CHANGES version history for ferm Max Kellermann Auke Kok v2.3.1 - 5 Jan 2017 - support netfilter match modules: * devgroup * geoip * socket - updated netfilter modules: * connlimit: add connlimit-upto, connlimit-saddr, connlimit-daddr * set: add return-nomatch, update-counters, update-subcounters, packets-eq, packets-lt, packets-gt, bytes-eq, bytes-lt, bytes-gt * SYNPROXY: rename "timestamp" to "timestamps" * TPROXY: add on-ip - @resolve returns IP addresses as-is - import-ferm: Perl 5.24 compatibility v2.3 - 30 Mar 2016 - rename "realgoto" to "goto" - new keyword @gotosubchain - new functions @defined, @glob - support netfilter match modules: * bpf * connlabel * cpu * dst * ipvs * rpfilter - support netfilter targets: * CHECKSUM * CONNMARK: support set-xmark, nfmask, and-mark, or-mark, xor-mark * DNPT * HMARK * IDLETIMER * LED * NFQUEUE: support queue-balance, queue-bypass, queue-cpu-fanout * RATEEST * SET: support timeout, exist * SNPT * TCPOPTSTRIP - recognize BROUTING as built-in chain (for ebtables) - check exit status of included shell commands - documentation * fixed wrongly used quotation marks in piped @include example v2.2 - 1 Jul 2013 - support netfilter modules: * CT * TEE - automatically apply @ipfilter on dual-stack config v2.1.2 - 17 Dec 2012 - support netfilter modules: * osf - updated netfilter modules: * hashlimit: allow list after hashlimit-mode - fix functions containing mixed domains - check function parameter types - allow policy QUEUE and RETURN - support setting policy of non-builtin chains v2.1.1 - 29 Jul 2012 - updated netfilter modules: * conntrack: support ctorigsrcport, ctorigdstport - new netfilter modules: * TPROXY target - allow folding @resolve value into a string v2.1 - 17 Jul 2011 - new functions @basename, @dirname, @ipfilter - add automatic variables $FILENAME, $LINE - updated netfilter modules: * pkg-type: support negation * set: "--match set" support for newer iptables - updated ebtables support: * use per-protocol options * add support for -p ARP --arp-gratuitous * support abbreviations in arguments * add support for matching IPv6 * add support for "among" match * add support for the "limit" match - honor --noflush in fast mode - discard previous specifications when @if fails - use the --domain argument as the default domain - keep track of line numbers within custom function calls v2.0.9 - 26 Feb 2011 - updated netfilter modules: * state: support negation * icmp: translate "icmp-type" to "icmpv6-type" in domain "ip6" - add functions @cat, @substr, @length - subchain names can now be expanded - import-ferm: support empty string parameters v2.0.8 - 4 Nov 2010 - added automatic variable $DIRNAME - implement confirmation/rollback for --shell --interactive - added the "type" parameter to @resolve() - new functions @eq, @ne, @not - updated netfilter modules: * ebtables/snat: support --snat-arp - add parameter --timeout for rollback v2.0.7 - 2 Jan 2010 - fix post and flush hooks with --lines - always prefix the negation operator - updated netfilter modules: * addrtype: support negation and --limit-iface-{in,out} * conntrack: support negation and --ctdir * owner: support negation and --socket-exists * policy: support negation v2.0.6 - 18 Jul 2009 - support negation in mark/connmark - support negation in set - added automatic variable $FILENAME - allow @subchain as the first keyword in a closure - don't allow semicolon after empty rule - enable @include to run a program - removed superfluous tokens from error message - create a new stack frame for @subchain (fixes $CHAIN) v2.0.5 - 28 Feb 2009 - detect double negation - improved detection of negated arrays - ignore dpkg's backup/temporary files on @include - renamed "hook" to "@hook" - disable "pre" and "post" hooks with --flush - added "flush" hooks v2.0.4 - 2 Dec 2008 - enable policy-only domains (no rules, just policy declarations) - don't list custom chains in --flush --fast mode v2.0.3 - 30 Sep 2008 - create chains and subchains even if they are empty - fix includes within a rule ("Missing semicolon...") - fix subchain in include ("Died at [...] line 1493") - "protocol" is an alias for "proto", to fix the keyword conflict with the "policy" module v2.0.2 - 26 Jul 2008 - allow duplicate specification of "table" and "chain", for better 1.3.x compatibility. Support for this will be removed in a later release. This does not apply to "domain". v2.0.1 - 24 Jul 2008 - generate "COMMIT" lines when flushing in fast mode - don't hard-code the path of iptables-save - install manpages in PREFIX/share/man v2.0 - 22 Jul 2008 - don't hard code built-in match modules - support for arptables and ebtables - removed support for deprecated ferm 1.1 syntax - removed the "set" and the "option" keyword - removed support for array-in-string - cleared the deprecated keyword translation table - removed TOS parameter shortcuts - don't default to policy if no action is specified - don't allow lower case built-in chain or policy names - removed --automod, --use, --clearall, --flushall, --flushchains, --createchains, --location, --debug, --verbose - comma in array is forbidden - removed "source" and "destination" as prefix for "addr" and "port" - don't allow match rules before and after "policy" - removed support for deprecated netfilter modules - dst - frag - iplimit - rewrote the internal rule storage - honor the order of match modules - import-ferm rewrite - use module data from ferm - write policy in chain block - do not generate implicit protocol modules - do not allow targets options after "jump" - fixed rollback when there is no iptables-save - enable fast mode by default, can be disabled with --slow v1.3.5 - 21 Jul 2008 - don't ignore unknown keywords after target (reported by Kai Sassmannshausen) - don't include hidden files (reported by Florian Reitmeir) v1.3.4 - 28 May 2008 - fixed single quote escaping - escape empty strings - reset module list after semicolon handler (reported by Ralph Oesker) - import-ferm: ignore the position of the negation marker; this allows us to parse invalid save files generated by iptables-save (reported by Andri Moell) - fixed REDIRECT example in the manual v1.3.3 - 22 Jan 2008 - updated netfilter modules: * recent: support --rsource, --rdest * time: support --monthday, --weekdays, --utc, --localtz * u32: suport negated --u3 * DNAT: support --random * MARK: support --set-xmark, --and-mark, --or-mark, --xor-mark * MASQUERADE: support --random * REDIRECT: support --random * SNAT: support --random * TOS: support --and-tos, --or-tos, --xor-tos - check if chain was specified before @subchain - suppress "not declared" warnings on empty custom chains v1.3.2 - 19 Dec 2007 - bugfix: emit "--proto" instead of "--protocol" for xt_policy "proto" - bugfix: handle array after DNAT/to-destination correctly - target options cannot have arrays by default - support netfilter modules: * ipv4options * string - support netfilter targets: * CLASSIFY (documentation) * CLUSTERIP * IPV4OPTSSTRIP * SAME (--random, documentation) v1.3.1 - 9 Dec 2007 - require IO::Handle, this fixes the interactive mode - configure test mode properly when running on microperl v1.3 - 6 Dec 2007 - reserve tokens starting with "@" as ferm keywords - implemented conditionals with @if/@else - added @include/@def/@subchain as alias to include/def/subchain - redirect STDOUT into STDERR --shell mode; this way, iptables warnings are separated from the ferm shell script output - microperl compatiblity: - don't require strict.pm / vars.pm - don't use IO::File - added simple Getopt::Long emulation - look for iptables in PATH - added function @resolve which resolves host names to IPv4 addresses - import-ferm supports ip6tables-save files - support "proto icmp" in the ip6 domain - make "goto" deprecated to remap it to "--goto" later - implemented "--goto" support, keyword is "realgoto" - don't default to policy if rule action is missing - support protocol modules * mh * udplite (sport, dport, mod multiport) - support netfilter modules: * connbytes * connlimit * u32 - support netfilter targets: * CONNSECMARK * SECMARK - abort when there is an unrecognized command line option (reported by Han Holl) - import-ferm: don't generate NOP action before a block - import-ferm: quote array values - quote the ampersand v1.2.5 - 14 Oct 2007 - make --flush do something in fast mode (reported by Hans-Georg Bork) - fix automatic protocol modules when used in an expanded array (reported by Ralph Oesker) v1.2.4 - 24 May 2007 - support netfilter modules: * hashlimit * ipset (patch by Martin Schuster) - ignore empty lines in backticks result (reported by Martin Klozik) - the match module for protocol "icmpv6" is named "icmp6" - implemented basic hooks (suggested by Joerg Jaspert) - documentation: * targets CONNMARK v1.2.3 - 14 Feb 2007 - subchains may be named - don't copy module references to subchain (patch by Alex Metelka) - override variables on the command line with "--def" - auto-load modules only when their parameters are used - documentation: * targets MIRROR, NETMAP, NFQUEUE, NOTRACK, QUEUE v1.2.2 - 15 Nov 2006 - documentation: * warn against using iptables 1.2 with import-ferm * extended the transition section in the manpage - support netfilter modules: account - bugfix: don't clear variable value when used as parameter in multiport/destination-ports (reported by Bill Goudie) v1.2.1 - 25 Sep 2006 - bugfix: reset domains after all rules were parsed and don't forget to reset a table; this bug only affects users who run ferm on a remote machine - reset policy on all guessed built-in chains if no authoritative information about built-in chains is available - support netfilter modules: condition, fuzzy, hbh, hl, ipv6header, rt, quota, HL - extended module support * ah now supports the IPv6 options - added missing documentation * target ECN * match modules: dst, eui64, frag - disabled array after ttl-lt, ttl-gt - allow "length", "physdev", "tos" negation - translate sports, dports to source-ports, destination-ports in import-ferm - added the "--remote" option v1.2 - 13 Sep 2006 - import-ferm runs iptables-save if no input file is provided v1.2beta2 - 9 Sep 2006 - added --flush - added --shell which generates a shell script - don't check available netfilter modules - read iptables-save in initialize_netfilter() - option --location is deprecated, ferm now calls /sbin/iptables - whitespace fix in import-ferm - allow late chain/table specification again - set a second alarm in the confirmation dialog - enable rollback feature even in non-interactive mode v1.2beta1 - 28 Aug 2006 - perl strict mode - removed support for ipfwadm and ipchains - get a list of netfilter table names from /proc/net/ip_tables_names - error messages go to STDERR - full support for the match extensions: recent, comment, conntrack, addrtype, ah, owner, time, dscp, ecn, helper, iprange, iplimit, length, multiport, physdev, policy, realm, tcpmss, dst, frag - full support for the targets: BALANCE, CLASSIFY, CONNMARK, NETMAP, ROUTE, SNAT, TARPIT, NFQUEUE, SAME, DSCP - support the protocols: dccp, sctp - implemented variables and functions with 'def' * variables and functions are local to their containing block - stricter syntax checks, e.g.: * some built-in targets must be uppercase * only one target is allowed * target parameters are only recognized after the target name, protocol parameters only after the protocol match etc. * referenced variables must exist * list item negation is not possible * only ACCEPT and DROP are allowed as policy * tables and chains must be specified first - deprecated syntax: * using a policy as default target for a rule * target MASQ, use MASQUERADE instead * lower-case built-in chain names and targets * lists must be specified with parantheses and no commas (old syntax is deprecated, but still supported) * variables declared with 'set' and referenced with '%NAME' * many shortcuts like 'mac' and 'tosrc' * shortcuts without the dash like 'tcpflags' ('tcp-flags') * "option iptables"; only iptables is supported * source/destination * option automod * policy within a rule declaration - fixed the double-module bug - show filename and line number in error message - implemented the 'include' command - more shortcuts for command line options - better set-tos parameter parser - reimplemented backticks - reimplemented tokenizer and parser - escape shell parameters - warn about unused custom chains - ignore empty rules - options --clearall, --createchains are implied and deprecated - options --debug and --verbose are deprecated - reset all policies to ACCEPT - variables expansion happens within double quotes - implemented automatic variables: $TABLE, $CHAIN - IPv6/ip6tables support - raw table support - print line number when iptables reports an error - write error messages to STDERR - replaced the old samples with new ones - check which match and target modules are available - generate output iptables-save format when --fast is specified - semi-automatic sub chains with the 'subchain' keyword - support tcp-flags negation - added interactive mode v1.1 - 5 May 2003 - Removed 'mark' as possible target due to nameclash - Fixed typo in tos values with missing space - Added support for shell escapes - Updated manual page - Fixed bug with ! before variable lists - Added support for multiple variables inside a value - Changed variable character from '$' to '%' to allow system variables - Split up the pod stuff from the ferm source - Fixed word splitter to more a serious approach - Removed internal proxy variable, replaced with 'to' and 'toports' for clearity - Removed the 'relaxed' option, for it wasn't used at it's potential (once) - Added location option for the meek - Have ferm prescan input to look for the kernel program and location - Modified $(DOCDIR) to /usr/share/doc/ferm - Added debug (--debug or -d) parameter for even more output - Added --length,ttl, ttl[set|inc|dec] and ttl-[eq|lt|gt], --[every|counter|start|packet], --average, --pkt-type, --string --time[start|stop] and --days, ip-limit-[above|mask] --psd-[weight-threshold|delay-threshold|[lo|hi]-ports-weight] --to-[source|ports|destination], --set-ftos - Added BALANCE, FTOS, SAME, TCPMSS targets and more - Fixed bug on log/goto combination (missing space) -debian bugs - Allow lists in set statements -debian bugs - Added several patches from misc sources (thanks everyone) - Cleaned up order of builtin targets (now alphabetically ordered) v1.0pl8 - 13 july 2001 - Fixed nonexistent parameter values for log-[ip|tcp]-... - Made keyword pattern matching strict, better for finding typo's - Added NOP action (for match-counting) - Added option automodule for automaticly loading correct modules - Fixed -m for mark in iptables mixo - Fixed relaxed matching tos values, still relaxed now though - Fixed mark missing as normal target - Added variable support - Updated manual page partly v1.0pl7 - 21 may 2001 - Added support for multiple modules v1.0pl6 - 19 may 2001 - Fixed wrongly flushing of chains - Fixed bug which infected policies already set - Updated manual to distinguish between 'log' and 'LOG' - Fixed lower case mismatching targets due to faulty substring expression matching v1.0pl5 - 16 may 2001 - Fixed policy keyword bug - Added consistency check for missing semicolons before section closing - Fixed flushall target for multiple tables - Reworked policy system to allow multiple policy settings for single chains - Changed syntax to allow "--state A,B", adapted "--tcp-flags" syntax to do exactly the same (see manual) v1.0pl4 - 11 may 2001 - Fixed order of TOS targets/params for iptables - Added correct flushing in combination with policy-setting only - Stripped trailing spaces on rule - Fixed a small grammar error in description - Removed SNAT and DNAT as valid policy targets - Added QUEUE, MARK, MIRROR and RETURN as valid (policy) targets - Added PRE/POSTROUTING chains as valid for policy - Added set-mark parameter, moved 'mark' in ipchains to 'setmark' - Added MASQUERADE syntax for iptables v1.0pl3 - 9 may 2001 - Fixed DENY rule appearing uncapitalized v1.0pl2 - 8 may 2001 - Added support for SNAT and DNAT targets - Added support for the tcp-flags option v1.0pl1 - 3 May 2001 - Fixed redirection to host vs port in iptables section - Fixed chain clearing in all tables - Switched to Makefiles for install & uninstall script v1.0 - 2 May 2001 - Fixed iptables addr/port combination errors (iptables lacks ipchains shorthand method for this) - Removed 'reverse' for iptables (misses capability) - Added filter and nat cleaning for 'clearall' option - Major update on chain-administration in iptables v0.0.18 - 18 Apr 2001 - Fixed two minor bugs (typo/parm ordering) - Added ttl-* options for iptables - Fixed log-tcp-*, which don't want parameters - Return of default kernel program, now checked for at first rule generation moment. Default is ipchains (again) - Added PRE- and POSTROUTING targets for iptables v0.0.17 - 19 Feb 2001 - Added better literal string handling enclosed in quotes - Added "module" parameter for iptables - Added "LOG" target for iptables, the "log" option still works the old way, so "proto tcp log ACCEPT;" works fine - Fixed table parameter in clearing/policy/creation of chains - Added a special iptables example - Added support for "! syn" and "! fragment" syntax - Fixed fragment parameter bug v0.0.16 - 12 Feb 2001 - Fixed default ipchains option- removed the default kernel interface program - Fixed 5 iptables/ipchains copy-paste typo's v0.0.15 - 7 Feb 2001 - Added possibility of "" parameters including spaces and special characters, handy for 'log-prefix' - Fixed minor 'rejectt' bug - Added a realistic ferm config example - Fixed iptables log error (Klaus Lichtenwalder) v0.0.14 - 28 Jan 2001 - Fixed tos and set-tos parameter switches for iptables - Added install script - Updated manual page to reflect changes in 0.0.13 - Fixed flushing/clearing in iptables v0.0.13 - 10 Jan 2001 - Improved iptables support: the following parameters: * table, out-interface, tcp-option, mac-source, limit, limit-burst, all owner-parameters, state, logging options, reject-with - Changed 'tos' into 'settos' to allow 'tos' matching in iptables - Implemented the ! operator, partly by John Auer v0.0.12 - 8 Jan 2001 - Fixed an incredibly stupid bug created in 0.0.11 v0.0.11 - 5 Jan 2001 - Fixed a lot of silly bugs with the policy system (uc/lc, wrong targets) - Allows empty files v0.0.10 - 4 Jan 2001 - Policy can now be specified as a single statement, like "chain input policy ACCEPT;", allowing policies to be shut down and opened in the process of loading - Added the 'reverse' option - Fixed fqdn specification (Yannick Le Briquer) - Package contains man page in html v0.0.9 - 14 Dec 2000 - REDIRECT option corrected, you can now specify the port number that you are redirecting to (D. Bidwell) - Added basic iptables support - fixed typo error between 's' and 'd' for portspec - Updated manual page v0.0.8 - 12 Dec 2000 - initial release, features: * ipchains support * ipfwadm support * complete man page * examples