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32 .Nd system configuration information
36 contains descriptive information about the local host name, configuration
37 details for any potential network interfaces and which services should be
38 started up at system initial boot time. In new installations, the
40 file is generally initialized by the system installation utility:
41 .Pa /stand/sysinstall .
45 is not to run commands or perform system startup actions
46 directly. Instead, it is included by the
47 various generic startup scripts in
49 which conditionalize their
50 internal actions according to the settings found there.
54 file is included from the file
55 .Pa /etc/defaults/rc.conf ,
56 which specifies the default settings for all the available options.
58 need only be specified in
60 when the system administrator wishes to override these defaults.
62 .Pa /etc/rc.conf.local
63 is used to override settings in
65 for historical reasons.
70 The following list provides a name and short description for each
71 variable that can be set in the
79 then no swapfile is installed, otherwise the value is used as the full
80 pathname to a file to use for additional swap space.
85 enable support for Automatic Power Management with
93 to handle APM event from userland.
94 This also enable support for APM.
101 these are the flags to pass to the
108 enable PCCARD support at boot time.
111 Set to PCCARD controller memory address or
113 for the default value.
114 .It Va pccard_ifconfig
116 List of arguments to be passed to
119 insertion of the card (e.g. "inet 192.168.1.1 netmask 255.255.255.0"
120 for a fixed address or "DHCP" for a DHCP client).
124 set the PCCARD controller to silent mode.
128 set it to melody mode.
131 Path to the configuration file for the
134 .Pa /etc/pccard.conf.sample ) .
141 these are the flags to pass to the
144 .It Va pccard_ether_delay
146 Set the delay before starting
151 This defaults to 5 seconds to work around a bug in the
153 driver which can lead to system hangs when using some newer
156 .It Va removable_interfaces
158 List of removable network interfaces to be supported by
159 .Pa /etc/pccard_ether .
162 List of directories to search for startup script files.
163 .It Va script_name_sep
165 The field separator to use for breaking down the list of startup script files
166 into individual filenames.
167 The default is a space.
168 It is not necessary to change this unless there are startup scripts with names
172 The Fully Qualified Domain Name of this host on the network.
173 This should almost certainly be set to something meaningful, even if
174 there is no network connection.
177 is used to set the hostname via DHCP,
178 this variable should be set to an empty string.
181 The NIS domain name of this host, or
186 Path to the DHCP client program
187 .Pa ( /sbin/dhclient ,
192 Additional flags to pass to the DHCP client program.
193 For the ISC DHCP client, see the
195 page for a description of the command line options available.
196 .It Va firewall_enable
200 to load firewall rules at startup.
201 If the kernel was not built with
204 kernel module will be loaded.
206 .Va ipfilter_enable .
207 .It Va firewall_script
209 This variable specifies the full path to the firewall script to run.
211 .Pa /etc/rc.firewall .
214 Names the firewall type from the selection in
215 .Pa /etc/rc.firewall ,
216 or the file which contains the local firewall ruleset. Valid selections
218 .Pa /etc/rc.firewall ,
221 - unrestricted IP access;
223 - all IP services disabled, except via lo0;
225 - basic protection for a workstation;
227 - basic protection for a LAN. If a filename is specified, the full path
229 .It Va firewall_quiet
233 to disable the display of ipfw rules on the console during boot.
234 .It Va firewall_logging
238 to enable ipfw event logging.
239 This is equivalent to the
240 .Dv IPFIREWALL_VERBOSE
242 .It Va firewall_flags
248 specifies a filename.
263 sockets must be enabled in the kernel.
264 .It Va natd_interface
266 This is the name of the public interface on which natd should run. It
271 The interface may be given as an interface name or as an IP address.
274 Additional natd flags should be placed here. The
278 flag is automatically added with the above
281 .\" ----- ipfilter_enable setting --------------------------------
282 .It Va ipfilter_enable
293 Typical usage will require putting
295 ipfilter_enable="YES"
313 can be enabled independently.
317 both require at least one of
327 options IPFILTER_DEFAULT_BLOCK
330 in the kernel configuration file is a good idea, too.
331 .\" ----- ipfilter_program setting ------------------------------
332 .It Va ipfilter_program
338 .\" ----- ipfilter_rules setting --------------------------------
339 .It Va ipfilter_rules
344 This variable contains the name of the filter rule definition file.
345 The file is expected to be readable for the
348 .\" ----- ipfilter_flags setting --------------------------------
349 .It Va ipfilter_flags
352 This variable contains flags passed to the
355 .\" ----- ipnat_enable setting ----------------------------------
365 network address translation.
368 for a detailed discussion.
369 .\" ----- ipnat_program setting ---------------------------------
376 .\" ----- ipnat_rules setting -----------------------------------
382 This variable contains the name of the file
383 holding the network address translation definition.
384 This file is expected to be readable for the
387 .\" ----- ipnat_flags setting -----------------------------------
391 This variable contains flags passed to the
394 .\" ----- ipmon_enable setting ----------------------------------
409 Setting this variable needs setting
416 for a detailed discussion.
417 .\" ----- ipmon_program setting ---------------------------------
424 .\" ----- ipmon_flags setting -----------------------------------
430 This variable contains flags passed to the
433 Another typical example would be
434 .Dq -D /var/log/ipflog
437 log directly to a file bypassing
440 .Pa /etc/newsyslog.conf
441 in such case like this:
443 /var/log/ipflog 640 10 100 * Z /var/run/ipmon.pid
445 .\" ----- ipfs_enable setting -----------------------------------
455 saving the filter and NAT state tables during shutdown
456 and reloading them during startup again.
457 Setting this variable needs setting
466 for a detailed discussion.
467 Note that if you are running with
473 because the raised securelevel will prevent
475 from saving the state tables at shutdown time.
476 .\" ----- ipfs_program setting ----------------------------------
483 .\" ----- ipfs_flags setting ------------------------------------
487 This variable contains flags passed to the
490 .\" ----- end of added ipf hook ---------------------------------
491 .It Va tcp_extensions
496 Setting this to NO disables certain TCP options as described by
502 might help remedy such problems with connections as randomly hanging
503 or other weird behavior.
504 Some network devices are known
505 to be broken with respect to these options.
511 Setting to YES will enable logging of connection attempts to ports that
512 have no listening socket on them.
518 Setting to NO will disable probing idle TCP connections to verify that the
519 peer is still up and reachable.
520 .It Va tcp_drop_synfin
525 Setting to YES will cause the kernel to ignore TCP frames that have both
526 the SYN and FIN flags set.
527 This prevents OS fingerprinting, but may
528 break some legitimate applications.
529 This option is only available if the
530 kernel was built with the
533 .It Va icmp_drop_redirect
538 Setting to YES will cause the kernel to ignore ICMP REDIRECT packets.
539 .It Va icmp_log_redirect
544 Setting to YES will cause the kernel to log ICMP REDIRECT packets.
546 the log messages are not rate-limited, so this option should only be used
547 for troubleshooting networks.
548 .It Va network_interfaces
550 Set to the list of network interfaces to configure on this host.
551 For example, if the only network devices in the system are the loopback
554 and a NIC using the ed0 driver,
558 .No ifconfig_ Ns Em interface
559 variable is also assumed to exist for each value of
561 It is also possible to add IP alias entires here in cases where
562 multiple IP addresses registered against a single interface
564 Assuming that the interface in question was ed0, it might look
567 ifconfig_ed0_alias0="inet 127.0.0.253 netmask 0xffffffff"
568 ifconfig_ed0_alias1="inet 127.0.0.254 netmask 0xffffffff"
573 .Va ifconfig_ Ns Ao Ar interface Ac Ns Va _alias Ns Aq Ar n
575 its contents are passed to
577 Execution stops at the first unsuccessful access, so if
578 something like this is present:
580 ifconfig_ed0_alias0="inet 127.0.0.251 netmask 0xffffffff"
581 ifconfig_ed0_alias1="inet 127.0.0.252 netmask 0xffffffff"
582 ifconfig_ed0_alias2="inet 127.0.0.253 netmask 0xffffffff"
583 ifconfig_ed0_alias4="inet 127.0.0.254 netmask 0xffffffff"
586 Then note that alias4 would
588 be added since the search would
589 stop with the missing alias3 entry.
591 It is possible to bring up an interface with DHCP by setting the
592 .No ifconfig_ Ns Em interface
595 For instance, to initialize the ed0 device via DHCP,
596 it is possible to use something like:
600 .It Va cloned_interfaces
602 Set to the list of clonable network interfaces to create on this host.
604 .Va cloned_interfaces
605 are automatically appended to
606 .Va network_interfaces
617 Mode in which to run the
619 daemon. Accepted modes are
625 See the manual for a full description.
630 enables packet aliasing.
631 Used in conjunction with
633 allows hosts on private network addresses access to the Internet using
634 this host as a network address translating router.
637 The name of the profile to use from
638 .Pa /etc/ppp/ppp.conf .
641 The name of the user under which ppp should be started.
643 default, ppp is started as
647 This option is used to specify a list of files that will override
649 .Pa /etc/defaults/rc.conf .
650 The files will be read in the order in which they are specified and should
651 include the full path to the file.
652 By default, the files specified are
655 .Pa /etc/rc.conf.local
661 will be run with the -y flag if the initial preen
662 of the filesystems fails.
663 .It Va background_fsck
667 the system will attempt to run
669 in the background where possible.
670 .It Va syslogd_enable
677 .It Va syslogd_program
682 .Pa /usr/sbin/syslogd ) .
689 these are the flags to pass to
703 .Pa /usr/sbin/inetd ) .
710 these are the flags to pass to
724 .Pa /usr/sbin/named ) .
731 these are the flags to pass to
733 .It Va kerberos_server_enable
737 to start a Kerberos authentication server
739 .It Va kadmind_server_enable
745 the Kerberos Administration Daemon); set to
748 .It Va kerberos_stash
752 instruct the Kerberos servers to use the stashed master key instead of
753 prompting for it (only if
754 .Va kerberos_server_enable
774 these are the flags to pass to it.
788 these are the flags to pass to it.
792 page for more information.
793 .It Va amd_map_program
796 the specified program is run to get the list of
801 maps are stored in NIS, one can set this to
814 will be updated at boot time to reflect the kernel release
819 .It Va nfs_client_enable
823 run the NFS client daemons at boot time.
824 .It Va nfs_access_cache
827 .Va nfs_client_enable
832 to disable NFS ACCESS RPC caching, or to the number of seconds for which
834 results should be cached.
835 A value of 2-10 seconds will substantially reduce network
836 traffic for many NFS operations.
837 .It Va nfs_server_enable
841 run the NFS server daemons at boot time.
842 .It Va nfs_server_flags
845 .Va nfs_server_enable
848 these are the flags to pass to the
851 .It Va single_mountd_enable
856 .Va nfs_server_enable
862 It is commonly needed to run CFS without real NFS used.
863 .It Va weak_mountd_authentication
867 allow services like PCNFSD to make non-privileged mount
873 provide NFS services only on a secure port.
874 .It Va nfs_bufpackets
876 If set to a number, indicates the number of packets worth of
877 socket buffer space to reserve on an NFS client. If set to
879 the kernel default is used (typically 4). Using a higher number may be
880 useful on gigabit networks to improve performance. The minimum value is
881 2 and the maximum is 64.
882 .It Va rpc_lockd_enable
886 and also an NFS server, run
889 .It Va rpc_statd_enable
893 and also an NFS server, run
896 .It Va portmap_program
901 .Pa /usr/sbin/rpcbind ) .
902 .It Va portmap_enable
908 service at boot time.
915 these are the flags to pass to the
931 these are the flags to pass to the
940 daemon at boot time to provide PPP over Ethernet services.
941 .It Va pppoed_ Ns Ar provider
944 listens to requests to this
950 argument of the same name.
953 Additional flags to pass to
955 .It Va pppoed_interface
957 The network interface to run pppoed on. This is mandatory when
967 service at boot time. This command is intended for networks of
968 machines where a consistent
970 for all hosts must be established. This is often useful in large NFS
971 environments where time stamps on files are expected to be consistent
979 these are the flags to pass to the
982 .It Va ntpdate_enable
986 run ntpdate at system startup. This command is intended to
987 synchronize the system clock only
989 from some standard reference. An option to set this up initially
990 (from a list of known servers) is also provided by the
991 .Pa /stand/sysinstall
992 program when the system is first installed.
993 .It Va ntpdate_program
998 .Pa /usr/sbin/ntpdate ) .
1005 these are the flags to pass to the
1007 command (typically a hostname).
1014 command at boot time.
1015 .It Va xntpd_program
1020 .Pa /usr/sbin/ntpd ) .
1027 these are the flags to pass to the
1030 .It Va nis_client_enable
1036 service at system boot time.
1037 .It Va nis_client_flags
1040 .Va nis_client_enable
1043 these are the flags to pass to the
1046 .It Va nis_ypset_enable
1052 daemon at system boot time.
1053 .It Va nis_ypset_flags
1056 .Va nis_ypset_enable
1059 these are the flags to pass to the
1062 .It Va nis_server_enable
1068 daemon at system boot time.
1069 .It Va nis_server_flags
1072 .Va nis_server_enable
1075 these are the flags to pass to the
1078 .It Va nis_ypxfrd_enable
1084 daemon at system boot time.
1085 .It Va nis_ypxfrd_flags
1088 .Va nis_ypxfrd_enable
1091 these are the flags to pass to the
1094 .It Va nis_yppasswdd_enable
1100 daemon at system boot time.
1101 .It Va nis_yppasswdd_flags
1104 .Va nis_yppasswdd_enable
1107 these are the flags to pass to the
1110 .It Va defaultrouter
1114 then create a default route to this host name or IP address
1115 (use an IP address if this router is also required to get to the
1117 .It Va static_routes
1119 Set to the list of static routes that are to be added at system
1120 boot time. If not set to
1122 then for each whitespace separated
1125 .No route_ Ns element
1126 variable is assumed to exist
1127 whose contents will later be passed to a
1130 .It Va gateway_enable
1134 then configure host to at as an IP router, e.g. to forward packets
1136 .It Va router_enable
1140 then run a routing daemon of some sort, based on the
1151 this is the name of the routing daemon to use.
1158 these are the flags to pass to the routing daemon.
1159 .It Va mrouted_enable
1163 then run the multicast routing daemon,
1165 .It Va mrouted_flags
1171 these are the flags to pass to the multicast routing daemon.
1172 .It Va ipxgateway_enable
1176 then enable the routing of IPX traffic.
1177 .It Va ipxrouted_enable
1183 daemon at system boot time.
1184 .It Va ipxrouted_flags
1187 .Va ipxrouted_enable
1190 these are the flags to pass to the
1197 then enable global proxy ARP.
1198 .It Va forward_sourceroute
1206 source routed packets are forwarded.
1207 .It Va accept_sourceroute
1211 then the system will accept source routed packets directed at it.
1218 daemon at system boot time.
1225 these are the flags to pass to the
1232 to enable the configuration of ATM interfaces at system boot time.
1233 For all of the ATM variables described below, please refer to the
1235 man page for further details on the available command parameters.
1236 Also refer to the files in
1237 .Pa /usr/share/examples/atm
1238 for more detailed configuration information.
1239 .It Va atm_netif_<intf>
1241 For the ATM physical interface
1243 this variable defines the name prefix and count for the ATM network interfaces to be created.
1244 The value will be passed as the parameters of an
1245 .Dq atm set netif Va <intf>
1247 .It Va atm_sigmgr_<intf>
1249 For the ATM physical interface
1251 this variable defines the ATM signalling manager to be used.
1252 The value will be passed as the parameters of an
1253 .Dq atm attach Va <intf>
1255 .It Va atm_prefix_<intf>
1257 For the ATM physical interface
1259 this variable defines the NSAP prefix for interfaces using a UNI signalling
1262 then the prefix will automatically be set via the
1264 daemon. Otherwise, the value will be passed as the parameters of an
1265 .Dq atm set prefix Va <intf>
1267 .It Va atm_macaddr_<intf>
1269 For the ATM physical interface
1271 this variable defines the MAC address for interfaces using a UNI signalling
1274 then the hardware MAC address contained in the ATM interface card will be used.
1275 Otherwise, the value will be passed as the parameters of an
1276 .Dq atm set mac Va <intf>
1278 .It Va atm_arpserver_<netif>
1280 For the ATM network interface
1282 this variable defines the ATM address for a host which is to provide ATMARP
1283 service. This variable is only applicable to interfaces using a UNI signalling
1286 then this host will become an ATMARP server.
1287 The value will be passed as the parameters of an
1288 .Dq atm set arpserver Va <netif>
1290 .It Va atm_scsparp_<netif>
1294 then SCSP/ATMARP service for the network interface
1296 will be initiated using the
1300 daemons. This variable is only applicable if
1302 .No atm_arpserver_ Ns Va <netif>
1308 Set to the list of ATM PVCs to be added at system
1309 boot time. For each whitespace separated
1312 .No atm_pvc_ Ns Em element
1313 variable is assumed to exist. The value of each of these variables
1314 will be passed as the parameters of an
1319 Set to the list of permanent ATM ARP entries to be added
1320 at system boot time. For each whitespace separated
1323 .No atm_arp_ Ns Em element
1324 variable is assumed to exist. The value of each of these variables
1325 will be passed as the parameters of an
1332 then no keymap is installed, otherwise the value is used to install
1334 .Pa /usr/share/syscons/keymaps/<value>.kbd
1337 The keyboard repeat speed. Set to
1343 if the default behavior is desired.
1348 attempt to program the function keys with the value. The value should
1349 be a single string of the form:
1350 .Qq Ar "<funkey_number> <new_value> [<funkey_number> <new_value>]..."
1353 Can be set to the value of
1359 to set the cursor behavior explicitly or choose the default behavior.
1364 then no screen map is installed, otherwise the value is used to install
1365 the screen map file in
1366 .Pa /usr/share/syscons/scrnmaps/<value> .
1371 then the default 8x16 font value is used for screen size requests, otherwise
1373 .Pa /usr/share/syscons/fonts/<value>
1379 then the default 8x14 font value is used for screen size requests, otherwise
1381 .Pa /usr/share/syscons/fonts/<value>
1387 then the default 8x8 font value is used for screen size requests, otherwise
1389 .Pa /usr/share/syscons/fonts/<value>
1395 then the default screen blanking interval is used, otherwise it is set
1403 this is the actual screen saver to use (blank, snake, daemon, etc).
1404 .It Va moused_enable
1410 daemon is started for doing cut/paste selection on the console.
1413 This is the protocol type of the mouse connected to this host.
1414 This variable must be set if
1421 is able to detect the appropriate mouse type automatically in many cases.
1422 Set this variable to
1424 to let the daemon detect it, or
1425 select one from the following list if the automatic detection fails.
1427 If the mouse is attached to the PS/2 mouse port, choose
1431 regardless of the brand and model of the mouse. Likewise, if the
1432 mouse is attached to the bus mouse port, choose
1436 All other protocols are for serial mice and will not work with
1437 the PS/2 and bus mice.
1438 If this is a USB mouse,
1440 is the only protocol type which will work.
1442 microsoft Microsoft mouse (serial)
1443 intellimouse Microsoft IntelliMouse (serial)
1444 mousesystems Mouse systems Corp mouse (serial)
1445 mmseries MM Series mouse (serial)
1446 logitech Logitech mouse (serial)
1447 busmouse A bus mouse
1448 mouseman Logitech MouseMan and TrackMan (serial)
1449 glidepoint ALPS GlidePoint (serial)
1450 thinkingmouse Kensignton ThinkingMouse (serial)
1452 mmhittab MM HitTablet (serial)
1453 x10mouseremote X10 MouseRemote (serial)
1454 versapad Interlink VersaPad (serial)
1457 Even if the mouse is not in the above list, it may be compatible
1458 with one in the list.
1459 Refer to the man page for
1461 for compatibility information.
1463 It should also be noted that while this is enabled, any
1464 other client of the mouse (such as an X server) should access
1465 the mouse through the virtual mouse device:
1467 and configure it as a sysmouse type mouse, since all
1468 mouse data is converted to this single canonical format when
1471 If the client program does not support the sysmouse type,
1472 specify the mousesystems type.
1473 It is the second preferred type.
1480 this is the actual port the mouse is on.
1483 for a COM1 serial mouse,
1487 for a bus mouse, for example.
1492 is set, these are the additional flags to pass to the
1495 .It Va mousechar_start
1499 then the default mouse cursor character range 0xd0-0xd3 is used,
1500 otherwise the range start is set
1505 Use if the default range is occupied in the language code table.
1506 .It Va allscreens_flags
1510 is run with these options for each of the virtual terminals
1514 will enable the mouse pointer on all virtual terminals
1519 .It Va allscreens_kbdflags
1523 is run with these options for each of the virtual terminals
1529 scrollback (history) buffer to 200 lines.
1536 daemon at system boot time.
1542 .Pa /usr/sbin/cron ) .
1549 these are the flags to pass to
1556 .Pa /usr/sbin/lpd ) .
1563 daemon at system boot time.
1570 these are the flags to pass to the
1573 .It Va sendmail_enable
1579 daemon at system boot time.
1580 .It Va sendmail_flags
1586 these are the flags to pass to the
1589 .It Va sendmail_outbound_enable
1600 .Va sendmail_outbound_flags
1602 .Va sendmail_flags .
1603 This is intended to allow local mail queue management
1604 for systems that do not offer a listening SMTP service.
1605 .It Va sendmail_outbound_flags
1612 .Va sendmail_outbound_enable
1615 then these are the flags to pass to the
1620 Indicates the device (usually a swap partition) to which a crash dump
1621 should be written in the event of a system crash.
1622 The value of this variable is passed as the argument to
1624 To disable crash dumps, set this variable to
1628 When the system reboots after a crash and a crash dump is found on the
1629 device specified by the
1633 will save that crash dump and a copy of the kernel to the directory
1637 The default value is
1639 .It Va enable_quotas
1643 to turn on user disk quotas on system startup via the
1650 to enable user disk quota checking via the
1653 .It Va accounting_enable
1657 to enable system accounting through the
1664 to enable iBCS2 (SCO) binary emulation at system initial boot
1666 .It Va ibcs2_loaders
1674 this specifies a list of additional iBCS2 loaders to enable.
1679 to enable Linux/ELF binary emulation at system initial
1685 to enable OSF/1 (Digital UNIX) binary emulation at system
1688 .It Va clear_tmp_enable
1695 .It Va ldconfig_paths
1697 Set to the list of shared library paths to use with
1701 will always be added first, so it need not appear in this list.
1702 .It Va ldconfig_insecure
1706 utility normally refuses to use directories
1707 which are writable by anyone except root.
1708 Set this variable to
1710 to disable that security check during system startup.
1711 .It Va kern_securelevel_enable
1715 to set the kernel security level at system startup.
1716 .It Va kern_securelevel
1718 The kernel security level to set at startup.
1719 The allowed range of
1721 ranges from -1 (the compile time default) to 3 (the
1724 for the list of possible security levels and their effect
1725 on system operation.
1732 at system boot time.
1735 Path to the SSH server program
1736 .Pa ( /usr/sbin/sshd
1744 at system boot time.
1751 these are the flags to pass to the
1754 .It Va unaligned_print
1758 then unaligned access warnings will not be printed.
1760 .\" ----- isdn settings ---------------------------------
1768 starts the isdn daemon
1770 at system boot time.
1776 Additional flags to pass to
1782 for certain tunable parameters).
1788 The terminal type of the output device when
1790 operates in fullscreen mode.
1791 .It Va isdn_screenflags
1796 The video mode for fullscreen mode (only for
1806 The output device for
1808 in fullscreen mode (or
1818 enables the ISDN protocol trace utility
1819 .Pa /usr/sbin/isdntrace
1820 at system boot time.
1821 .It Va isdn_traceflags
1824 .Dq -f /var/tmp/isdntrace0
1827 .Pa /usr/sbin/isdntrace .
1828 .\" -----------------------------------------------------
1831 .Bl -tag -width /etc/defaults/rc.conf -compact
1832 .It Pa /etc/defaults/rc.conf
1834 .It Pa /etc/rc.conf.local
1892 .An Jordan K. Hubbard .