122514Sdarrenrfilter-rule = [ insert ] action in-out [ options ] [ tos ] [ ttl ] 2145510Sdarrenr [ proto ] [ ip ] [ group ] [ tag ] [ pps ] . 322514Sdarrenr 422514Sdarrenrinsert = "@" decnumber . 5145510Sdarrenraction = block | "pass" | log | "count" | auth | call . 622514Sdarrenrin-out = "in" | "out" . 7145510Sdarrenroptions = [ log ] [ "quick" ] [ onif [ dup ] [ froute ] ] . 822514Sdarrenrtos = "tos" decnumber | "tos" hexnumber . 922514Sdarrenrttl = "ttl" decnumber . 1022514Sdarrenrproto = "proto" protocol . 1122514Sdarrenrip = srcdst [ flags ] [ with withopt ] [ icmp ] [ keep ] . 1231183Spetergroup = [ "head" decnumber ] [ "group" decnumber ] . 13145510Sdarrenrpps = "pps" decnumber . 1422514Sdarrenr 15145510Sdarrenronif = "on" interface-name [ "out-via" interface-name ] . 1692686Sdarrenrblock = "block" [ return-icmp[return-code] | "return-rst" ] . 1731183Speterauth = "auth" | "preauth" . 1853024Sguidolog = "log" [ "body" ] [ "first" ] [ "or-block" ] [ "level" loglevel ] . 19145510Sdarrenrtag = "tag" tagid . 20145510Sdarrenrcall = "call" [ "now" ] function-name "/" decnumber. 2122514Sdarrenrdup = "dup-to" interface-name[":"ipaddr] . 22145510Sdarrenrfroute = "fastroute" | "to" interface-name . 23145510Sdarrenrreplyto = "reply-to" interface-name [ ":" ipaddr ] . 2422514Sdarrenrprotocol = "tcp/udp" | "udp" | "tcp" | "icmp" | decnumber . 2522514Sdarrenrsrcdst = "all" | fromto . 2622514Sdarrenrfromto = "from" object "to" object . 2722514Sdarrenr 2892686Sdarrenrreturn-icmp = "return-icmp" | "return-icmp-as-dest" . 2953024Sguidologlevel = facility"."priority | priority . 3022514Sdarrenrobject = addr [ port-comp | port-range ] . 3122514Sdarrenraddr = "any" | nummask | host-name [ "mask" ipaddr | "mask" hexnumber ] . 3222514Sdarrenrport-comp = "port" compare port-num . 3322514Sdarrenrport-range = "port" port-num range port-num . 3422514Sdarrenrflags = "flags" flag { flag } [ "/" flag { flag } ] . 3522514Sdarrenrwith = "with" | "and" . 3622514Sdarrenricmp = "icmp-type" icmp-type [ "code" decnumber ] . 3722514Sdarrenrreturn-code = "("icmp-code")" . 38145510Sdarrenrkeep = "keep" "state" [ "limit" number ] | "keep" "frags" . 3922514Sdarrenr 4022514Sdarrenrnummask = host-name [ "/" decnumber ] . 4122514Sdarrenrhost-name = ipaddr | hostname | "any" . 4222514Sdarrenripaddr = host-num "." host-num "." host-num "." host-num . 4322514Sdarrenrhost-num = digit [ digit [ digit ] ] . 4422514Sdarrenrport-num = service-name | decnumber . 4522514Sdarrenr 46145510Sdarrenrwithopt = [ "not" | "no" ] opttype [ [ "," ] withopt ] . 47145510Sdarrenropttype = "ipopts" | "short" | "nat" | "bad-src" | "lowttl" | "frag" | 48145510Sdarrenr "mbcast" | "opt" ipopts . 4922514Sdarrenroptname = ipopts [ "," optname ] . 5022514Sdarrenripopts = optlist | "sec-class" [ secname ] . 5122514Sdarrenrsecname = seclvl [ "," secname ] . 5222514Sdarrenrseclvl = "unclass" | "confid" | "reserv-1" | "reserv-2" | "reserv-3" | 5322514Sdarrenr "reserv-4" | "secret" | "topsecret" . 5422514Sdarrenricmp-type = "unreach" | "echo" | "echorep" | "squench" | "redir" | 5522514Sdarrenr "timex" | "paramprob" | "timest" | "timestrep" | "inforeq" | 5631183Speter "inforep" | "maskreq" | "maskrep" | "routerad" | 5731183Speter "routersol" | decnumber . 5822514Sdarrenricmp-code = decumber | "net-unr" | "host-unr" | "proto-unr" | "port-unr" | 5922514Sdarrenr "needfrag" | "srcfail" | "net-unk" | "host-unk" | "isolate" | 6057093Sguido "net-prohib" | "host-prohib" | "net-tos" | "host-tos" | 6157093Sguido "filter-prohib" | "host-preced" | "cutoff-preced" . 6222514Sdarrenroptlist = "nop" | "rr" | "zsu" | "mtup" | "mtur" | "encode" | "ts" | "tr" | 6322514Sdarrenr "sec" | "lsrr" | "e-sec" | "cipso" | "satid" | "ssrr" | "addext" | 6422514Sdarrenr "visa" | "imitd" | "eip" | "finn" . 6553024Sguidofacility = "kern" | "user" | "mail" | "daemon" | "auth" | "syslog" | 6653024Sguido "lpr" | "news" | "uucp" | "cron" | "ftp" | "authpriv" | 6753024Sguido "audit" | "logalert" | "local0" | "local1" | "local2" | 6853024Sguido "local3" | "local4" | "local5" | "local6" | "local7" . 6953024Sguidopriority = "emerg" | "alert" | "crit" | "err" | "warn" | "notice" | 7053024Sguido "info" | "debug" . 7122514Sdarrenr 7222514Sdarrenrhexnumber = "0" "x" hexstring . 7322514Sdarrenrhexstring = hexdigit [ hexstring ] . 7422514Sdarrenrdecnumber = digit [ decnumber ] . 7522514Sdarrenr 7622514Sdarrenrcompare = "=" | "!=" | "<" | ">" | "<=" | ">=" | "eq" | "ne" | "lt" | "gt" | 7722514Sdarrenr "le" | "ge" . 7822514Sdarrenrrange = "<>" | "><" . 7922514Sdarrenrhexdigit = digit | "a" | "b" | "c" | "d" | "e" | "f" . 8022514Sdarrenrdigit = "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" . 81145510Sdarrenrflag = "F" | "S" | "R" | "P" | "A" | "U" | "C" | "W" . 82