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 3.4.26 25/04/2002 - Released
27 fix parsing and printing of NAT rules with regression tests.
29 add code to adjust TCP checksums inside ICMP errors where present and as
32 fix documentation problems in instal documents
34 fix locking problem with auth code on Solaris
36 fix use of version macros for FreeBSD and make the use of __FreeBSD_version
37 override previous hacks except when not present
39 fix the macros defined for SIOCAUTHR and SIOCAUTHW
41 fix the H.323 proxy so it no longer panics (multiple issues: re-entry into
42 nat_ioctl with lock held on Solaris, trying to copy data from kernel space
43 with copyin, unaligned access to get 32bit & 16bit numbers)
45 use the ip_ttl ndd parameter on Solaris to fill in ip_ttl for packets
48 fix comparing state information to delete state table entries
50 flag packets as being "bad state" if they're outside the window and prevent
51 them from being able to cause new state to be created - except for SYN packets
53 be stricter about what packets match a TCP state table entry if its creation
54 was triggered by a SYN packet.
56 add patches to handle TCP window scaling
58 don't update TCP state table entries if the packet is not considered to be
59 part of the connection
61 ipfs wasn't allowing -i command line option in getopt
63 IRIX: fix kvm interface, fix compile warnings, compile the kernel with -O2
64 regardless of user compile, fix the getkflags script to prune down the
65 output more so it is acceptable
67 change building in Makefiles to create links to the application in $(TOP)
68 at the end of "build" rather than when each is created.
70 update BSD/kupgrade for FreeBSD
72 l4check wasn't properly closing things when a connection fails
74 man page updates for ipmon(8) and ipnat(5)
76 more regression tests added.
78 3.4.25 13/03/2002 - Released
80 retain rule # in state information
82 log the direction of a packet so ipmon gets it right rather than incorrectly
83 deriving it from the rule flags
85 add #ifdef for IPFILTER_LOGSIZE (put options IPFILTER_LOGSIZE=16384 in BSD
86 kernel config files to increase that buffer size)
88 recognise return-* rules differently to block in ipftest
90 fix bug in ipmon output for solaris
92 add regression testing for skip rules, logging and using head/group
94 fix output of ipmon: was displaying large unsigned ints rather than -1
95 when no rules matched.
97 make logging code compile into ipftest and add -l command line option to
98 dump binary log file (read with ipmon -f) when it finishes.
100 protect rule # and group # from interference when checking accounting rules
102 add regression testing for log output (text) from ipmon.
104 document -b command line option for ipmon
106 fix double-quick in Solaris startup script
108 3.4.24 01/03/2002 - Released
110 fix how files are installed on SunOS5
112 fix some minor problems in SunOS5 ipfboot script
114 by default, compile all OpenBSD tools in 3.0 for IPv6
116 fix NULL-pointer dereference in NAT code
118 make a better attempt at replacing the appropriate binaries on BSD systems
120 always print IPv6 icmp-types as a number
122 impose some rules about what "skip" can be used with
124 fix parsing problems with "keep state" and "keep state-age"
126 Try to read as much data as is in the log device in ipmon
128 remove some redundant checks when searching for rdr/nat rules
130 fix bug in handling of ACCT with FTP proxy
132 increase array size for interface names, using LIFNAMSIZ
134 include H.323 proxy from QNX
136 3.4.23 16/01/2002 - Released
138 Include patches to install IPFilter into OpenBSD 3.0, both for just kernel
139 compiles and complete system builds.
141 Fix bug in automatic flushing of state table which would cause it to hang
142 in an infinite loop bug introduced in 3.4.20.
144 Modify the sample proxy (samples/proxy.c) so that it ads a NAT mapping for
145 the outgoing connection to make it look like it comes from the real source.
147 Only support ICMPv6 with IPv6.
149 Move ipnat.1 to ipnat.8
151 Enhance ipmon to print textual ICMP[v6] types and subtypes where possible.
153 Make it possible to do IPv6 regression testing with ipftest.
155 Use kvm library for kmem access, rather than trying to do it manually with
158 Fix diffs for ip_input.c on BSDOS so it doesn't crash with fastroute.
160 Remove Berkeley advertising licence clause. Reference:
161 ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change
163 Add more regression tests: ICMPv6 neighbour discovery, ICMP time exceeded
164 and fragmentation required.
166 Fix ipfboot script on Solaris to deal with no nameservers or no route to
167 them in a clean manner.
169 Support per-rule set timeouts for non-TCP NAT and state
173 Add ICMPv6 stateful checking, including handling multicast destination
174 addresses for neighbour discovery.
176 Fix problems with internals of ICMP messages for MTU discovery and
177 unreachables not being correctly adjust on little endian boxes.
179 Add "in-via" and "out-via" to filtering rules grammar. It is now possible
180 to bind a rule to both incoming and outgoing interfaces, in both forward
181 and reverse directions (4 directions in total). allows for asymetric flows
184 Fix ipfstat and ipnat for working on crash dumps.
186 Don't let USE_INET6 stay defined for SunOS4
188 Count things we see for each interface on solaris.
190 Include <netinet/icmp6.h> when compiling with USE_INET6 defined and
191 also include a whole bunch of #define's to make sure the symbols expected
194 Fix up fastroute on BSD systems.
196 Make fastrouting work for IPv6 just a bit better. doesn't split up big
197 packets into fragments like the IPv4 one does. You can now do a
198 "to <if>:<ipv6_addr>"
200 Remove some of the differences between user-space and kernel-space code
201 that is internal to ipfilter.
203 Call ipfr_slowtimer() after each packet is processed in ipftest to artificially
204 create the illusion of passing time and include the expire functions in the
205 code compiled for user-space.
207 Fix issues with the IPSec proxy not working or leading to a system crash.
209 Junk all processing of SPIs and special handling for ESP.
211 Add "no-match" as a filter rule action (resets _LAST_ match)
213 Add hack to workaround problems with Cassini interface cards on
216 Add some protocols to etc/protocols
218 3.4.22 03/12/2001 - Released
220 various openbsd changes
222 sorting based on IP numbers for ipfstat top output
224 fix various IPv6 code & compile problems
226 modify ip_fil.c to be more netbsd friendly
228 fix fastroute bug where it modified a packet post-sending
230 fix get_unit() - don't understand why it was broken.
232 add FI_IGNOREPKT and don't count so marked packets when doing stats or
235 extend the interface name saved to log output
237 make proxies capable of extending the matching done on a packet with a
238 particular nat session
240 change interfaces inside NAT & state code to accomodate redesign to allow
243 fix bug when free'ing loaded rules that results in a memory leak
244 (only an issue with "ipf -rf -", not flush)
246 make ipftest capable of loading > 1 file or rules, making it now possible
247 to load both NAT & filter rules
249 fix hex input for ipftest to allow interface name & direction to work
251 show ipsec proxy details in ipnat output
253 if OPT_HEX is set in opts, print a packet out as hex
255 don't modify b_next or preseve it or preserve b_prev for solaris
257 fix up kinstall scripts to install all the files everywhere they need to
259 fix overflowing of bits in ip_off inside iptest
261 make userauth and proxy in samples directory compile
263 fix minimum size when doing a pullup for ESP & ICMPv6
265 3.4.21 24/10/2001 - Released
269 make state work for non-tcp/udp/icmp in a very simple way
271 include diffs for ipv6 firewall on openbsd-2.9
273 add compatibility filter wrapper for NetBSD-current
275 fix command line option problems with ipfs
277 if we fill the state table and a automated flush doesn't purge any
278 expiring entries, remove all entries idle for more than half a day
280 fix bug with sending resets/icmp errors where the pointer to the data
281 section of the packet was not being set (BSD only)
283 split out validating ftp commands and responses into different halves,
284 one for each of server & client.
286 do not compile in STATETOP support for specific architectures
288 fix INSTALL.FreeBSD to no longer provide directions and properly direct
289 people to the right file for the right version of FreeBSD.
291 3.4.20 24/07/2001 - Released
293 adjust NAT hashing to give a better spread across the table
295 show icmp code/type names in output, where known
297 fix bug in altering cached interface names in state when resync'ing
299 fix bug in real audio proxy that caused crashs
301 fix compiling using sunos4 cc
303 patch from casper to address weird exit problem for ipstat in top mode
305 patch from Greg Woods to produce names for icmp types/unreach codes,
308 fix bug where ipfr_fastroute() would use a mblk and it would also get
311 don't match fragments which would cause 64k length to be exceeded
313 ftp proxy fix for port numbers being setup for pasv ftp with state/nat
315 change hashing for NAT to include both IP#'s and ports.
317 Solaris fixes for IPv6
319 fix compiling iplang bits, under Solaris, for ipsend
321 3.4.19 29/06/2001 - Released
323 fix to support suspend/resume on solaris8 as well as ipv6
325 include group/group-head in match of filter rules
327 fix endian problem reading snoop files
329 make all licence comments point to the one place
331 fix ftp proxy to only advance state if a reply is received in response to
334 3.4.18 05/06/2001 - Released
336 fix up parsing of "from ! host" where '!' is separate
338 disable hardware checksums for NetBSD
340 put ipftest temporary files in . rather than /tmp
342 modify ftp proxy to be more intelligent about moving between states
343 and recognise new authentication commands
345 allow state/nat table sizes to be externally influenced
347 print out host mapping table for NAT with ipnat -l
349 fix handling of hardware checksum'ing on Solaris
351 fixup makefiles for Solaris
353 update regression tests
355 fix surrender of SPL's for failure cases
357 include patches for OpenBSD's new timeout mechanism
359 default ipl_unreach to ICMP_UNREACH_FILTER_PROHIB if defined, else make it
362 fix up handling of packets matching auth rules and interaction with state
364 add -q command line option to ipfstat on Solaris to list bound interfaces
366 add command line option to ipfstat/ipnat to select different core image
368 don't use ncurses on Solaris for STATETOP
370 fix includes to get FreeBSD version
372 do not byte swap ip_id
374 fix handling success for packets matching the auth rule
376 don't double-count short packets
378 add ICMP router discovery message size recognition
380 fix packet length calculation for IPv6
382 set CPUDIR when for install-sunos5 make target
384 SUNWspro -xF causes Solaris 2.5.1 kernel to crash
386 3.4.17 06/04/2001 - Released
388 fix fragment#0 handling bug where they could get in via cache information
389 created by state table entries
391 use ire_walk to look for ire cache entries with link layer headers cached
393 deal with bad SPL assumptions for log reading on BSD
395 fix ftp proxy to allow logins with passwords
397 some auth rule patches, fixing byte endian problems and returning as an error
399 support LOG_SECURITY, where available, in ipmon
401 don't return an error for packets which match auth rules
403 introduce fr_icmpacktimeout to timeout entries once an ICMP reply has
404 been seen separately to when created
406 3.4.16 15/01/2001 - Released
408 fix race condition in flushing of state entries that are timing out
412 log all NAT entries created, not just those via rules
414 3.4.15 17/12/2000 - Released
416 add minimum ttl filtering (to be replaced later by return-icmp-as-dest
417 for all ICMP packets matching state entries).
419 fix NAT'ing of fragments
421 fix sanity checks for ICMPV6
423 fix up compiling on IRIX 6.2 with IDF/IDL installed
425 3.4.14 02/11/2000 - Released
427 cause flushing NAT table to generate log records the same as state flush
430 fix ftp proxy port/pasv
432 fix problem where nat_{in,out}lookup() would release a write lock when it
435 add check for ipf6.conf in Solaris ipfboot
437 3.4.13 28/10/2000 - Released
439 fix introduced bug with ICMP packets being rejected when valid
441 fix bug with proxy's that don't set fin_dlen correctly when calling
444 3.4.12 26/10/2000 - Released
446 fix installing into FreeBSD-4.1
448 fix FTP proxy bug where it'd hang and make NAT slightly more efficient
450 fix general compiling errors/warnings on various platforms
452 don't access ICMP data fields that aren't there
454 3.4.11 09/10/2000 - Released
456 return NULL for IPv6 access control lists if it is disabled rather than
459 fix for getting protocol & packet length for IPv6 packets for pullup.
461 update plog script from version 0.8 to version 0.10
463 patch from Frank Volf adding fix_datacksum() to NAT code, enhancing the
464 capabilities for "fixing" checksums.
466 3.4.10 03/09/2000 - Released
468 merge patch from Frank Volf for ICMP nat handling of TCP/UDP data `errors'
470 getline() adjusts linenum now
472 add tcphalfclosed timeout
474 fill in icmp_nextmtu field if it is defined on the platform
476 RST generation fix from guido
478 force 32bit compile for gcc on solaris if it can't generate 64bit code
480 encase logging when fr_chksrc == 2 in #ifdef IPFILTER_LOG
482 fix up line wrap problems in plog script
484 fix ICMP packet handling to not drop valid ICMP errors
486 freebsd 5.0 compat changes
488 3.4.9 08/08/2000 - Released
490 implement new aging mechanism in fr_tcp_age()
492 fix icmp state checking bug
494 revamp buildsunos script and build both sparcv7/sparcv9 for Solaris
495 if on an Ultra with a 64bit system & compiler (Caseper Dik)
497 open ipfilter device read only if we know we can
499 print out better information for ICMP packets in ipmon
501 move checking for source spoofed packets to a point where we can generate
504 return EFAULT from ircopyptr/iwcopyptr
506 don't do ioctl(SIOCGETFS) for auth stats
508 fix up freeing mbufs for post-4.3BSD
510 fix returning of inc from ftp proxy
512 fix bugs with ipfs -R/-W (Caseper Dik)
514 3.4.8 19/07/2000 - Released
516 create fake opt_inet6.h for FreeBSD-4 compile as LKM
518 add #ifdef's for KLD_MODULE sanity
520 NAT fastroute'd packets which come out of return-*
522 fix upper/lower case crap in ftp proxy and get seq# checking fixed up.
524 3.4.7 08/07/2000 - Released
526 make "ipf -y" lookup NAT if's which are unknown
528 prepend line numbers to ioctl error messages in ipf/ipnat
530 don't apply patches to FreeBSD twice
532 allow for ip_len to be on an unaligned boundary early on in fr_precheck
534 fix printing of icmp code when it is 0
536 correct printing of port numbers in map rules with from/to
538 don't allow fr_func to be called at securelevel > 0 or rules to be added
539 if securelevel > 0 if they have a non-zero fr_func.
541 3.4.6 11/06/2000 - Released
543 add extra regression tests for new nat functionality
545 place restrictions on using '!' in map/rdr rules
547 fix up solaris compile problems
549 3.4.5 10/06/2000 - Released
551 mention -sl in ipfstat.8
553 fix/support '!' in from/to rules (rdr) for NAT
555 add from/to support to rdr NAT rules
557 don't send ICMP errors in response to ICMP errors
559 fix sunos5 compilation for "ipfstat-top" and cleanup ipfboot
561 input accounting list used for both outbound and inbound packets
563 3.4.4 23/05/2000 - Released
565 don't add TCP state if it is an RST packet and (attempt) to send out
566 RST/ICMP packets in a manner that bypasses IP Filter.
568 add patch to work with 4.0_STABLE delayed checksums
570 3.4.3 20/05/2000 - Released
574 don't truncate IPv6 packets on Solaris
576 fix keep state for ICMP ECHO
578 add some NAT stats and use def_nat_age rather than DEF_NAT_AGE
580 don't make ftp proxy drop packets
582 use MCLISREFERENCED() in tandem with M_EXT to check if IP fields need to be
585 fix up RST generation for non-Solaris
587 get "short" flag right for IPv6
589 3.4.2 - 10/5/2000 - Released
591 Fix bug in dealing with "hlen == 1 and opt > 1" - Itojun
593 ignore previous NAT mappings for 0/0 and 0/32 rules
595 bring in a completely new ftp proxy
597 allow NAT to cause packets to be dropped.
599 add NetBSD callout support for 1.4-current
601 3.4.1 - 30/4/2000 - Released
603 add ratoui() and fix parsing of group numbers to allow 0 - UINT_MAX
605 don't include opt_inet6.h for FreeBSD if KLD_MODULE is defined
607 Solaris must use copyin() for all types of ioctl() args
609 fix up screen/tty when leaving "top mode" of ipfstat
611 linked list for maptable not setup correctly in nat_hostmap()
613 check for maptable rather than nat_table[1] to see if malloc for maptable
614 succeeded in nat_init
616 fix handling of map NAT rules with "from/to" host specs
618 fix printout out of source address when using "from/to" with map rules
620 convert ip_len back to network byte order, not plen, for solaris as ip_len
621 may have been changed by NAT and plen won't reflect this
623 3.4 - 27/4/2000 - Released
625 source address spoofing can be turned on (fr_chksrc) without using
628 group numbers are now 32bits in size, up from 16bits
630 IPv6 filtering available
632 add frank volf's state-top patches
634 add load splitting and round-robin attribute to redirect rules
636 FreeBSD-4.0 support (including KLD)
638 add top-style operation mode for ipfstat (-t)
640 add save/restore of IP Filter state/NAT information (ipfs)
642 further ftp proxy security checks
644 support for adding and removing proxies at runtime
646 3.3.13 26/04/2000 - Released
648 Fix parsing of "range" with "portmap"
650 Relax checking of ftp replies, slightly.
652 Fix NAT timeouts for ICMP packets
654 SunOS4 patches for ICMP redirects from Jurgen Keil (jk@tools.de)
656 3.3.12 16/03/2000 - Released
658 tighten up ftp proxy behaviour. sigh. yuck. hate.
660 fix bug in range check for NAT where the last IP# was not used.
662 fix problem with icmp codes > 127 in filter rules caused bad things to
663 happen and in particular, where #18 caused the rule to be printed
666 fix bug with the spl level not being reset when returning EIO from
667 iplioctl due to ipfilter not being initialized yet.
669 3.3.11 04/03/2000 - Released
671 make "or-block" work with lines that start with "log"
673 fix up parsing and printing of rules with syslog levels in them
675 fix from Cy Schubert for calling of apr_fini only if non-null
678 3.3.10 24/02/2000 - Released
680 * fix back from guido for state tracking interfaces
682 * update for NetBSD pfil interface changes
684 * if attaching fails and we can abort, then cleanup when doing so.
687 * solaris.c (fr_precheck): After calling freemsg on mt, set it point to *mp.
688 * ipf.c (packetlogon): use flag to store the return value from get_flags.
689 * ipmon.c (init_tabs): General cleanup so we do not have to cast
690 an int s->s_port to u_int port and try to check if the u_int port
693 3.3.9 15/02/2000 - Released
695 fix scheduling of bad locking in fr_addstate() used when we attach onto
698 fix up ip_statesync() with storing interface names in ipstate_t
700 fix fr_running for LKM's - Eugene Polovnikov
702 junk using pullupmsg() for solaris - it's next to useless for what we
703 need to do here anyway - and implement what we require.
705 don't call fr_delstate() in fr_checkstate(), when compiled for a user
706 program, early but when we're finished with it (got fr & pass)
708 ipnat(5) fix from Guido
710 on solaris2, copy message and use that with filter if there is another
711 copy if it being used (db_ref > 1). bad for performance, but better
712 than causing a crash.
714 patch for solaris8-fcs compile from Casper Dik
716 3.3.8 01/02/2000 - Released
718 fix state handling of SYN packets.
720 add parsing recognition of extra icmp types/codes and fix handling of
721 icmp time stamps and mask requests - Frank volf
723 3.3.7 25/01/2000 - Released
725 sync on state information as well as NAT information when required
727 record nat protocol in all nat log records
729 don't reuse the IP# from an active NAT session if the IP# in the rule
730 has changed dynamically.
732 lookup the protocol for NAT log information in ipmon and pass that to
735 fix the bug with changing the outbound interface of a packet where it
736 would lead to a panic.
738 use fr_running instead of ipl_inited. (sysctl name change on freebsd)
740 return EIO if someone attempts an ioctl on state/nat if ipfilter is not
743 fix rule insertion bug
745 make state flushing clean anything that's not fully established (4/4)
747 call fr_state_flush() after we've released ipf_state so we don't generate
748 a recursive mutex acquisition panic
750 fix parsing of icmp code after return-icmp/return-icmp-as-dest and add
751 some patches to enhance parsing strength
753 3.3.6 28/12/1999 - Released
755 add in missing rwlock release in fr_checkicmpmatchingstate() and fix check
756 for ICMP_ECHO to only be for packet, not state entry which we don't have yet.
758 handle SIOCIPFFB in nat_ioctl() and fr_state_ioctl()
760 fix size of friostat for SunOS4
762 fix bug in running off the end of a buffer in real audio proxy
764 3.3.5 11/12/1999 - Released
766 fix parsing of "log level" and printing it back out too
768 <net/if_types.h> is only present on Solaris2.6/7/8
770 use send_icmp_err rather than icmp_error to send back a frag-needed error
773 do not use -b with add_drv on Solaris unless $BASEDIR is set.
775 fix problem where source address in icmp replies is reversed
777 fix yet another problem with real audio.
779 3.3.4 4/12/1999 - Released
781 fix up the real audio proxy to properly setup state information and NAT
782 entries, thanks to Laine Stump for testing/advice/fixes.
784 fix ipfr_fastroute to set dst->sin_addr (Sean Farley - appears to prevent
785 FreeBSD 3.3 from panic'ing) as this had been removed in prior hacks to this
788 fix kinstall for BSDI
790 support ICMP errors being allowed through for ICMP packets going out with
793 support hardware checksumming (gigabit ethernet cards) on Solaris thanks to
794 Tel.Net Media for providing hardware for testing.
796 patched from Frank Volf for ipmon (ICMP & fragmented packets) and allowing
797 ICMP responses to ICMP packets in the keep state table.
799 add in patches for hardware checksumming under solaris
801 Solaris install scripts now use $BASEDIR as appropriate.
805 fix "ipf -y" on solaris so that it rescans rules also for changes in
808 let ipmon become a daemon with -D if it is using syslog
810 fix parsing of return-icmp-as-dest(foo)
812 add reference to ipfstat -g to ipfstat.8
814 ipf_mutex needs to be declared for irix in ip_fil.c
816 3.3.3 22/10/1999 - Released
818 add -g command line option to ipfstat to show groups still define.
820 fix problem with fragment table not recording rule pointer when called
821 from state functions (fin_fr not set).
823 fixup fastroute problems with keep state rules.
825 load rules into inactive set first, so we don't disable things like NIS
826 lookups half way through processing - found by Kevin Littlejohn
828 fix handling of unaligned ip pointer for solaris
830 patch for fr_newauth from Rudi Sluijtman
832 fixed htons() bug in fr_tcpsum() where ip_p wasn't cast to u_short
834 3.3.2 23/09/1999 - Released
836 patches from Scott Presnell to fix rcmd proxy
838 patches from Greg to fix Solaris detachment of interfaces
840 add openbsd compatibility fixes
842 fix free'ing already freed memory in ipfr_slowtimer()
844 fix for deferencing invalid memory in cleaning up after a device disappears
846 3.3.1 14/8/1999 - Released
848 remove include file sys/user.h for irix
850 prevent people from running buildsunos directly
852 fix up some problems with the saving of rule pointers so that NAT saves
853 that information in case it should need to call fr_addstate() from a proxy.
855 fix up scanning for the end of FTP messages
857 don't remove /etc/opt/ipf in postremove
859 attempt to prevent people running buildsolaris script without doing a
862 fix timeout losing on freebsd3
864 3.3 7/8/1999 - Released
866 NAT: information (rules, mappings) are stored in hash tables; setup some
867 basic NAT regression testing.
869 display version name of installed kernel code when initializing.
871 add -V command line option to ipf, showing version (program and kernel
872 module) as well as the run-status of the kernel code.
874 fix problem with "log" rules actually affecting result of filtering.
876 automatically use SUNWspro if available and on a 64bit Solaris system for
879 add kernel proxies for rcmd(3) and RealAudio (PNA)
881 use timeout/untimeout on SunOS4/BSD platforms too rather than hijacking
884 fix IP headers generated through parsing of text information
886 fix NAT rules to be in the correct order again.
888 make keep-state work with to/fastroute keywords and enforce usage of those
891 update keep-state code with new algorithm from Guido
893 add FreeBSD-3 support
895 add return-icmp-as-dest option to retrun an ICMP packet using the original
896 destination as the source rather than a local IP address
898 add "level [facility.]<priority>" option to filter language
900 add changes from Guido to state code.
902 add code to return EPERM if the device is opened for writing and we're
903 in securelevel 2 or greater.
905 authentication code patches from Guido
909 fix ipmon rule printing of interfaces and add IN/OUT to the end of ipmon
912 fix bimap rules with hash tables
914 update addresses used in NAT mappings for 0/32 rules for any protocol but TCP
915 if it changes on the interface - check every ip_natexpire()
917 add redirect regression test
919 count buckets used in the state hash table.
921 fix sending of RST's with return-rst to use the ack number provided in
922 the packet being replied to in addition to the sequence number.
924 fix to compile as a 64bit application on solaris7-64bit
926 add NAT IP mapping to ranges of IP addresses that aren't CIDR specified
928 fix calculation of in_space parameter for NAT
930 fix `wrapping' when incrementing the next ip address for use in NAT
932 fix free'ing of kernel memory in ip_natunload on solaris
934 fix -l/-U command line options from interfering with each other
936 fix fastroute under solaris2 and cleanup compilation for solaris7
938 add install scripts and compile cleanly on BSD/OS 4.0
940 safely open files in /tmp for writing device output when testing.
942 fix uninitialized pointer bug in NAT
944 fix SIOCZRLST (zero list rule stats) bug with groups
946 change some usage of u_short to u_int in function calling
948 fix compilation for Solaris7 (SUNWspro)
950 change solaris makefiles to build for either sparc or i386 rather than
951 per-cpu (sun4u, etc).
955 add patches from George Michaelson for FreeBSD 3.0
957 add patch from Guido to provide ICMP checking for known state in the same
958 manner as is done for NAT.
960 enable FTP PASV proxying and enable wildcarding in NAT/state code for ports
961 for better PORT/PASV support with FTP.
963 bring into main tree static nat features: map-block and "auto" portmapping.
965 add in source host filtering for redirects (alan jones)
967 3.2.10 22/11/98 - Released
969 3.2.10beta9 17/11/98 - Released
971 fix fr_tcpsum problems in handling mbufs with an odd number of bytes
972 and/or split across an mbuf boundary
974 fix NAT list entry comparisons and allow multiple entries for the same
975 proxy (but on different ports).
977 don't create duplicate NAT entries for repeated PORT commands.
979 3.2.10beta8 14/11/98 - Released
981 always exit an rwlock before expecting to enter it again on solaris
983 fix loop in nat_new for pre-existing nat
985 don't setup state for an ftp connection if creating nat fails.
987 3.2.10beta7 05/11/98 - Released
989 set fake window in ipft_tx.c to ensure code passes tests.
991 cleaned up/enhanced ipnat -l/ipnat -lv output
993 fixed NAT handling of non-TCP/UDP packets, esp. for ICMP errors returned.
995 Solaris recusive mutex on icmp-error/tcp-reset - requires rwlock's rather
998 3.2.10beta6 03/11/98 - Released
1000 fix mixed use of krwlock_t and kmutex_t on Solaris2
1002 fix FTP proxy back up, splitting pasv code out of port code.
1004 3.2.10beta5 02/11/98 - Released
1006 fixed port translation in ICMP reply handling
1008 3.2.10beta4 01/11/98 - Released
1010 increase useful statistic collection on solaris
1012 filter DL_UNITDATA_REQ as well as DL_UNITDATA_IND on solaris
1014 disable PASV reply translation for now
1016 fail with an error if we try to load a NAT rule with a non-existant
1019 fix portmap usage with 0/0 and 0/32 map rules
1021 remove ap_unload/ap_expire - automatically done when NAT is cleaned up
1023 print "STATE:CLOSED" from ipmon if the connection progresses past established
1024 rather than "STATE:EXPIRED"
1026 3.2.10beta3 26/10/98 - Released
1028 fixed traceroute/nat problem
1030 rewrote nat/proxy interface
1032 ipnat now lists associated proxy sessions for each NAT where applicable
1034 3.2.10beta2 13/10/98 - Released
1036 use KRWLOCK_T in place of krwlock_t for solaris as well as irix
1038 disable use of read-write lock acquisition by default
1040 add in mb_t for linux, non-kernel
1042 some changes to progress compilation on linux with glibc
1044 change PASV as well as PORT when passed through kernel ftp proxy.
1046 don't allow window to become 0 in tcp state code
1048 make ipmon compile cleaner
1052 3.2.10beta 11/09/98 - Released
1054 stop fr_tcpsum() thinking it has run out of data when it hasn't.
1056 stop solaris panics due to fin_dp being something wild.
1058 revisit usage of ATOMIC_*()
1060 log closing state of TCP connection in "keep state"
1062 fix fake-arp table code for ipsend.
1064 ipmon now writes pid to a file.
1066 fix "ipmon -a" to actually activate all logging devices.
1068 add patches for BSDOS4.
1070 perl scripts for log analysis donated.
1072 3.2.9 22/06/98 - Released
1074 fix byte order for ICMP packets generated on Solaris
1076 fix some locking problems.
1078 fix malloc bug in NAT (introduced in 3.2.8).
1080 patch from guido for state connections that get fragmented
1082 3.2.8 08/06/98 - Released
1084 use readers/writers locks in Solaris2 in place of some mutexes.
1086 Solaris2 installation enhancements - Martin Forssen (maf@carlstedt.se)
1088 3.2.7 24/05/98 - Released
1090 u_long -> u_32_t conversions
1092 patches from Bernd Ernesti for NetBSD
1094 fixup ipmon to actually handle HUP's.
1096 Linux fixes from Michael H. Warfield (mhw@wittsend.com)
1098 update for keep state patch (not security related) - Guido
1100 dumphex() uses stdout rather than log
1102 3.2.6 18/05/98 - Released
1104 fix potential security loop hole in keep state code.
1108 3.2.5 09/05/98 - Released
1110 BSD/OS 3.1 .o files added for the kernel.
1112 fix sequence # skew vs window size check.
1114 fix minimum ICMP header size check.
1116 remove references to Cybersource.
1118 fix my email address.
1120 remove ntohl in ipnat - Thomas Tornblom
1122 3.2.4 09/04/98 - Released
1124 add script to make devices for /dev on BSD boxes
1126 fixup building into the kernel for FreeBSD 2.2.5
1128 add -D command line option to ipmon to make it a daemon and SIGHUP causes
1129 it to close and reopen the logfile
1131 fixup make clean and make package for SunOS5 - Marc Boucher
1133 postinstall keeps adding "minor=ipf ipl" - George Ross <gdmr@dcs.ed.ac.uk>
1135 protected by IP Filter gif - Sergey Solyanik <solik@atom.ru>
1137 3.2.3 10/11/97 - Released
1139 fix some iplang bugs
1141 fix tcp checksum data overrun, sgi #define changes,
1142 avoid infinite loop when nat'ing to single IP# - Marc Boucher
1144 fixup DEVFS usage for FreeBSD
1146 fix sunos5 "make clean" cleaning up too much
1148 3.2.2 28/11/97 - Released
1150 change packet matching to return actual error, if bad packet, to facilitate
1153 allow ip:netmask in grammar too now - Guido
1155 assume IRIX has u_int32_t in sys/types.h (needed for R10000)
1157 rewrite parts of command line options for ipmon
1159 fix TCP urgent packet & offset testing and add LAND attack test for iptest
1161 fix grammar error in yacc grammar for iplang
1163 redirect (rdr) destination port bytes-wapped when it shouldn't be.
1165 general: fr_check now returns error code, such as EHOSTUNREACH or
1166 ECONNRESET (attempt to make ECONNRESET work for locally outbound
1169 linux: enable return-rst, need to filter tcp retransmits which are sent
1170 separately from normal packets
1172 memory leak plugged in ip_proxy.c
1174 BSDI compatibility patches from Guido
1176 tcp checksum fix - Marc Boucher
1178 recursive mutex and ioctl param fix - Marc Boucher
1180 3.2.1 12/11/97 - Released
1184 port to Linux 2.0.31
1186 patches to make "map a/m -> 0/0" work with ftp proxying properly - Marc Boucher
1188 add "ipf -F s" and "ipf -F S" to flush state table entries.
1190 announce if logging is on or off when ip filter initializes.
1192 "ipf -F a" doesn't flush groups properly for Solaris.
1194 3.2 30/10/97 - Released
1196 ipnat doesn't successfully remove proxy mappings with "-rf" -
1199 use K&R C function style for solaris kernel code
1201 use m_adj() to decrease packet size in ftp proxy
1203 use mbufchainlen rather than msgdsize,
1204 IRIX update - Marc Boucher
1206 fix NetBSD modunload bug (pfil_add_hook done twice)
1208 patches for OpenBSD 2.1 - Craig Bevins <craigb@bitcom.net.au>
1210 3.2beta10 24/10/97 - Released
1212 fix fragment table entries allocated for NAT.
1214 fix tcp checksum calculations over mbuf/mblk boundaries
1216 fix panic for blen < 0 in ftp kernel proxy - marc boucher
1218 fix flushing of rules which have been grouped.
1220 3.2beta9 20/10/97 - Released
1222 some nit picking on solaris2 with SUNWspro - Michael Lyle <mrl@rpnet.net>
1224 ftp kernel proxy patches from Marc Boucher
1226 3.2beta8 13/10/97 - Released
1228 add support for passing ICMP errors back through NAT.
1230 IRIX port update - Marc Boucher
1232 calculate correct MIN size of packet to log for UDP - Marc Boucher
1234 need htons(ETHERTYPE_x) on little endian BSD boxes - Dave Huang
1236 copyright header fixups
1238 3.2beta7 23/09/97 - Released
1240 fickup problems introduced by prior merges & changes.
1242 3.2beta6 23/09/97 - Released
1244 patch for spin-reading race condition - Marc Boucher.
1246 IRIX port by Marc Boucher.
1248 compatibility updates for Linux to ipsend
1250 3.2beta5 13/09/97 - Released
1252 patches from Bernd Ernesti for NetBSD integration (mostly prototyping and
1253 compiler warning things)
1255 ipf -y will resync IP#'s allocated with 0/32 in NAT to match interface if it
1258 update manual pages and other documentation updates.
1260 3.2beta4 27/8/97 - Released
1262 enable setting IP and TCP options for iplang/
1264 Solaris2 patches from Marc Boucher.
1266 add groups for filter rules.
1268 3.2beta3 21/8/97 - Released
1270 patches for Solaris2 (interface panic solution ?): fix FIONREAD and
1271 replacing q_qinfo points - Marc Boucher <marc@CAM.ORG>
1273 change ipsend/* and ipsd/* copyright notices to be the same as ip filter's
1275 patch for SYN-ACK skew testing fix from Eric V. Smith <EricSmith@windsor.com>
1277 3.2beta2 6/8/97 - Released
1279 make it load on Solaris 2.3
1281 rewrote logging to remove solaris errors, introduced checking to see if the
1282 same packet is logged successively.
1284 fix filter cache to work when there are no rules loaded.
1286 add "raw" option to ipresend to send entire ethernet frames.
1288 nat list corruption bug - NetBSD - Klaus Klein
1290 3.2beta1 5/7/97 - Released
1292 patches from Jason Thorpe fixing: UNSIGNED_CHAR lossage, off_t being 64bits
1293 lossage, and other NetBSD bits.
1297 fixup fwtk patches and add protocol field for SIOCGNATL.
1299 rdr bugs reported by Alexander Romanyu (alexr@aix.krid.crimea.ua), with
1301 * rdr matched all packets of a given protocol (ignored ports).
1302 * severe bug in nat_delete which caused system crash/freeze.
1304 change Makefile so that CC isn't passed on for FreeBSD/NetBSD (will use
1305 the default CC - cc, not gcc)
1307 3.2alpha9 16/6/97 - Released
1309 added "skip" keyword.
1311 implement preauthentication of packets, as outlined by Guido.
1313 Make it compile as cleanly as possible with -Wall & general code cleanup
1315 getopt returns int, not char. Bernd Ernesti
1317 3.2alpha8 13/6/97 - Released
1319 code added to support "auth" rules which require a user program to allow them
1320 through. First revision and much of the code came from Guido.
1322 hex output from ipmon doesn't goto syslog when recovering from out of sync
1323 error. Luke Mewburn (lukem@connect.com.au)
1325 fix solaris2.6 lookup of destination ire's.
1327 ipnat doesn't throw away unused bits (after masking), causing it to
1328 behave incorrectly. Carson Gaspar
1330 NAT code doesn't include inteface name when matching - Alexey Mavrin
1333 replace old SunOS tcpip.h with new tcpip.h (from 4.4BSD) - Jason Thorpe.
1335 update install procedures to include ip_proxy.c
1337 mask out unused bits in NAT/RDR rules.
1339 use a generic type (u_32_t) for 32bit variables, rather than rely on
1340 u_long being such - Jason Thorpe.
1342 create a local "netinet" directory and include from ~netinet/*" rather than
1343 just "*" to make keeping the code working on ports easier.
1345 add an m_copydata and m_copyback for SunOS4 (based on 4.4BSD-Lite versions)
1347 documentation updates.
1349 NetBSD update from Jason Thorpe <thorpej@netbsd.org>
1351 allow RST's through with a matching SEQ # and 0 ACK. Guido Van Rooij
1353 ipmon uses excessive amounts of CPU on Solaris2 - Reinhard Bertram
1354 <Reinhard.Bertram@KOM.th-darmstadt.de>
1356 3.2alpha7 25/5/97 - Released
1358 add strlen for pre-2.2 kernels - Doug Kite <dkite@websgi.icomnet.com>
1360 setup bits and pieces for compiling into a FreeBSD-2.2 kernel.
1362 split up "bsd" targets. Now a separate netbsd/freebsd/bsd target.
1363 mln_ipl.c has been split up into itself and mlf_ipl.c (for freebsd).
1365 fix (negative) host matching in filtering.
1367 add sysctl interface for some variables when compiled into FreeBSD-2.2 kernels
1370 make all the candidates for kernel compiling include "netinet/..." and build
1371 a subdirectory "netinet" when compiling and symlink all .h files into this.
1373 add install make target to Makefile.ipsend
1375 3.2alpha6 8/5/97 - Released
1377 Add "!" (not) to hostname/ip matching.
1379 Automatically add packet info to the fragment cache if it is a fragment
1380 and we're translating addreses for.
1382 Automatically add packet info to the fragment cache if it is a fragment
1383 and we're "keeping state" for the packet.
1385 Solaris2 patches - Anthony Baxter (arb@connect.com.au)
1387 change install procedure for FreeBSD 2.2 to allow building to a kernel
1388 which is different to the running kernel.
1390 add FIONREAD for Solaris2!
1392 when expiring NAT table entries, if we would set a time to fr_tcpclosed
1393 (which is 1), make it fr_tcplaskack(20) so that the state tables have a
1398 add proxying skeleton support and sample ftp transparent proxy code.
1400 add printfs at startup to tell user what is happening.
1402 add packets & bytes for EXPIRE NAT log records.
1404 fix the "install-bsd" target in the root Makefile. Chris Williams
1407 Fixes for FreeBSD 2.2 (and later revs) to prevent panics. Julian Assange.
1409 3.2alpha4 2/4/97 - Released
1411 Some compiler warnings cleaned up.
1413 FreeBSD-2.2 patches for LKM completed.
1415 3.2alpha3 31/3/97 - Released
1417 ipmon changes: -N for reading NAT logfile, -S for reading state logfile.
1418 -a for reading all. -n now toggles hostname resolution.
1420 Add logging of new state entries and expiration of old state entries.
1421 count log successes and failures.
1423 Add logging of new NAT entries and expiration of old NAT entries.
1424 count log successes and failures.
1426 Use u_quad_t for records of bytes & packets where kept
1427 (IP Accounting: fr_hits, fr_bytes; IP state: is_pkts, is_bytes).
1429 Fixup use of CPU and DCPU in Makefiles.
1431 Fix broken 0/32 NAT mapping. Carl Makin <cmakin@nla.gov.au>
1435 Implement mapping to 0/32 as being an alias for automatically using the
1436 interface's first IP address.
1438 Implement separate minor devices for both NAT and IP state code.
1440 Fully prototype all functions.
1442 Fix Makefile problem due to attempt to fix Sun compiling problems.
1444 3.1.10 23/3/97 - Released
1446 ipfstat -a requires a -i or -o command line option too. Print an error
1447 when not present rather than attempt to do something.
1449 patch updates for SunOS4 for kernel compiling.
1450 patch for ipmon -s (flush's syslog file which isn't good). Andrew J. Schorr
1451 <schorr@ead.dsa.com>
1453 too many people hit their heads hard when compiling code into the kernel
1454 that doesn't let any packets through. (fil.c - IPF_NOMATCH)
1456 icmp-type parsing doesn't return any errors when it isn't constructed
1457 correctly. Neil Readwin
1459 Using "-conf" with modload on SunOS4 doesn't work.
1460 Timothy Demarest <demarest@arraycomm.com>
1462 Need to define ARCH in makefile for SunOS4 building. "make sunos4"
1463 in INSTALL.SunOS is incorrect. James R Grinter <jrg@blodwen.demon.co.uk>
1464 [all SunOS targets now run buildsunos]
1466 NAT lookups are still incorrect, matching non-TCP/UDP with TCP/UDP
1467 information. ArkanoiD <ark@paranoid.convey.ru>
1469 Need to check for __FreeBSD_version being 199511 rather than 199607
1470 in mln_ipl.c. Eric Feillant <Eric.Feillant@EUnet.fr>
1472 3.1.9 8/3/97 - Released
1474 fixed incorrect lookup of active NAT entries.
1476 patch for ip_deq() wrong for pre 2.1.6 FreeBSD.
1477 fyeung@fyeung8.netific.com (Francis Yeung)
1479 check for out with return-rst/return-icmp at wrong place - Erkki Ritoniemi
1482 text_readip returns the interface pointer pointing to text on stack -
1485 fix from Pradeep Krishnan for printout rules "with not opt sec".
1487 3.1.8 18/2/97 - Released
1489 Diffs for ip_output.c and ip_input.c updated to fix bug with fastroute and
1490 compiling warnings about reuse of m0.
1492 prevent use of return-rst and return-icmp with rules blocking packets going
1493 out, preventing panics in certain situations.
1495 loop forms in frag cache table - Yury Pshenychny <yura@rd.zgik.zaporizhzhe.ua>
1497 should use SPLNET/SPLX around expire routines in NAT/frag/state code.
1499 redeclared malloc in 44arp.c -
1501 3.1.7 8/2/97 - Released
1503 Macros used for ntohs/htons supplied with gcc don't always work very well
1504 when the assignment is the same variable being converted.
1506 Filter matching doesn't not match rule which checks tcp flags on packets
1507 which are fragments - David Wilson
1509 3.1.7beta 30/1/97 - Released
1511 Fix up NAT bugs introduced in last major change (now tested), including
1512 nat_delete(), nat_lookupredir(), checksum changes, etc.
1514 3.1.7alpha 30/1/97 - Released
1516 Many changes to NAT code, including contributions from Laurent Joncheray
1519 Use "NO_SLEEP" when allocating memory under SunOS.
1521 Make kernel printf's nicer for BSD/SunOS4
1523 Always do a checksum for packets being filtered going out and being
1524 processed by fastroute.
1526 Leave kernel to play with cdevsw on *BSD systems with LKM's.
1528 ipnat.1 man page fixes.
1530 3.1.6 21/1/97 - Released
1532 Allow NAT to work on BSD systems in conjunction with "pass .. to ifname"
1534 Memory leak introduced in 3.1.3 in NAT lists, clearing of NAT table tried
1535 to free memory twice.
1537 NAT recalculates IP header checksum based on difference between IP#'s and
1538 port numbers - should be just IP#'s (Solaris2 only)
1540 3.1.5 13/1/97 - Released
1542 fixed setting of NAT timeouts and use different timeouts for concurrent
1543 TCP sessions using the same IP# mapping (when port mapping isn't used)
1545 multiple loading/unloading of LKM's doesn't clean up cdevsw properly for
1548 3.1.4 10/1/97 - Released
1550 add command line options -C and -F to ipnat to flush NAT list and table
1552 ipnat -l loops on output - Neil Readwin (nreadwin@nysales.micrognosis.com)
1554 NetBSD/FreeBSD kernel malloc changes - Daniel Carosone
1556 3.1.3 10/1/97 - Released
1558 NAT chains not constructed correctly in hash tables - Antony Y.R Lu
1559 (antony@hawk.ee.ncku.edu.tw)
1561 Updated INSTALL.NetBSD, INSTALL.FreeBSD and INSTALL.Sol2
1563 man page update (ipf.5) from Daniel Carosone (dan@geek.com.au)
1565 ICMP header checksum update now included in NAT.
1567 Solaris2 needs to modify IP header checksums in ip_natin and ip_natout.
1569 3.1.2 4/12/96 - Released
1571 ipmon doesn't use syslog all the time when given -s option
1573 fixed mclput panic in ip_input.c and replace ntohs() with NTOHS() macro
1575 check the results of hostname resolution in ipnat
1577 "make *install" fixed for subdirectories.
1579 problems with "ARCH:=" and gnu make resolved
1581 parser reports an error for lines with whitespaces only rather than skipping
1582 them. D.Carosone@abm.com.au (Daniel Carosone)
1584 patches for integration into NetBSD-current (post 1.2).
1586 add an option to allow non-IP packets going up/down the stream on Solaris2
1587 to be dropped. John Bass.
1589 3.1.2beta 21/11/96 - Released
1591 make ipsend compile on Linux 2.0.24
1593 changes to TCP kept state algorithm, making it watch state on TCP
1594 connections in both directions. Also use the same algorithm for NAT TCP.
1596 -Wall cleanup - Bernd Ernesti
1598 added "or-block" for "pass .. log or-block" after a suggestion from
1599 David Oppenheim (davido@optimation.com.au)
1601 added subdirectories for building IP Filter in SunOS5/BSD for different
1604 Solaris2 fixes to logging and pre-filtering packet processing - 3.1.1p2
1606 mbuf logging not using mtod(), remove iplbusy - 3.1.1p1 1/11/96
1608 3.1.1 28/10/96 - Released
1610 Installation script fixes and deinstall scripts for IP Filter on:
1611 SunOS4/FreeBSD/NetBSD
1613 Man page fixes - Paul Dubois (dubois@primate.wisc.edu)
1615 Fix use of SOLARIS macro in ipmon, rewrote ipllog() (again!)
1617 parsing isn't completely case insensitive - David Wilson
1618 (davidw@optimation.com.au)
1620 Release ipl_mutex across uiomove() calls
1622 print entire rule entries out for "ipf -z" when zero'ing per-rule stats.
1624 ipfstat returns same output for "hits" in "ipfstat -aio" - Terletsky Slavik
1625 (ts@polynet.lviv.ua)
1627 New algorithm for setting timeouts for TCP connection (more closely follow
1628 TCP FSM) - Pradeep Krishnan (pkrishna@netcom.com)
1630 Track both window sizes for TCP connections through "keep state".
1632 Solaris2 doesn't like _KERNEL defined in stdargs.h - Jos van Wezel
1635 3.1.1-beta2 6/10/96 - Released
1637 Solaris2 fastroute/dup-to/to now works
1639 ipmon `record' reading rewritten
1641 Added post-NetBSD1.2 packet filter patches - Mathew Green (mrg@eterna.com.au)
1643 Attempt to use in_proto.c.diff, not "..diffs" for SunOS4 - David Wilson
1644 (davidw@optimation.com.au)
1646 Michael Ryan (mike@NetworX.ie) reports the following:
1647 * The Trumpet WinSock under Windows always sends its SYN packet with an ACK
1648 value of 1, unlike any other implementation I've seen, which would set it
1649 to zero. The "keep state" feature of IP Filter doesn't work when receiving
1650 non-zero ACK values on new connection requests.
1651 * */Makefile install rule doesn't install all the binaries/man pages
1652 * Make ipnat use "tcp/udp" instead of "tcpudp"
1653 * Print out "tcp/udp" properly
1654 * ipnat "portmap tcp" matches "portmap udp" when adding/removing
1655 * NAT dest. ip# increased by one on mask of 0xffffffff when it shouldn't
1657 3.1.1-beta 1/9/96 - Released
1659 add better detection of TCP connections closing to TCP state monitoring.
1661 fr_addstate() not called correctly for fragments. "keep state" and
1662 "keep frag" code don't work together 100% - Songqing Cai
1663 (songqing_cai@sterling.com)
1665 call to fr_addstate() incorrect for adding state in combination with keeping
1666 fragment information - Songqing Cai (songqing_cai@sterling.com)
1668 KFREE() passed fp (incorrect) and not fr (correct) in ip_frag.c - John Hood
1669 (cgull@smoke.marlboro.vt.us)
1671 make ipf parser recognise '\\' as a `continued line' marker - Dima Ruban
1674 3.1.1-alpha 23/8/96 - Released
1676 kernel panic's when ICMP packets go through NAT code
1678 stats aren't zero'd properly with ipf -Z
1680 ipnat doesn't show port numbers correctly all the time and also add the
1681 protocol (tcp/udp/tcpudp) to rdr output - Carson Gaspar (carson@lehman.com)
1683 fast checksum fixing not 100% - backout patch - Bill Dorsey (dorsey@lila.com)
1685 NetBSD-1.2 patches from - VaX#n8 <vax@linkdead.paranoia.com>
1687 Usage() call error in fils.c - Ajay Shekhawat (ajay@cedar.buffalo.edu)
1689 ip_optcopy() staticly defined in ip_output.c in SunOS4 - Nick Hall
1690 (nrh@tardis.ed.ac.uk)
1692 3.1.0 7/7/96 - Released
1694 Reformatted ipnat output to be compatible with it's input, so that
1695 "ipnat -l | ipnat -rf -" is possible.
1697 3.1.0beta 30/6/96 - Released
1699 NetBSD-1.2 patches from Greg Woods (woods@most.weird.com)
1701 kernel module must not be installed stripped (Solaris2), as created by
1702 "make package" for Solaris2 - Peter Heimann
1703 (peter@i3.informatik.rwth-aachen.de)
1705 3.1.0alpha 5/6/96 - Released
1707 include examples in package for solaris2
1709 patches for removing an extra ip header checksum (FreeBSD/NetBSD/SunOS)
1711 removed trailing space from printouts of rules in ipf.
1713 ipresend supports the same range of inputs that ipftest does.
1715 sending a duplicate copy of a packet to another network devices is now
1716 supported. ("dup-to")
1718 sending a packet to an arbitary interface is now supported, irrespective
1719 of its actual route, with no ttl decrement. Can also be routed without
1720 the ttl being decremented. ("to" and "fastroute").
1722 "call" option added to support calling a generic function if a packet is
1725 show all (upto 4) recorded bytes from the interface name in logging from
1728 support for using unix file permissions for read/write access on the device
1731 recursive mutex in nat_new() for Solaris 2.x - Per L. Hagen <per@stibo.dk>
1733 ipftest doesn't call initparse() for THISHOST - Catherine Allen
1734 (cla@connect.com.au)
1736 Man page corrections from Rex Bona (rex@pengo.comsmiths.com.au)
1738 3.0.4 10/4/96 - Released
1740 looop in `parsing' IP packets with optlen 0 for ip options.
1742 rule number not initialized and resulted in unexpected results for state
1745 option parsing and printing bugs - Pradeep Krishnan
1747 3.0.4beta 25/3/96 - Released
1749 wouldn't parse "keep flags keep state" correctly.
1751 SunOS4.1.x ip_input.c doesn't recognise all 1s broadcast address - Nigel Verdon
1753 patches for BSDI's BSD/OS 2.1 and libpcap reader on little endian systems
1754 from Thorsten Lockert <tholo@tetherless.com>
1756 b* functions in fil.c on Solaris 2.4
1758 3.0.3 17/3/96 - Released
1760 added patches to support IP Filter initialisation when compiled into the
1763 added -x option to ipmon to display hex dumps of logged packets.
1765 added -H option to ipftest to allow ascii-hex formatted input to specify
1766 arbitary IP packets.
1768 Sending TCP RSTs as a response now work for Solaris2 x86
1770 add patches to make IP Filter compile into NetBSD kernels properly.
1772 patch to stop SunOS 4.1.x kernels panicing with "data traps".
1774 ipfboot script unloads and reloads ipf module on Solaris2 if it is already
1775 loaded into the kernel.
1777 Installation of IP Filter as a Solaris2 package is now supported.
1779 Man pages for ipnat.4, ipnat.5 added.
1781 added some more regression tests and fixed up IP Filter to pass the new tests
1782 (previous versions failed some of the tests in set 12).
1784 IP option filter processing has changed so that saying "with opt lsrr" will
1785 check only for that one, but not mask out other options, so a packet with
1786 strict source routing, along with loose source routing will match all of
1787 "with opt lsrr", "with opt ssrr" and "with opt lsrr,ssrr".
1789 IPL_NAME needed in ipnat.c - Kelly (kelly@count04.mry.scruznet.com)
1791 patches for clean NetBSD compilation from Bernd Ernesti (bernd@arresum.inka.de)
1793 make install is incorrect - Julian Briggs (julian@lightwork.co.uk)
1795 strtol() returns 0x7fffffff for all negative numbers,
1796 printfr() generates incorrect output for "opt sec-class *",
1797 handling of "not opt xxx opt yyy" incorrect.
1798 - Minh Tonthat (minht@sbei.com)/Pradeep Krishnan (pradeepk@sbei.com)
1800 m_pullup() called only for input and not output; caused problems
1801 with filtering icmp - Nigel Verdon (verdenn@gb.swissbank.com)
1803 parsing problem for "port 1" and NetBSD patches incorrect -
1804 Andreas Gustafsson (gson@guava.araneus.fi)
1806 3.0.2 4/2/96 - Released
1808 Corrected bug where NAT recalculates checksums for fragments.
1810 make NAT recalculate UDP checksums (rather than setting them to 0),
1811 if they're non-zero.
1813 DNS patches - Real Page (Real.Page@Matrox.com)
1815 alteration of checksum recalculations in NAT code and addition of
1816 redirection with NAT - Mike Neuman
1818 core dump, if tcp/udp is used with a port number and not service name,
1819 in ipf - Mike Neuman (mcn@engarde.com)
1821 initparse() call, missing to prime "<thishost>" hook - Craig Bishop
1823 3.0.1 14/1/96 - Released
1825 miscellaneous patches for Solaris2
1827 3.0 14/1/96 - Released
1829 Patch included for FDDI, from Richard Ohnemus
1830 (Richard_Ohnemus@dallas.csd.sterling.com)
1832 Code cleanup for release.
1836 recursive mutex in ipfr_slowtimer fixed, reported by Craig Bishop
1838 recursive mutex in sending TCP RSTs fixed, reported by Tony Becker
1842 FIxup for Solaris2.5 install and interface name bug in ipftest from
1843 Julian Briggs (julian@lightwork.co.uk)
1845 Byte order patches for ipmon from Tony Becker (tony@mcrsys.com)
1849 Added the (somewhat warped) IP accounting as it exists in ipfw on FreeBSD.
1850 Note, this isn't really what one would call IP account, when compared to
1851 process accounting, sigh.
1853 Split up ipresend into iptest/ipresend/ipsend
1855 Added another m_pullup() inside fr_check() for BSD style kernels and
1856 added some checks to ipllog() to not log more than is present (for short
1859 Fixed bug where failed hostname/netname resolution goes undetecte and
1860 becomes 0.0.0.0 (any) (reported Guido van Rooij)
1862 3.0beta 11/11/95 - Released
1864 Rewrote the way rule testing is done, reducing the number of files needed and
1867 SIOCIPFFL was incorrectly affected by IPFILTER_LOG (Mathew Green)
1869 Patches from Guido van Rooij to fix sending back TCP RSTs on Net-2/Net-3
1870 BSD based Unixes (panic'd)
1872 Patches for FreeBSD/i86 ipmon from Riku Kalinen <riku@tequila.nixu.fi>
1873 (I think someone else already told me about these but they got lost :-/)
1875 Changed Makefile structure to build object files for different operating
1876 systems in separate directories by default.
1878 BSDI has ef0 for first ethernet interface
1880 Allow for a "not" operator before optional keywords.
1882 The "rule number" was being incorrectly incremented every time it went through
1883 the loop rather than when it matched a rule.
1885 2.8.2 24/10/95 - Released
1887 Fixed up problems with "textip" for doing lots of testing.
1889 Fixed bug in detection of "short" tcp/ip packets (all reported as being short).
1891 Solaris 2.4 port now works 100%.
1893 Man page errors reported and fixed.
1895 Removed duplicate entry in etc/services for login on port 49 (Craig Bishop).
1897 Fixed ipmon output to put a space after the log-letter.
1899 Patch from Guido van Rooij to fix parsing problem.
1901 2.8.1 15/10/95 - Released
1903 Added ttl and tos filtering.
1905 Patches for fixing up compilation and port problems (little endian)
1906 from Guido van Rooij <guido@IAEhv.nl>.
1908 Man page problems reported and fixed by Carson Gaspar <carson@lehman.com>.
1910 ipsend doesn't compile properly on Solaris2.4
1912 Lots of work done for Solaris2.4 to make it MT/MP safe and work.
1914 2.8 15/9/95 - Released
1916 ipmon can now send messages to syslogd (-s) and use names instead of
1919 IP packets are now "compiled" into a structure only containing filterable
1922 Added regression testing in the test/ subdirectory, using a new option
1923 (-b) with the ipftest program.
1925 Added "nomatch" return to filter results. These are counted and show
1926 up in reports from ipfstat.
1928 Moved filter code out of ip_fil.c and into fil.c - there is now only one
1929 instance of it in the package.
1931 Added Solaris 2.4 support.
1933 Added IPSO basic security option filtering.
1935 Added name support for filtering on all 19 named IP options.
1937 Patches from Ivan Brawley to log packet contents as well as packet headers.
1939 Update for sun/conf.c.diff from Ivan Brawley <ibrawley@awadi.com.AU>
1941 Added patches for FreeBSD 1, and added two new switches (-E, -D) to ipf,
1942 along with a new ioctl, SIOCFRENB.
1943 From: Dieter Dworkin Muller <dworkin@village.org>
1945 2.7.3 31/7.95 - Released
1947 Didn't compile cleanly without IPFILTER_LOG defined (Mathew Green).
1949 ipftest now deals with tcpdump3 binary output files (from libpcap) with -P.
1951 Brought ipftest program upto date with actual filter code.
1953 Filter would cause a match to occur when it wasn't meant to if the packet
1954 had short headers and was missing portions that should have been there.
1955 Err, it would rightly not match on them, but their absence caused a match
1956 when it shouldn't have been.
1958 2.7.2 26/7/95 - Released
1960 Problem with filtering just SYN flagged packets reported by
1961 Dieter Dworkin Muller <dworkin@village.org>. To solve this
1962 problem, added support for masking TCP flags for comparison "flags X/Y".
1964 2.7.1 9/7/95 - Released
1966 Added ip_dirbroadcast support for Sun ip_input.c
1968 Fixed up the install scripts for FreeBSD/NetBSD to recognise where they are
1971 2.7 7/7/95 - Released
1973 Added "return-rst" to return TCP RST's to TCP packets.
1975 Actually ported it to FreeBSD-i386 2.0.0, so it works there properly now.
1977 Added insertion of filter rules. Use "@<#>" at the beginning of a filter
1978 to insert a rule at row #.
1980 Filter keeps track of how many times each rule is matched.
1982 Changed compile time things to match kernel option (IPFILTER_LKM &
1985 Updated ip_input.c and ip_output.c with paches for 3.5 Multicast IP.
1986 (No change required for 3.6)
1988 Now includes TCP fragments which start inside the TCP header as being short.
1989 Added counting the number of times each rule is matched.
1992 2.6 11/5/95 - Released
1994 Added -n option to ipf: when supplied, no changes are made to the kernel.
1996 Added installation scripts for SunOS 4.1.x and NetBSD/FreeBSD/BSDI.
1998 Rewrote filtering to use a more generic mask & match procedure for
1999 checking if a packet matches a rule.
2001 2.5.2 27/4/95 - Released
2003 "tcp/udp" and a non-initialised pointer caused the "proto" to become
2004 a `random' value; added "ip#/dotted.mask" notation to the BNF.
2005 From Adam W. Feigin <feigin@iis.ee.ethz.ch>
2007 2.5.1 22/3/95 - Released
2009 "tcp/udp" had a strange effect (undesired) on getserv*() functions,
2010 causing protocol/service lookups to fail. Reported by Matthew Green.
2012 2.5 17/3/95 - Released
2014 Added a new keyword "all" to BNF and parsing of tcpdump/etherfind/snoop
2015 output through the ipftest program. Suggestions from:
2016 Michael Ciavarella (mikec@phyto.apana.org.au)
2018 Conflicts occur when "general" filter rules are used for ports and the
2019 lack of a "proto" when used with "port" matches other packets when only
2020 TCP/UDP are implied.
2021 Reported Matthew Green (mrg@fulcom.com.au);
2022 reported & fixed 6-8/3/95
2024 Added filtering of short TCP packets using "with short" 28/2/95
2025 (These can possibly slip by checks for the various flags). Short UDP
2026 or ICMP are dropped to the floor and logged.
2028 Added filtering of fragmented packets using "with frag" 24/2/95
2030 Port to NetBSD-current completed 20/2/95, using LKM.
2032 Added logging of the rule # which caused the logging to happen and the
2033 interface on which the packet is currently as suggested by
2034 Andreas Greulich (greulich@math-stat.unibe.ch) 10/2/95
2036 2.4 9/2/95 - Released
2037 Fixed saving of IP headers in ICMP packets.
2040 Added ipf -F [in|out|all] to flush filter rule sets (SIOCIPFFL).
2041 Fixed iplread() and iplsave() with help from Marc Huber.
2043 2.2 7/1/95 - Released
2044 Added code from Marc Huber <huber@fzi.de> to allow it to allocate
2045 its own major char number dynamically when modload'ing. Fixed up
2046 use of <, >, <=, >= and >< for ports.
2048 2.1 21/12/94 - Released
2049 repackaged to include the correct ip_output.c and ip_input.c *goof*
2051 2.0 18/12/94 - Released
2052 added code to check for port ranges - complete.
2053 rewrote to work as a loadable kernel module - complete.
2056 added code for ouput filtering as well as input filtering and added support for logging to a simple character device of packet headers.
2058 1.0 22/04/93 - Released