2 # NOTE: Quite a few patches and suggestions come from other sources, to whom
3 # I'm greatly indebted, even if no names are mentioned.
5 # Thanks to the Coombs Computing Unit at the ANU for their continued support
6 # in providing a very available location for the IP Filter home page and
9 # Thanks to Hewlett Packard for making it possible to port IP Filter to
12 # Thanks to Tel.Net Media for supplying me with equipment to ensure that
13 # IP Filter continues to work on Solaris/sparc64.
15 # Thanks to BSDI for providing object files for BSD/OS 3.1 and the means
16 # to further support development of IP Filter under BSDI.
18 # Thanks to Craig Bishop of connect.com.au and Sun Microsystems for the
19 # loan of a machine to work on a Solaris 2.x port of this software.
21 # Thanks also to all those who have contributed patches and other code,
22 # and especially those who have found the time to port IP Filter to new
25 3.4.28 6/6/2002 - Released
27 Fix for H.323 proxy to work on little endian boxes
29 IRIX: Update installation documentation
32 allow use of groups > 65535
34 create a new packet info summary for packets going through ipfr_fastroute()
35 so that where details are different (RST/ICMP errors), the packet now gets
38 fix the FTP proxy so that checks for TCP sequence numbers outside the
39 normal offset due to data changes use absolute numbers
41 make it possible to remove rules in ipftest
43 Update installing onto OpenBSD and split into two directories:
44 OpenBSD-2 and OpenBSD-3
46 fix error in printout out the protocol in NAT rules
48 always unlock ipfilter if locking fails half way through in ipfs
50 fix problems with TCP window scaling
52 update of man pages for ipnat(4) and ipftest(1)
54 3.4.27 28/04/2002 - Released
56 fix calculation of 2's complmenent 16 bit checksum for user space
58 add mbuflen() to usespace compiles.
60 add more #ifdef complexity for platform portability
64 3.4.26 25/04/2002 - Released
66 fix parsing and printing of NAT rules with regression tests.
68 add code to adjust TCP checksums inside ICMP errors where present and as
71 fix documentation problems in instal documents
73 fix locking problem with auth code on Solaris
75 fix use of version macros for FreeBSD and make the use of __FreeBSD_version
76 override previous hacks except when not present
78 fix the macros defined for SIOCAUTHR and SIOCAUTHW
80 fix the H.323 proxy so it no longer panics (multiple issues: re-entry into
81 nat_ioctl with lock held on Solaris, trying to copy data from kernel space
82 with copyin, unaligned access to get 32bit & 16bit numbers)
84 use the ip_ttl ndd parameter on Solaris to fill in ip_ttl for packets
87 fix comparing state information to delete state table entries
89 flag packets as being "bad state" if they're outside the window and prevent
90 them from being able to cause new state to be created - except for SYN packets
92 be stricter about what packets match a TCP state table entry if its creation
93 was triggered by a SYN packet.
95 add patches to handle TCP window scaling
97 don't update TCP state table entries if the packet is not considered to be
98 part of the connection
100 ipfs wasn't allowing -i command line option in getopt
102 IRIX: fix kvm interface, fix compile warnings, compile the kernel with -O2
103 regardless of user compile, fix the getkflags script to prune down the
104 output more so it is acceptable
106 change building in Makefiles to create links to the application in $(TOP)
107 at the end of "build" rather than when each is created.
109 update BSD/kupgrade for FreeBSD
111 l4check wasn't properly closing things when a connection fails
113 man page updates for ipmon(8) and ipnat(5)
115 more regression tests added.
117 3.4.25 13/03/2002 - Released
119 retain rule # in state information
121 log the direction of a packet so ipmon gets it right rather than incorrectly
122 deriving it from the rule flags
124 add #ifdef for IPFILTER_LOGSIZE (put options IPFILTER_LOGSIZE=16384 in BSD
125 kernel config files to increase that buffer size)
127 recognise return-* rules differently to block in ipftest
129 fix bug in ipmon output for solaris
131 add regression testing for skip rules, logging and using head/group
133 fix output of ipmon: was displaying large unsigned ints rather than -1
134 when no rules matched.
136 make logging code compile into ipftest and add -l command line option to
137 dump binary log file (read with ipmon -f) when it finishes.
139 protect rule # and group # from interference when checking accounting rules
141 add regression testing for log output (text) from ipmon.
143 document -b command line option for ipmon
145 fix double-quick in Solaris startup script
147 3.4.24 01/03/2002 - Released
149 fix how files are installed on SunOS5
151 fix some minor problems in SunOS5 ipfboot script
153 by default, compile all OpenBSD tools in 3.0 for IPv6
155 fix NULL-pointer dereference in NAT code
157 make a better attempt at replacing the appropriate binaries on BSD systems
159 always print IPv6 icmp-types as a number
161 impose some rules about what "skip" can be used with
163 fix parsing problems with "keep state" and "keep state-age"
165 Try to read as much data as is in the log device in ipmon
167 remove some redundant checks when searching for rdr/nat rules
169 fix bug in handling of ACCT with FTP proxy
171 increase array size for interface names, using LIFNAMSIZ
173 include H.323 proxy from QNX
175 3.4.23 16/01/2002 - Released
177 Include patches to install IPFilter into OpenBSD 3.0, both for just kernel
178 compiles and complete system builds.
180 Fix bug in automatic flushing of state table which would cause it to hang
181 in an infinite loop bug introduced in 3.4.20.
183 Modify the sample proxy (samples/proxy.c) so that it ads a NAT mapping for
184 the outgoing connection to make it look like it comes from the real source.
186 Only support ICMPv6 with IPv6.
188 Move ipnat.1 to ipnat.8
190 Enhance ipmon to print textual ICMP[v6] types and subtypes where possible.
192 Make it possible to do IPv6 regression testing with ipftest.
194 Use kvm library for kmem access, rather than trying to do it manually with
197 Fix diffs for ip_input.c on BSDOS so it doesn't crash with fastroute.
199 Remove Berkeley advertising licence clause. Reference:
200 ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change
202 Add more regression tests: ICMPv6 neighbour discovery, ICMP time exceeded
203 and fragmentation required.
205 Fix ipfboot script on Solaris to deal with no nameservers or no route to
206 them in a clean manner.
208 Support per-rule set timeouts for non-TCP NAT and state
212 Add ICMPv6 stateful checking, including handling multicast destination
213 addresses for neighbour discovery.
215 Fix problems with internals of ICMP messages for MTU discovery and
216 unreachables not being correctly adjust on little endian boxes.
218 Add "in-via" and "out-via" to filtering rules grammar. It is now possible
219 to bind a rule to both incoming and outgoing interfaces, in both forward
220 and reverse directions (4 directions in total). allows for asymetric flows
223 Fix ipfstat and ipnat for working on crash dumps.
225 Don't let USE_INET6 stay defined for SunOS4
227 Count things we see for each interface on solaris.
229 Include <netinet/icmp6.h> when compiling with USE_INET6 defined and
230 also include a whole bunch of #define's to make sure the symbols expected
233 Fix up fastroute on BSD systems.
235 Make fastrouting work for IPv6 just a bit better. doesn't split up big
236 packets into fragments like the IPv4 one does. You can now do a
237 "to <if>:<ipv6_addr>"
239 Remove some of the differences between user-space and kernel-space code
240 that is internal to ipfilter.
242 Call ipfr_slowtimer() after each packet is processed in ipftest to artificially
243 create the illusion of passing time and include the expire functions in the
244 code compiled for user-space.
246 Fix issues with the IPSec proxy not working or leading to a system crash.
248 Junk all processing of SPIs and special handling for ESP.
250 Add "no-match" as a filter rule action (resets _LAST_ match)
252 Add hack to workaround problems with Cassini interface cards on
255 Add some protocols to etc/protocols
257 3.4.22 03/12/2001 - Released
259 various openbsd changes
261 sorting based on IP numbers for ipfstat top output
263 fix various IPv6 code & compile problems
265 modify ip_fil.c to be more netbsd friendly
267 fix fastroute bug where it modified a packet post-sending
269 fix get_unit() - don't understand why it was broken.
271 add FI_IGNOREPKT and don't count so marked packets when doing stats or
274 extend the interface name saved to log output
276 make proxies capable of extending the matching done on a packet with a
277 particular nat session
279 change interfaces inside NAT & state code to accomodate redesign to allow
282 fix bug when free'ing loaded rules that results in a memory leak
283 (only an issue with "ipf -rf -", not flush)
285 make ipftest capable of loading > 1 file or rules, making it now possible
286 to load both NAT & filter rules
288 fix hex input for ipftest to allow interface name & direction to work
290 show ipsec proxy details in ipnat output
292 if OPT_HEX is set in opts, print a packet out as hex
294 don't modify b_next or preseve it or preserve b_prev for solaris
296 fix up kinstall scripts to install all the files everywhere they need to
298 fix overflowing of bits in ip_off inside iptest
300 make userauth and proxy in samples directory compile
302 fix minimum size when doing a pullup for ESP & ICMPv6
304 3.4.21 24/10/2001 - Released
308 make state work for non-tcp/udp/icmp in a very simple way
310 include diffs for ipv6 firewall on openbsd-2.9
312 add compatibility filter wrapper for NetBSD-current
314 fix command line option problems with ipfs
316 if we fill the state table and a automated flush doesn't purge any
317 expiring entries, remove all entries idle for more than half a day
319 fix bug with sending resets/icmp errors where the pointer to the data
320 section of the packet was not being set (BSD only)
322 split out validating ftp commands and responses into different halves,
323 one for each of server & client.
325 do not compile in STATETOP support for specific architectures
327 fix INSTALL.FreeBSD to no longer provide directions and properly direct
328 people to the right file for the right version of FreeBSD.
330 3.4.20 24/07/2001 - Released
332 adjust NAT hashing to give a better spread across the table
334 show icmp code/type names in output, where known
336 fix bug in altering cached interface names in state when resync'ing
338 fix bug in real audio proxy that caused crashs
340 fix compiling using sunos4 cc
342 patch from casper to address weird exit problem for ipstat in top mode
344 patch from Greg Woods to produce names for icmp types/unreach codes,
347 fix bug where ipfr_fastroute() would use a mblk and it would also get
350 don't match fragments which would cause 64k length to be exceeded
352 ftp proxy fix for port numbers being setup for pasv ftp with state/nat
354 change hashing for NAT to include both IP#'s and ports.
356 Solaris fixes for IPv6
358 fix compiling iplang bits, under Solaris, for ipsend
360 3.4.19 29/06/2001 - Released
362 fix to support suspend/resume on solaris8 as well as ipv6
364 include group/group-head in match of filter rules
366 fix endian problem reading snoop files
368 make all licence comments point to the one place
370 fix ftp proxy to only advance state if a reply is received in response to
373 3.4.18 05/06/2001 - Released
375 fix up parsing of "from ! host" where '!' is separate
377 disable hardware checksums for NetBSD
379 put ipftest temporary files in . rather than /tmp
381 modify ftp proxy to be more intelligent about moving between states
382 and recognise new authentication commands
384 allow state/nat table sizes to be externally influenced
386 print out host mapping table for NAT with ipnat -l
388 fix handling of hardware checksum'ing on Solaris
390 fixup makefiles for Solaris
392 update regression tests
394 fix surrender of SPL's for failure cases
396 include patches for OpenBSD's new timeout mechanism
398 default ipl_unreach to ICMP_UNREACH_FILTER_PROHIB if defined, else make it
401 fix up handling of packets matching auth rules and interaction with state
403 add -q command line option to ipfstat on Solaris to list bound interfaces
405 add command line option to ipfstat/ipnat to select different core image
407 don't use ncurses on Solaris for STATETOP
409 fix includes to get FreeBSD version
411 do not byte swap ip_id
413 fix handling success for packets matching the auth rule
415 don't double-count short packets
417 add ICMP router discovery message size recognition
419 fix packet length calculation for IPv6
421 set CPUDIR when for install-sunos5 make target
423 SUNWspro -xF causes Solaris 2.5.1 kernel to crash
425 3.4.17 06/04/2001 - Released
427 fix fragment#0 handling bug where they could get in via cache information
428 created by state table entries
430 use ire_walk to look for ire cache entries with link layer headers cached
432 deal with bad SPL assumptions for log reading on BSD
434 fix ftp proxy to allow logins with passwords
436 some auth rule patches, fixing byte endian problems and returning as an error
438 support LOG_SECURITY, where available, in ipmon
440 don't return an error for packets which match auth rules
442 introduce fr_icmpacktimeout to timeout entries once an ICMP reply has
443 been seen separately to when created
445 3.4.16 15/01/2001 - Released
447 fix race condition in flushing of state entries that are timing out
451 log all NAT entries created, not just those via rules
453 3.4.15 17/12/2000 - Released
455 add minimum ttl filtering (to be replaced later by return-icmp-as-dest
456 for all ICMP packets matching state entries).
458 fix NAT'ing of fragments
460 fix sanity checks for ICMPV6
462 fix up compiling on IRIX 6.2 with IDF/IDL installed
464 3.4.14 02/11/2000 - Released
466 cause flushing NAT table to generate log records the same as state flush
469 fix ftp proxy port/pasv
471 fix problem where nat_{in,out}lookup() would release a write lock when it
474 add check for ipf6.conf in Solaris ipfboot
476 3.4.13 28/10/2000 - Released
478 fix introduced bug with ICMP packets being rejected when valid
480 fix bug with proxy's that don't set fin_dlen correctly when calling
483 3.4.12 26/10/2000 - Released
485 fix installing into FreeBSD-4.1
487 fix FTP proxy bug where it'd hang and make NAT slightly more efficient
489 fix general compiling errors/warnings on various platforms
491 don't access ICMP data fields that aren't there
493 3.4.11 09/10/2000 - Released
495 return NULL for IPv6 access control lists if it is disabled rather than
498 fix for getting protocol & packet length for IPv6 packets for pullup.
500 update plog script from version 0.8 to version 0.10
502 patch from Frank Volf adding fix_datacksum() to NAT code, enhancing the
503 capabilities for "fixing" checksums.
505 3.4.10 03/09/2000 - Released
507 merge patch from Frank Volf for ICMP nat handling of TCP/UDP data `errors'
509 getline() adjusts linenum now
511 add tcphalfclosed timeout
513 fill in icmp_nextmtu field if it is defined on the platform
515 RST generation fix from guido
517 force 32bit compile for gcc on solaris if it can't generate 64bit code
519 encase logging when fr_chksrc == 2 in #ifdef IPFILTER_LOG
521 fix up line wrap problems in plog script
523 fix ICMP packet handling to not drop valid ICMP errors
525 freebsd 5.0 compat changes
527 3.4.9 08/08/2000 - Released
529 implement new aging mechanism in fr_tcp_age()
531 fix icmp state checking bug
533 revamp buildsunos script and build both sparcv7/sparcv9 for Solaris
534 if on an Ultra with a 64bit system & compiler (Caseper Dik)
536 open ipfilter device read only if we know we can
538 print out better information for ICMP packets in ipmon
540 move checking for source spoofed packets to a point where we can generate
543 return EFAULT from ircopyptr/iwcopyptr
545 don't do ioctl(SIOCGETFS) for auth stats
547 fix up freeing mbufs for post-4.3BSD
549 fix returning of inc from ftp proxy
551 fix bugs with ipfs -R/-W (Caseper Dik)
553 3.4.8 19/07/2000 - Released
555 create fake opt_inet6.h for FreeBSD-4 compile as LKM
557 add #ifdef's for KLD_MODULE sanity
559 NAT fastroute'd packets which come out of return-*
561 fix upper/lower case crap in ftp proxy and get seq# checking fixed up.
563 3.4.7 08/07/2000 - Released
565 make "ipf -y" lookup NAT if's which are unknown
567 prepend line numbers to ioctl error messages in ipf/ipnat
569 don't apply patches to FreeBSD twice
571 allow for ip_len to be on an unaligned boundary early on in fr_precheck
573 fix printing of icmp code when it is 0
575 correct printing of port numbers in map rules with from/to
577 don't allow fr_func to be called at securelevel > 0 or rules to be added
578 if securelevel > 0 if they have a non-zero fr_func.
580 3.4.6 11/06/2000 - Released
582 add extra regression tests for new nat functionality
584 place restrictions on using '!' in map/rdr rules
586 fix up solaris compile problems
588 3.4.5 10/06/2000 - Released
590 mention -sl in ipfstat.8
592 fix/support '!' in from/to rules (rdr) for NAT
594 add from/to support to rdr NAT rules
596 don't send ICMP errors in response to ICMP errors
598 fix sunos5 compilation for "ipfstat-top" and cleanup ipfboot
600 input accounting list used for both outbound and inbound packets
602 3.4.4 23/05/2000 - Released
604 don't add TCP state if it is an RST packet and (attempt) to send out
605 RST/ICMP packets in a manner that bypasses IP Filter.
607 add patch to work with 4.0_STABLE delayed checksums
609 3.4.3 20/05/2000 - Released
613 don't truncate IPv6 packets on Solaris
615 fix keep state for ICMP ECHO
617 add some NAT stats and use def_nat_age rather than DEF_NAT_AGE
619 don't make ftp proxy drop packets
621 use MCLISREFERENCED() in tandem with M_EXT to check if IP fields need to be
624 fix up RST generation for non-Solaris
626 get "short" flag right for IPv6
628 3.4.2 - 10/5/2000 - Released
630 Fix bug in dealing with "hlen == 1 and opt > 1" - Itojun
632 ignore previous NAT mappings for 0/0 and 0/32 rules
634 bring in a completely new ftp proxy
636 allow NAT to cause packets to be dropped.
638 add NetBSD callout support for 1.4-current
640 3.4.1 - 30/4/2000 - Released
642 add ratoui() and fix parsing of group numbers to allow 0 - UINT_MAX
644 don't include opt_inet6.h for FreeBSD if KLD_MODULE is defined
646 Solaris must use copyin() for all types of ioctl() args
648 fix up screen/tty when leaving "top mode" of ipfstat
650 linked list for maptable not setup correctly in nat_hostmap()
652 check for maptable rather than nat_table[1] to see if malloc for maptable
653 succeeded in nat_init
655 fix handling of map NAT rules with "from/to" host specs
657 fix printout out of source address when using "from/to" with map rules
659 convert ip_len back to network byte order, not plen, for solaris as ip_len
660 may have been changed by NAT and plen won't reflect this
662 3.4 - 27/4/2000 - Released
664 source address spoofing can be turned on (fr_chksrc) without using
667 group numbers are now 32bits in size, up from 16bits
669 IPv6 filtering available
671 add frank volf's state-top patches
673 add load splitting and round-robin attribute to redirect rules
675 FreeBSD-4.0 support (including KLD)
677 add top-style operation mode for ipfstat (-t)
679 add save/restore of IP Filter state/NAT information (ipfs)
681 further ftp proxy security checks
683 support for adding and removing proxies at runtime
685 3.3.13 26/04/2000 - Released
687 Fix parsing of "range" with "portmap"
689 Relax checking of ftp replies, slightly.
691 Fix NAT timeouts for ICMP packets
693 SunOS4 patches for ICMP redirects from Jurgen Keil (jk@tools.de)
695 3.3.12 16/03/2000 - Released
697 tighten up ftp proxy behaviour. sigh. yuck. hate.
699 fix bug in range check for NAT where the last IP# was not used.
701 fix problem with icmp codes > 127 in filter rules caused bad things to
702 happen and in particular, where #18 caused the rule to be printed
705 fix bug with the spl level not being reset when returning EIO from
706 iplioctl due to ipfilter not being initialized yet.
708 3.3.11 04/03/2000 - Released
710 make "or-block" work with lines that start with "log"
712 fix up parsing and printing of rules with syslog levels in them
714 fix from Cy Schubert for calling of apr_fini only if non-null
717 3.3.10 24/02/2000 - Released
719 * fix back from guido for state tracking interfaces
721 * update for NetBSD pfil interface changes
723 * if attaching fails and we can abort, then cleanup when doing so.
726 * solaris.c (fr_precheck): After calling freemsg on mt, set it point to *mp.
727 * ipf.c (packetlogon): use flag to store the return value from get_flags.
728 * ipmon.c (init_tabs): General cleanup so we do not have to cast
729 an int s->s_port to u_int port and try to check if the u_int port
732 3.3.9 15/02/2000 - Released
734 fix scheduling of bad locking in fr_addstate() used when we attach onto
737 fix up ip_statesync() with storing interface names in ipstate_t
739 fix fr_running for LKM's - Eugene Polovnikov
741 junk using pullupmsg() for solaris - it's next to useless for what we
742 need to do here anyway - and implement what we require.
744 don't call fr_delstate() in fr_checkstate(), when compiled for a user
745 program, early but when we're finished with it (got fr & pass)
747 ipnat(5) fix from Guido
749 on solaris2, copy message and use that with filter if there is another
750 copy if it being used (db_ref > 1). bad for performance, but better
751 than causing a crash.
753 patch for solaris8-fcs compile from Casper Dik
755 3.3.8 01/02/2000 - Released
757 fix state handling of SYN packets.
759 add parsing recognition of extra icmp types/codes and fix handling of
760 icmp time stamps and mask requests - Frank volf
762 3.3.7 25/01/2000 - Released
764 sync on state information as well as NAT information when required
766 record nat protocol in all nat log records
768 don't reuse the IP# from an active NAT session if the IP# in the rule
769 has changed dynamically.
771 lookup the protocol for NAT log information in ipmon and pass that to
774 fix the bug with changing the outbound interface of a packet where it
775 would lead to a panic.
777 use fr_running instead of ipl_inited. (sysctl name change on freebsd)
779 return EIO if someone attempts an ioctl on state/nat if ipfilter is not
782 fix rule insertion bug
784 make state flushing clean anything that's not fully established (4/4)
786 call fr_state_flush() after we've released ipf_state so we don't generate
787 a recursive mutex acquisition panic
789 fix parsing of icmp code after return-icmp/return-icmp-as-dest and add
790 some patches to enhance parsing strength
792 3.3.6 28/12/1999 - Released
794 add in missing rwlock release in fr_checkicmpmatchingstate() and fix check
795 for ICMP_ECHO to only be for packet, not state entry which we don't have yet.
797 handle SIOCIPFFB in nat_ioctl() and fr_state_ioctl()
799 fix size of friostat for SunOS4
801 fix bug in running off the end of a buffer in real audio proxy
803 3.3.5 11/12/1999 - Released
805 fix parsing of "log level" and printing it back out too
807 <net/if_types.h> is only present on Solaris2.6/7/8
809 use send_icmp_err rather than icmp_error to send back a frag-needed error
812 do not use -b with add_drv on Solaris unless $BASEDIR is set.
814 fix problem where source address in icmp replies is reversed
816 fix yet another problem with real audio.
818 3.3.4 4/12/1999 - Released
820 fix up the real audio proxy to properly setup state information and NAT
821 entries, thanks to Laine Stump for testing/advice/fixes.
823 fix ipfr_fastroute to set dst->sin_addr (Sean Farley - appears to prevent
824 FreeBSD 3.3 from panic'ing) as this had been removed in prior hacks to this
827 fix kinstall for BSDI
829 support ICMP errors being allowed through for ICMP packets going out with
832 support hardware checksumming (gigabit ethernet cards) on Solaris thanks to
833 Tel.Net Media for providing hardware for testing.
835 patched from Frank Volf for ipmon (ICMP & fragmented packets) and allowing
836 ICMP responses to ICMP packets in the keep state table.
838 add in patches for hardware checksumming under solaris
840 Solaris install scripts now use $BASEDIR as appropriate.
844 fix "ipf -y" on solaris so that it rescans rules also for changes in
847 let ipmon become a daemon with -D if it is using syslog
849 fix parsing of return-icmp-as-dest(foo)
851 add reference to ipfstat -g to ipfstat.8
853 ipf_mutex needs to be declared for irix in ip_fil.c
855 3.3.3 22/10/1999 - Released
857 add -g command line option to ipfstat to show groups still define.
859 fix problem with fragment table not recording rule pointer when called
860 from state functions (fin_fr not set).
862 fixup fastroute problems with keep state rules.
864 load rules into inactive set first, so we don't disable things like NIS
865 lookups half way through processing - found by Kevin Littlejohn
867 fix handling of unaligned ip pointer for solaris
869 patch for fr_newauth from Rudi Sluijtman
871 fixed htons() bug in fr_tcpsum() where ip_p wasn't cast to u_short
873 3.3.2 23/09/1999 - Released
875 patches from Scott Presnell to fix rcmd proxy
877 patches from Greg to fix Solaris detachment of interfaces
879 add openbsd compatibility fixes
881 fix free'ing already freed memory in ipfr_slowtimer()
883 fix for deferencing invalid memory in cleaning up after a device disappears
885 3.3.1 14/8/1999 - Released
887 remove include file sys/user.h for irix
889 prevent people from running buildsunos directly
891 fix up some problems with the saving of rule pointers so that NAT saves
892 that information in case it should need to call fr_addstate() from a proxy.
894 fix up scanning for the end of FTP messages
896 don't remove /etc/opt/ipf in postremove
898 attempt to prevent people running buildsolaris script without doing a
901 fix timeout losing on freebsd3
903 3.3 7/8/1999 - Released
905 NAT: information (rules, mappings) are stored in hash tables; setup some
906 basic NAT regression testing.
908 display version name of installed kernel code when initializing.
910 add -V command line option to ipf, showing version (program and kernel
911 module) as well as the run-status of the kernel code.
913 fix problem with "log" rules actually affecting result of filtering.
915 automatically use SUNWspro if available and on a 64bit Solaris system for
918 add kernel proxies for rcmd(3) and RealAudio (PNA)
920 use timeout/untimeout on SunOS4/BSD platforms too rather than hijacking
923 fix IP headers generated through parsing of text information
925 fix NAT rules to be in the correct order again.
927 make keep-state work with to/fastroute keywords and enforce usage of those
930 update keep-state code with new algorithm from Guido
932 add FreeBSD-3 support
934 add return-icmp-as-dest option to retrun an ICMP packet using the original
935 destination as the source rather than a local IP address
937 add "level [facility.]<priority>" option to filter language
939 add changes from Guido to state code.
941 add code to return EPERM if the device is opened for writing and we're
942 in securelevel 2 or greater.
944 authentication code patches from Guido
948 fix ipmon rule printing of interfaces and add IN/OUT to the end of ipmon
951 fix bimap rules with hash tables
953 update addresses used in NAT mappings for 0/32 rules for any protocol but TCP
954 if it changes on the interface - check every ip_natexpire()
956 add redirect regression test
958 count buckets used in the state hash table.
960 fix sending of RST's with return-rst to use the ack number provided in
961 the packet being replied to in addition to the sequence number.
963 fix to compile as a 64bit application on solaris7-64bit
965 add NAT IP mapping to ranges of IP addresses that aren't CIDR specified
967 fix calculation of in_space parameter for NAT
969 fix `wrapping' when incrementing the next ip address for use in NAT
971 fix free'ing of kernel memory in ip_natunload on solaris
973 fix -l/-U command line options from interfering with each other
975 fix fastroute under solaris2 and cleanup compilation for solaris7
977 add install scripts and compile cleanly on BSD/OS 4.0
979 safely open files in /tmp for writing device output when testing.
981 fix uninitialized pointer bug in NAT
983 fix SIOCZRLST (zero list rule stats) bug with groups
985 change some usage of u_short to u_int in function calling
987 fix compilation for Solaris7 (SUNWspro)
989 change solaris makefiles to build for either sparc or i386 rather than
990 per-cpu (sun4u, etc).
994 add patches from George Michaelson for FreeBSD 3.0
996 add patch from Guido to provide ICMP checking for known state in the same
997 manner as is done for NAT.
999 enable FTP PASV proxying and enable wildcarding in NAT/state code for ports
1000 for better PORT/PASV support with FTP.
1002 bring into main tree static nat features: map-block and "auto" portmapping.
1004 add in source host filtering for redirects (alan jones)
1006 3.2.10 22/11/98 - Released
1008 3.2.10beta9 17/11/98 - Released
1010 fix fr_tcpsum problems in handling mbufs with an odd number of bytes
1011 and/or split across an mbuf boundary
1013 fix NAT list entry comparisons and allow multiple entries for the same
1014 proxy (but on different ports).
1016 don't create duplicate NAT entries for repeated PORT commands.
1018 3.2.10beta8 14/11/98 - Released
1020 always exit an rwlock before expecting to enter it again on solaris
1022 fix loop in nat_new for pre-existing nat
1024 don't setup state for an ftp connection if creating nat fails.
1026 3.2.10beta7 05/11/98 - Released
1028 set fake window in ipft_tx.c to ensure code passes tests.
1030 cleaned up/enhanced ipnat -l/ipnat -lv output
1032 fixed NAT handling of non-TCP/UDP packets, esp. for ICMP errors returned.
1034 Solaris recusive mutex on icmp-error/tcp-reset - requires rwlock's rather
1037 3.2.10beta6 03/11/98 - Released
1039 fix mixed use of krwlock_t and kmutex_t on Solaris2
1041 fix FTP proxy back up, splitting pasv code out of port code.
1043 3.2.10beta5 02/11/98 - Released
1045 fixed port translation in ICMP reply handling
1047 3.2.10beta4 01/11/98 - Released
1049 increase useful statistic collection on solaris
1051 filter DL_UNITDATA_REQ as well as DL_UNITDATA_IND on solaris
1053 disable PASV reply translation for now
1055 fail with an error if we try to load a NAT rule with a non-existant
1058 fix portmap usage with 0/0 and 0/32 map rules
1060 remove ap_unload/ap_expire - automatically done when NAT is cleaned up
1062 print "STATE:CLOSED" from ipmon if the connection progresses past established
1063 rather than "STATE:EXPIRED"
1065 3.2.10beta3 26/10/98 - Released
1067 fixed traceroute/nat problem
1069 rewrote nat/proxy interface
1071 ipnat now lists associated proxy sessions for each NAT where applicable
1073 3.2.10beta2 13/10/98 - Released
1075 use KRWLOCK_T in place of krwlock_t for solaris as well as irix
1077 disable use of read-write lock acquisition by default
1079 add in mb_t for linux, non-kernel
1081 some changes to progress compilation on linux with glibc
1083 change PASV as well as PORT when passed through kernel ftp proxy.
1085 don't allow window to become 0 in tcp state code
1087 make ipmon compile cleaner
1091 3.2.10beta 11/09/98 - Released
1093 stop fr_tcpsum() thinking it has run out of data when it hasn't.
1095 stop solaris panics due to fin_dp being something wild.
1097 revisit usage of ATOMIC_*()
1099 log closing state of TCP connection in "keep state"
1101 fix fake-arp table code for ipsend.
1103 ipmon now writes pid to a file.
1105 fix "ipmon -a" to actually activate all logging devices.
1107 add patches for BSDOS4.
1109 perl scripts for log analysis donated.
1111 3.2.9 22/06/98 - Released
1113 fix byte order for ICMP packets generated on Solaris
1115 fix some locking problems.
1117 fix malloc bug in NAT (introduced in 3.2.8).
1119 patch from guido for state connections that get fragmented
1121 3.2.8 08/06/98 - Released
1123 use readers/writers locks in Solaris2 in place of some mutexes.
1125 Solaris2 installation enhancements - Martin Forssen (maf@carlstedt.se)
1127 3.2.7 24/05/98 - Released
1129 u_long -> u_32_t conversions
1131 patches from Bernd Ernesti for NetBSD
1133 fixup ipmon to actually handle HUP's.
1135 Linux fixes from Michael H. Warfield (mhw@wittsend.com)
1137 update for keep state patch (not security related) - Guido
1139 dumphex() uses stdout rather than log
1141 3.2.6 18/05/98 - Released
1143 fix potential security loop hole in keep state code.
1147 3.2.5 09/05/98 - Released
1149 BSD/OS 3.1 .o files added for the kernel.
1151 fix sequence # skew vs window size check.
1153 fix minimum ICMP header size check.
1155 remove references to Cybersource.
1157 fix my email address.
1159 remove ntohl in ipnat - Thomas Tornblom
1161 3.2.4 09/04/98 - Released
1163 add script to make devices for /dev on BSD boxes
1165 fixup building into the kernel for FreeBSD 2.2.5
1167 add -D command line option to ipmon to make it a daemon and SIGHUP causes
1168 it to close and reopen the logfile
1170 fixup make clean and make package for SunOS5 - Marc Boucher
1172 postinstall keeps adding "minor=ipf ipl" - George Ross <gdmr@dcs.ed.ac.uk>
1174 protected by IP Filter gif - Sergey Solyanik <solik@atom.ru>
1176 3.2.3 10/11/97 - Released
1178 fix some iplang bugs
1180 fix tcp checksum data overrun, sgi #define changes,
1181 avoid infinite loop when nat'ing to single IP# - Marc Boucher
1183 fixup DEVFS usage for FreeBSD
1185 fix sunos5 "make clean" cleaning up too much
1187 3.2.2 28/11/97 - Released
1189 change packet matching to return actual error, if bad packet, to facilitate
1192 allow ip:netmask in grammar too now - Guido
1194 assume IRIX has u_int32_t in sys/types.h (needed for R10000)
1196 rewrite parts of command line options for ipmon
1198 fix TCP urgent packet & offset testing and add LAND attack test for iptest
1200 fix grammar error in yacc grammar for iplang
1202 redirect (rdr) destination port bytes-wapped when it shouldn't be.
1204 general: fr_check now returns error code, such as EHOSTUNREACH or
1205 ECONNRESET (attempt to make ECONNRESET work for locally outbound
1208 linux: enable return-rst, need to filter tcp retransmits which are sent
1209 separately from normal packets
1211 memory leak plugged in ip_proxy.c
1213 BSDI compatibility patches from Guido
1215 tcp checksum fix - Marc Boucher
1217 recursive mutex and ioctl param fix - Marc Boucher
1219 3.2.1 12/11/97 - Released
1223 port to Linux 2.0.31
1225 patches to make "map a/m -> 0/0" work with ftp proxying properly - Marc Boucher
1227 add "ipf -F s" and "ipf -F S" to flush state table entries.
1229 announce if logging is on or off when ip filter initializes.
1231 "ipf -F a" doesn't flush groups properly for Solaris.
1233 3.2 30/10/97 - Released
1235 ipnat doesn't successfully remove proxy mappings with "-rf" -
1238 use K&R C function style for solaris kernel code
1240 use m_adj() to decrease packet size in ftp proxy
1242 use mbufchainlen rather than msgdsize,
1243 IRIX update - Marc Boucher
1245 fix NetBSD modunload bug (pfil_add_hook done twice)
1247 patches for OpenBSD 2.1 - Craig Bevins <craigb@bitcom.net.au>
1249 3.2beta10 24/10/97 - Released
1251 fix fragment table entries allocated for NAT.
1253 fix tcp checksum calculations over mbuf/mblk boundaries
1255 fix panic for blen < 0 in ftp kernel proxy - marc boucher
1257 fix flushing of rules which have been grouped.
1259 3.2beta9 20/10/97 - Released
1261 some nit picking on solaris2 with SUNWspro - Michael Lyle <mrl@rpnet.net>
1263 ftp kernel proxy patches from Marc Boucher
1265 3.2beta8 13/10/97 - Released
1267 add support for passing ICMP errors back through NAT.
1269 IRIX port update - Marc Boucher
1271 calculate correct MIN size of packet to log for UDP - Marc Boucher
1273 need htons(ETHERTYPE_x) on little endian BSD boxes - Dave Huang
1275 copyright header fixups
1277 3.2beta7 23/09/97 - Released
1279 fickup problems introduced by prior merges & changes.
1281 3.2beta6 23/09/97 - Released
1283 patch for spin-reading race condition - Marc Boucher.
1285 IRIX port by Marc Boucher.
1287 compatibility updates for Linux to ipsend
1289 3.2beta5 13/09/97 - Released
1291 patches from Bernd Ernesti for NetBSD integration (mostly prototyping and
1292 compiler warning things)
1294 ipf -y will resync IP#'s allocated with 0/32 in NAT to match interface if it
1297 update manual pages and other documentation updates.
1299 3.2beta4 27/8/97 - Released
1301 enable setting IP and TCP options for iplang/
1303 Solaris2 patches from Marc Boucher.
1305 add groups for filter rules.
1307 3.2beta3 21/8/97 - Released
1309 patches for Solaris2 (interface panic solution ?): fix FIONREAD and
1310 replacing q_qinfo points - Marc Boucher <marc@CAM.ORG>
1312 change ipsend/* and ipsd/* copyright notices to be the same as ip filter's
1314 patch for SYN-ACK skew testing fix from Eric V. Smith <EricSmith@windsor.com>
1316 3.2beta2 6/8/97 - Released
1318 make it load on Solaris 2.3
1320 rewrote logging to remove solaris errors, introduced checking to see if the
1321 same packet is logged successively.
1323 fix filter cache to work when there are no rules loaded.
1325 add "raw" option to ipresend to send entire ethernet frames.
1327 nat list corruption bug - NetBSD - Klaus Klein
1329 3.2beta1 5/7/97 - Released
1331 patches from Jason Thorpe fixing: UNSIGNED_CHAR lossage, off_t being 64bits
1332 lossage, and other NetBSD bits.
1336 fixup fwtk patches and add protocol field for SIOCGNATL.
1338 rdr bugs reported by Alexander Romanyu (alexr@aix.krid.crimea.ua), with
1340 * rdr matched all packets of a given protocol (ignored ports).
1341 * severe bug in nat_delete which caused system crash/freeze.
1343 change Makefile so that CC isn't passed on for FreeBSD/NetBSD (will use
1344 the default CC - cc, not gcc)
1346 3.2alpha9 16/6/97 - Released
1348 added "skip" keyword.
1350 implement preauthentication of packets, as outlined by Guido.
1352 Make it compile as cleanly as possible with -Wall & general code cleanup
1354 getopt returns int, not char. Bernd Ernesti
1356 3.2alpha8 13/6/97 - Released
1358 code added to support "auth" rules which require a user program to allow them
1359 through. First revision and much of the code came from Guido.
1361 hex output from ipmon doesn't goto syslog when recovering from out of sync
1362 error. Luke Mewburn (lukem@connect.com.au)
1364 fix solaris2.6 lookup of destination ire's.
1366 ipnat doesn't throw away unused bits (after masking), causing it to
1367 behave incorrectly. Carson Gaspar
1369 NAT code doesn't include inteface name when matching - Alexey Mavrin
1372 replace old SunOS tcpip.h with new tcpip.h (from 4.4BSD) - Jason Thorpe.
1374 update install procedures to include ip_proxy.c
1376 mask out unused bits in NAT/RDR rules.
1378 use a generic type (u_32_t) for 32bit variables, rather than rely on
1379 u_long being such - Jason Thorpe.
1381 create a local "netinet" directory and include from ~netinet/*" rather than
1382 just "*" to make keeping the code working on ports easier.
1384 add an m_copydata and m_copyback for SunOS4 (based on 4.4BSD-Lite versions)
1386 documentation updates.
1388 NetBSD update from Jason Thorpe <thorpej@netbsd.org>
1390 allow RST's through with a matching SEQ # and 0 ACK. Guido Van Rooij
1392 ipmon uses excessive amounts of CPU on Solaris2 - Reinhard Bertram
1393 <Reinhard.Bertram@KOM.th-darmstadt.de>
1395 3.2alpha7 25/5/97 - Released
1397 add strlen for pre-2.2 kernels - Doug Kite <dkite@websgi.icomnet.com>
1399 setup bits and pieces for compiling into a FreeBSD-2.2 kernel.
1401 split up "bsd" targets. Now a separate netbsd/freebsd/bsd target.
1402 mln_ipl.c has been split up into itself and mlf_ipl.c (for freebsd).
1404 fix (negative) host matching in filtering.
1406 add sysctl interface for some variables when compiled into FreeBSD-2.2 kernels
1409 make all the candidates for kernel compiling include "netinet/..." and build
1410 a subdirectory "netinet" when compiling and symlink all .h files into this.
1412 add install make target to Makefile.ipsend
1414 3.2alpha6 8/5/97 - Released
1416 Add "!" (not) to hostname/ip matching.
1418 Automatically add packet info to the fragment cache if it is a fragment
1419 and we're translating addreses for.
1421 Automatically add packet info to the fragment cache if it is a fragment
1422 and we're "keeping state" for the packet.
1424 Solaris2 patches - Anthony Baxter (arb@connect.com.au)
1426 change install procedure for FreeBSD 2.2 to allow building to a kernel
1427 which is different to the running kernel.
1429 add FIONREAD for Solaris2!
1431 when expiring NAT table entries, if we would set a time to fr_tcpclosed
1432 (which is 1), make it fr_tcplaskack(20) so that the state tables have a
1437 add proxying skeleton support and sample ftp transparent proxy code.
1439 add printfs at startup to tell user what is happening.
1441 add packets & bytes for EXPIRE NAT log records.
1443 fix the "install-bsd" target in the root Makefile. Chris Williams
1446 Fixes for FreeBSD 2.2 (and later revs) to prevent panics. Julian Assange.
1448 3.2alpha4 2/4/97 - Released
1450 Some compiler warnings cleaned up.
1452 FreeBSD-2.2 patches for LKM completed.
1454 3.2alpha3 31/3/97 - Released
1456 ipmon changes: -N for reading NAT logfile, -S for reading state logfile.
1457 -a for reading all. -n now toggles hostname resolution.
1459 Add logging of new state entries and expiration of old state entries.
1460 count log successes and failures.
1462 Add logging of new NAT entries and expiration of old NAT entries.
1463 count log successes and failures.
1465 Use u_quad_t for records of bytes & packets where kept
1466 (IP Accounting: fr_hits, fr_bytes; IP state: is_pkts, is_bytes).
1468 Fixup use of CPU and DCPU in Makefiles.
1470 Fix broken 0/32 NAT mapping. Carl Makin <cmakin@nla.gov.au>
1474 Implement mapping to 0/32 as being an alias for automatically using the
1475 interface's first IP address.
1477 Implement separate minor devices for both NAT and IP state code.
1479 Fully prototype all functions.
1481 Fix Makefile problem due to attempt to fix Sun compiling problems.
1483 3.1.10 23/3/97 - Released
1485 ipfstat -a requires a -i or -o command line option too. Print an error
1486 when not present rather than attempt to do something.
1488 patch updates for SunOS4 for kernel compiling.
1489 patch for ipmon -s (flush's syslog file which isn't good). Andrew J. Schorr
1490 <schorr@ead.dsa.com>
1492 too many people hit their heads hard when compiling code into the kernel
1493 that doesn't let any packets through. (fil.c - IPF_NOMATCH)
1495 icmp-type parsing doesn't return any errors when it isn't constructed
1496 correctly. Neil Readwin
1498 Using "-conf" with modload on SunOS4 doesn't work.
1499 Timothy Demarest <demarest@arraycomm.com>
1501 Need to define ARCH in makefile for SunOS4 building. "make sunos4"
1502 in INSTALL.SunOS is incorrect. James R Grinter <jrg@blodwen.demon.co.uk>
1503 [all SunOS targets now run buildsunos]
1505 NAT lookups are still incorrect, matching non-TCP/UDP with TCP/UDP
1506 information. ArkanoiD <ark@paranoid.convey.ru>
1508 Need to check for __FreeBSD_version being 199511 rather than 199607
1509 in mln_ipl.c. Eric Feillant <Eric.Feillant@EUnet.fr>
1511 3.1.9 8/3/97 - Released
1513 fixed incorrect lookup of active NAT entries.
1515 patch for ip_deq() wrong for pre 2.1.6 FreeBSD.
1516 fyeung@fyeung8.netific.com (Francis Yeung)
1518 check for out with return-rst/return-icmp at wrong place - Erkki Ritoniemi
1521 text_readip returns the interface pointer pointing to text on stack -
1524 fix from Pradeep Krishnan for printout rules "with not opt sec".
1526 3.1.8 18/2/97 - Released
1528 Diffs for ip_output.c and ip_input.c updated to fix bug with fastroute and
1529 compiling warnings about reuse of m0.
1531 prevent use of return-rst and return-icmp with rules blocking packets going
1532 out, preventing panics in certain situations.
1534 loop forms in frag cache table - Yury Pshenychny <yura@rd.zgik.zaporizhzhe.ua>
1536 should use SPLNET/SPLX around expire routines in NAT/frag/state code.
1538 redeclared malloc in 44arp.c -
1540 3.1.7 8/2/97 - Released
1542 Macros used for ntohs/htons supplied with gcc don't always work very well
1543 when the assignment is the same variable being converted.
1545 Filter matching doesn't not match rule which checks tcp flags on packets
1546 which are fragments - David Wilson
1548 3.1.7beta 30/1/97 - Released
1550 Fix up NAT bugs introduced in last major change (now tested), including
1551 nat_delete(), nat_lookupredir(), checksum changes, etc.
1553 3.1.7alpha 30/1/97 - Released
1555 Many changes to NAT code, including contributions from Laurent Joncheray
1558 Use "NO_SLEEP" when allocating memory under SunOS.
1560 Make kernel printf's nicer for BSD/SunOS4
1562 Always do a checksum for packets being filtered going out and being
1563 processed by fastroute.
1565 Leave kernel to play with cdevsw on *BSD systems with LKM's.
1567 ipnat.1 man page fixes.
1569 3.1.6 21/1/97 - Released
1571 Allow NAT to work on BSD systems in conjunction with "pass .. to ifname"
1573 Memory leak introduced in 3.1.3 in NAT lists, clearing of NAT table tried
1574 to free memory twice.
1576 NAT recalculates IP header checksum based on difference between IP#'s and
1577 port numbers - should be just IP#'s (Solaris2 only)
1579 3.1.5 13/1/97 - Released
1581 fixed setting of NAT timeouts and use different timeouts for concurrent
1582 TCP sessions using the same IP# mapping (when port mapping isn't used)
1584 multiple loading/unloading of LKM's doesn't clean up cdevsw properly for
1587 3.1.4 10/1/97 - Released
1589 add command line options -C and -F to ipnat to flush NAT list and table
1591 ipnat -l loops on output - Neil Readwin (nreadwin@nysales.micrognosis.com)
1593 NetBSD/FreeBSD kernel malloc changes - Daniel Carosone
1595 3.1.3 10/1/97 - Released
1597 NAT chains not constructed correctly in hash tables - Antony Y.R Lu
1598 (antony@hawk.ee.ncku.edu.tw)
1600 Updated INSTALL.NetBSD, INSTALL.FreeBSD and INSTALL.Sol2
1602 man page update (ipf.5) from Daniel Carosone (dan@geek.com.au)
1604 ICMP header checksum update now included in NAT.
1606 Solaris2 needs to modify IP header checksums in ip_natin and ip_natout.
1608 3.1.2 4/12/96 - Released
1610 ipmon doesn't use syslog all the time when given -s option
1612 fixed mclput panic in ip_input.c and replace ntohs() with NTOHS() macro
1614 check the results of hostname resolution in ipnat
1616 "make *install" fixed for subdirectories.
1618 problems with "ARCH:=" and gnu make resolved
1620 parser reports an error for lines with whitespaces only rather than skipping
1621 them. D.Carosone@abm.com.au (Daniel Carosone)
1623 patches for integration into NetBSD-current (post 1.2).
1625 add an option to allow non-IP packets going up/down the stream on Solaris2
1626 to be dropped. John Bass.
1628 3.1.2beta 21/11/96 - Released
1630 make ipsend compile on Linux 2.0.24
1632 changes to TCP kept state algorithm, making it watch state on TCP
1633 connections in both directions. Also use the same algorithm for NAT TCP.
1635 -Wall cleanup - Bernd Ernesti
1637 added "or-block" for "pass .. log or-block" after a suggestion from
1638 David Oppenheim (davido@optimation.com.au)
1640 added subdirectories for building IP Filter in SunOS5/BSD for different
1643 Solaris2 fixes to logging and pre-filtering packet processing - 3.1.1p2
1645 mbuf logging not using mtod(), remove iplbusy - 3.1.1p1 1/11/96
1647 3.1.1 28/10/96 - Released
1649 Installation script fixes and deinstall scripts for IP Filter on:
1650 SunOS4/FreeBSD/NetBSD
1652 Man page fixes - Paul Dubois (dubois@primate.wisc.edu)
1654 Fix use of SOLARIS macro in ipmon, rewrote ipllog() (again!)
1656 parsing isn't completely case insensitive - David Wilson
1657 (davidw@optimation.com.au)
1659 Release ipl_mutex across uiomove() calls
1661 print entire rule entries out for "ipf -z" when zero'ing per-rule stats.
1663 ipfstat returns same output for "hits" in "ipfstat -aio" - Terletsky Slavik
1664 (ts@polynet.lviv.ua)
1666 New algorithm for setting timeouts for TCP connection (more closely follow
1667 TCP FSM) - Pradeep Krishnan (pkrishna@netcom.com)
1669 Track both window sizes for TCP connections through "keep state".
1671 Solaris2 doesn't like _KERNEL defined in stdargs.h - Jos van Wezel
1674 3.1.1-beta2 6/10/96 - Released
1676 Solaris2 fastroute/dup-to/to now works
1678 ipmon `record' reading rewritten
1680 Added post-NetBSD1.2 packet filter patches - Mathew Green (mrg@eterna.com.au)
1682 Attempt to use in_proto.c.diff, not "..diffs" for SunOS4 - David Wilson
1683 (davidw@optimation.com.au)
1685 Michael Ryan (mike@NetworX.ie) reports the following:
1686 * The Trumpet WinSock under Windows always sends its SYN packet with an ACK
1687 value of 1, unlike any other implementation I've seen, which would set it
1688 to zero. The "keep state" feature of IP Filter doesn't work when receiving
1689 non-zero ACK values on new connection requests.
1690 * */Makefile install rule doesn't install all the binaries/man pages
1691 * Make ipnat use "tcp/udp" instead of "tcpudp"
1692 * Print out "tcp/udp" properly
1693 * ipnat "portmap tcp" matches "portmap udp" when adding/removing
1694 * NAT dest. ip# increased by one on mask of 0xffffffff when it shouldn't
1696 3.1.1-beta 1/9/96 - Released
1698 add better detection of TCP connections closing to TCP state monitoring.
1700 fr_addstate() not called correctly for fragments. "keep state" and
1701 "keep frag" code don't work together 100% - Songqing Cai
1702 (songqing_cai@sterling.com)
1704 call to fr_addstate() incorrect for adding state in combination with keeping
1705 fragment information - Songqing Cai (songqing_cai@sterling.com)
1707 KFREE() passed fp (incorrect) and not fr (correct) in ip_frag.c - John Hood
1708 (cgull@smoke.marlboro.vt.us)
1710 make ipf parser recognise '\\' as a `continued line' marker - Dima Ruban
1713 3.1.1-alpha 23/8/96 - Released
1715 kernel panic's when ICMP packets go through NAT code
1717 stats aren't zero'd properly with ipf -Z
1719 ipnat doesn't show port numbers correctly all the time and also add the
1720 protocol (tcp/udp/tcpudp) to rdr output - Carson Gaspar (carson@lehman.com)
1722 fast checksum fixing not 100% - backout patch - Bill Dorsey (dorsey@lila.com)
1724 NetBSD-1.2 patches from - VaX#n8 <vax@linkdead.paranoia.com>
1726 Usage() call error in fils.c - Ajay Shekhawat (ajay@cedar.buffalo.edu)
1728 ip_optcopy() staticly defined in ip_output.c in SunOS4 - Nick Hall
1729 (nrh@tardis.ed.ac.uk)
1731 3.1.0 7/7/96 - Released
1733 Reformatted ipnat output to be compatible with it's input, so that
1734 "ipnat -l | ipnat -rf -" is possible.
1736 3.1.0beta 30/6/96 - Released
1738 NetBSD-1.2 patches from Greg Woods (woods@most.weird.com)
1740 kernel module must not be installed stripped (Solaris2), as created by
1741 "make package" for Solaris2 - Peter Heimann
1742 (peter@i3.informatik.rwth-aachen.de)
1744 3.1.0alpha 5/6/96 - Released
1746 include examples in package for solaris2
1748 patches for removing an extra ip header checksum (FreeBSD/NetBSD/SunOS)
1750 removed trailing space from printouts of rules in ipf.
1752 ipresend supports the same range of inputs that ipftest does.
1754 sending a duplicate copy of a packet to another network devices is now
1755 supported. ("dup-to")
1757 sending a packet to an arbitary interface is now supported, irrespective
1758 of its actual route, with no ttl decrement. Can also be routed without
1759 the ttl being decremented. ("to" and "fastroute").
1761 "call" option added to support calling a generic function if a packet is
1764 show all (upto 4) recorded bytes from the interface name in logging from
1767 support for using unix file permissions for read/write access on the device
1770 recursive mutex in nat_new() for Solaris 2.x - Per L. Hagen <per@stibo.dk>
1772 ipftest doesn't call initparse() for THISHOST - Catherine Allen
1773 (cla@connect.com.au)
1775 Man page corrections from Rex Bona (rex@pengo.comsmiths.com.au)
1777 3.0.4 10/4/96 - Released
1779 looop in `parsing' IP packets with optlen 0 for ip options.
1781 rule number not initialized and resulted in unexpected results for state
1784 option parsing and printing bugs - Pradeep Krishnan
1786 3.0.4beta 25/3/96 - Released
1788 wouldn't parse "keep flags keep state" correctly.
1790 SunOS4.1.x ip_input.c doesn't recognise all 1s broadcast address - Nigel Verdon
1792 patches for BSDI's BSD/OS 2.1 and libpcap reader on little endian systems
1793 from Thorsten Lockert <tholo@tetherless.com>
1795 b* functions in fil.c on Solaris 2.4
1797 3.0.3 17/3/96 - Released
1799 added patches to support IP Filter initialisation when compiled into the
1802 added -x option to ipmon to display hex dumps of logged packets.
1804 added -H option to ipftest to allow ascii-hex formatted input to specify
1805 arbitary IP packets.
1807 Sending TCP RSTs as a response now work for Solaris2 x86
1809 add patches to make IP Filter compile into NetBSD kernels properly.
1811 patch to stop SunOS 4.1.x kernels panicing with "data traps".
1813 ipfboot script unloads and reloads ipf module on Solaris2 if it is already
1814 loaded into the kernel.
1816 Installation of IP Filter as a Solaris2 package is now supported.
1818 Man pages for ipnat.4, ipnat.5 added.
1820 added some more regression tests and fixed up IP Filter to pass the new tests
1821 (previous versions failed some of the tests in set 12).
1823 IP option filter processing has changed so that saying "with opt lsrr" will
1824 check only for that one, but not mask out other options, so a packet with
1825 strict source routing, along with loose source routing will match all of
1826 "with opt lsrr", "with opt ssrr" and "with opt lsrr,ssrr".
1828 IPL_NAME needed in ipnat.c - Kelly (kelly@count04.mry.scruznet.com)
1830 patches for clean NetBSD compilation from Bernd Ernesti (bernd@arresum.inka.de)
1832 make install is incorrect - Julian Briggs (julian@lightwork.co.uk)
1834 strtol() returns 0x7fffffff for all negative numbers,
1835 printfr() generates incorrect output for "opt sec-class *",
1836 handling of "not opt xxx opt yyy" incorrect.
1837 - Minh Tonthat (minht@sbei.com)/Pradeep Krishnan (pradeepk@sbei.com)
1839 m_pullup() called only for input and not output; caused problems
1840 with filtering icmp - Nigel Verdon (verdenn@gb.swissbank.com)
1842 parsing problem for "port 1" and NetBSD patches incorrect -
1843 Andreas Gustafsson (gson@guava.araneus.fi)
1845 3.0.2 4/2/96 - Released
1847 Corrected bug where NAT recalculates checksums for fragments.
1849 make NAT recalculate UDP checksums (rather than setting them to 0),
1850 if they're non-zero.
1852 DNS patches - Real Page (Real.Page@Matrox.com)
1854 alteration of checksum recalculations in NAT code and addition of
1855 redirection with NAT - Mike Neuman
1857 core dump, if tcp/udp is used with a port number and not service name,
1858 in ipf - Mike Neuman (mcn@engarde.com)
1860 initparse() call, missing to prime "<thishost>" hook - Craig Bishop
1862 3.0.1 14/1/96 - Released
1864 miscellaneous patches for Solaris2
1866 3.0 14/1/96 - Released
1868 Patch included for FDDI, from Richard Ohnemus
1869 (Richard_Ohnemus@dallas.csd.sterling.com)
1871 Code cleanup for release.
1875 recursive mutex in ipfr_slowtimer fixed, reported by Craig Bishop
1877 recursive mutex in sending TCP RSTs fixed, reported by Tony Becker
1881 FIxup for Solaris2.5 install and interface name bug in ipftest from
1882 Julian Briggs (julian@lightwork.co.uk)
1884 Byte order patches for ipmon from Tony Becker (tony@mcrsys.com)
1888 Added the (somewhat warped) IP accounting as it exists in ipfw on FreeBSD.
1889 Note, this isn't really what one would call IP account, when compared to
1890 process accounting, sigh.
1892 Split up ipresend into iptest/ipresend/ipsend
1894 Added another m_pullup() inside fr_check() for BSD style kernels and
1895 added some checks to ipllog() to not log more than is present (for short
1898 Fixed bug where failed hostname/netname resolution goes undetecte and
1899 becomes 0.0.0.0 (any) (reported Guido van Rooij)
1901 3.0beta 11/11/95 - Released
1903 Rewrote the way rule testing is done, reducing the number of files needed and
1906 SIOCIPFFL was incorrectly affected by IPFILTER_LOG (Mathew Green)
1908 Patches from Guido van Rooij to fix sending back TCP RSTs on Net-2/Net-3
1909 BSD based Unixes (panic'd)
1911 Patches for FreeBSD/i86 ipmon from Riku Kalinen <riku@tequila.nixu.fi>
1912 (I think someone else already told me about these but they got lost :-/)
1914 Changed Makefile structure to build object files for different operating
1915 systems in separate directories by default.
1917 BSDI has ef0 for first ethernet interface
1919 Allow for a "not" operator before optional keywords.
1921 The "rule number" was being incorrectly incremented every time it went through
1922 the loop rather than when it matched a rule.
1924 2.8.2 24/10/95 - Released
1926 Fixed up problems with "textip" for doing lots of testing.
1928 Fixed bug in detection of "short" tcp/ip packets (all reported as being short).
1930 Solaris 2.4 port now works 100%.
1932 Man page errors reported and fixed.
1934 Removed duplicate entry in etc/services for login on port 49 (Craig Bishop).
1936 Fixed ipmon output to put a space after the log-letter.
1938 Patch from Guido van Rooij to fix parsing problem.
1940 2.8.1 15/10/95 - Released
1942 Added ttl and tos filtering.
1944 Patches for fixing up compilation and port problems (little endian)
1945 from Guido van Rooij <guido@IAEhv.nl>.
1947 Man page problems reported and fixed by Carson Gaspar <carson@lehman.com>.
1949 ipsend doesn't compile properly on Solaris2.4
1951 Lots of work done for Solaris2.4 to make it MT/MP safe and work.
1953 2.8 15/9/95 - Released
1955 ipmon can now send messages to syslogd (-s) and use names instead of
1958 IP packets are now "compiled" into a structure only containing filterable
1961 Added regression testing in the test/ subdirectory, using a new option
1962 (-b) with the ipftest program.
1964 Added "nomatch" return to filter results. These are counted and show
1965 up in reports from ipfstat.
1967 Moved filter code out of ip_fil.c and into fil.c - there is now only one
1968 instance of it in the package.
1970 Added Solaris 2.4 support.
1972 Added IPSO basic security option filtering.
1974 Added name support for filtering on all 19 named IP options.
1976 Patches from Ivan Brawley to log packet contents as well as packet headers.
1978 Update for sun/conf.c.diff from Ivan Brawley <ibrawley@awadi.com.AU>
1980 Added patches for FreeBSD 1, and added two new switches (-E, -D) to ipf,
1981 along with a new ioctl, SIOCFRENB.
1982 From: Dieter Dworkin Muller <dworkin@village.org>
1984 2.7.3 31/7.95 - Released
1986 Didn't compile cleanly without IPFILTER_LOG defined (Mathew Green).
1988 ipftest now deals with tcpdump3 binary output files (from libpcap) with -P.
1990 Brought ipftest program upto date with actual filter code.
1992 Filter would cause a match to occur when it wasn't meant to if the packet
1993 had short headers and was missing portions that should have been there.
1994 Err, it would rightly not match on them, but their absence caused a match
1995 when it shouldn't have been.
1997 2.7.2 26/7/95 - Released
1999 Problem with filtering just SYN flagged packets reported by
2000 Dieter Dworkin Muller <dworkin@village.org>. To solve this
2001 problem, added support for masking TCP flags for comparison "flags X/Y".
2003 2.7.1 9/7/95 - Released
2005 Added ip_dirbroadcast support for Sun ip_input.c
2007 Fixed up the install scripts for FreeBSD/NetBSD to recognise where they are
2010 2.7 7/7/95 - Released
2012 Added "return-rst" to return TCP RST's to TCP packets.
2014 Actually ported it to FreeBSD-i386 2.0.0, so it works there properly now.
2016 Added insertion of filter rules. Use "@<#>" at the beginning of a filter
2017 to insert a rule at row #.
2019 Filter keeps track of how many times each rule is matched.
2021 Changed compile time things to match kernel option (IPFILTER_LKM &
2024 Updated ip_input.c and ip_output.c with paches for 3.5 Multicast IP.
2025 (No change required for 3.6)
2027 Now includes TCP fragments which start inside the TCP header as being short.
2028 Added counting the number of times each rule is matched.
2031 2.6 11/5/95 - Released
2033 Added -n option to ipf: when supplied, no changes are made to the kernel.
2035 Added installation scripts for SunOS 4.1.x and NetBSD/FreeBSD/BSDI.
2037 Rewrote filtering to use a more generic mask & match procedure for
2038 checking if a packet matches a rule.
2040 2.5.2 27/4/95 - Released
2042 "tcp/udp" and a non-initialised pointer caused the "proto" to become
2043 a `random' value; added "ip#/dotted.mask" notation to the BNF.
2044 From Adam W. Feigin <feigin@iis.ee.ethz.ch>
2046 2.5.1 22/3/95 - Released
2048 "tcp/udp" had a strange effect (undesired) on getserv*() functions,
2049 causing protocol/service lookups to fail. Reported by Matthew Green.
2051 2.5 17/3/95 - Released
2053 Added a new keyword "all" to BNF and parsing of tcpdump/etherfind/snoop
2054 output through the ipftest program. Suggestions from:
2055 Michael Ciavarella (mikec@phyto.apana.org.au)
2057 Conflicts occur when "general" filter rules are used for ports and the
2058 lack of a "proto" when used with "port" matches other packets when only
2059 TCP/UDP are implied.
2060 Reported Matthew Green (mrg@fulcom.com.au);
2061 reported & fixed 6-8/3/95
2063 Added filtering of short TCP packets using "with short" 28/2/95
2064 (These can possibly slip by checks for the various flags). Short UDP
2065 or ICMP are dropped to the floor and logged.
2067 Added filtering of fragmented packets using "with frag" 24/2/95
2069 Port to NetBSD-current completed 20/2/95, using LKM.
2071 Added logging of the rule # which caused the logging to happen and the
2072 interface on which the packet is currently as suggested by
2073 Andreas Greulich (greulich@math-stat.unibe.ch) 10/2/95
2075 2.4 9/2/95 - Released
2076 Fixed saving of IP headers in ICMP packets.
2079 Added ipf -F [in|out|all] to flush filter rule sets (SIOCIPFFL).
2080 Fixed iplread() and iplsave() with help from Marc Huber.
2082 2.2 7/1/95 - Released
2083 Added code from Marc Huber <huber@fzi.de> to allow it to allocate
2084 its own major char number dynamically when modload'ing. Fixed up
2085 use of <, >, <=, >= and >< for ports.
2087 2.1 21/12/94 - Released
2088 repackaged to include the correct ip_output.c and ip_input.c *goof*
2090 2.0 18/12/94 - Released
2091 added code to check for port ranges - complete.
2092 rewrote to work as a loadable kernel module - complete.
2095 added code for ouput filtering as well as input filtering and added support for logging to a simple character device of packet headers.
2097 1.0 22/04/93 - Released