Date: Tue, 02 May 2017 11:31:45 +0430 From: "Babak Farrokhi" <farrokhi@FreeBSD.org> To: Max <maximos@als.nnov.ru> Cc: freebsd-pf@freebsd.org Subject: Re: Similar entries in source tracking table Message-ID: <C22C7217-CE09-4C3B-89CC-8EA52E892C38@FreeBSD.org> In-Reply-To: <45a09f51-7b96-f7c1-e53b-9421fd1befbd@als.nnov.ru> References: <5923A420-6BE6-4758-AE37-89C019F179E5@FreeBSD.org> <45a09f51-7b96-f7c1-e53b-9421fd1befbd@als.nnov.ru>
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[-- Attachment #1 --] Hello, Here it is: # pfctl -vvsS No ALTQ support in kernel ALTQ related functions disabled 192.168.232.1 -> 192.168.0.104 ( states 0, connections 0, rate 0.0/0s ) age 00:00:53, expires in 00:59:52, 6 pkts, 504 bytes, nat rule 0 192.168.232.1 -> 192.168.0.104 ( states 0, connections 0, rate 0.0/0s ) age 00:01:21, expires in 00:59:20, 16 pkts, 1344 bytes, nat rule 0 # pfctl -vvss No ALTQ support in kernel ALTQ related functions disabled I am running 11-STABLE r317643. Please note that this is only reproducible when you reload your pf configuration and tables. — Babak On 2 May 2017, at 10:41, Max wrote: > Hello, > Can you show "pfctl -vsS" output? And what version of FreeBSD are you running? > > > 01.05.2017 17:59, Babak Farrokhi пишет: >> Hello, >> >> I was running an experiment with pf in which I encountered an unusual case. >> >> In a nat setup, is this okay to have multiple similar entries in source tracking table? >> >> # pfctl -sS >> 192.168.232.1 -> 192.168.0.104 ( states 0, connections 0, rate 0.0/0s ) >> 192.168.232.1 -> 192.168.0.104 ( states 0, connections 0, rate 0.0/0s ) >> 192.168.232.1 -> 192.168.0.104 ( states 0, connections 0, rate 0.0/0s ) >> >> There are actually three similar binding stuck in source tracking table. >> vmstat output also confirms separate memory allocation for three entries in >> source tracking table: >> >> # vmstat -z | egrep 'ITEM|^pf' >> ITEM SIZE LIMIT USED FREE REQ FAIL SLEEP >> pf mtags: 48, 0, 0, 0, 0, 0, 0 >> pf states: 296, 8000005, 0, 1313, 2279, 0, 0 >> pf state keys: 88, 0, 0, 2655, 4558, 0, 0 >> pf source nodes: 136, 1500025, 3, 142, 7, 0, 0 >> pf table entries: 160, 800000, 4, 121, 47, 0, 0 >> pf table counters: 64, 0, 0, 0, 0, 0, 0 >> pf frags: 112, 0, 0, 0, 0, 0, 0 >> pf frag entries: 40, 100000, 0, 0, 0, 0, 0 >> pf state scrubs: 40, 0, 0, 0, 0, 0, 0 >> >> >> I can reproduce this behavior by reloading pf.conf and running traffic through >> the box and get a new entry added to source tracking table. >> >> Here is the nat rule: >> >> # pfctl -vsn >> nat on em0 inet from <internal-net> to any -> <external-net> round-robin sticky-address >> [ Evaluations: 368 Packets: 50 Bytes: 2084 States: 0 ] >> [ Inserted: uid 0 pid 6418 State Creations: 28 ] >> >> and timers: >> >> # pfctl -st >> tcp.first 10s >> tcp.opening 10s >> tcp.established 4200s >> tcp.closing 10s >> tcp.finwait 15s >> tcp.closed 10s >> tcp.tsdiff 30s >> udp.first 60s >> udp.single 30s >> udp.multiple 60s >> icmp.first 20s >> icmp.error 10s >> other.first 60s >> other.single 30s >> other.multiple 60s >> frag 30s >> interval 30s >> adaptive.start 0 states >> adaptive.end 0 states >> src.track 3600s >> >> Any ideas if this behavior is expected? >> >> — >> Babak > > _______________________________________________ > freebsd-pf@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-pf > To unsubscribe, send any mail to "freebsd-pf-unsubscribe@freebsd.org" [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- iQJ8BAEBCABmBQJZCC7ZXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXRGMDgxNUY4ODYxQkYyREVBRjI2MUU5QzE2 QjI2N0FEODVENjMyRTlBAAoJEGsmethdYy6aw1QP/RkVIASAvKKmaUp+n5rPNs7l DXhi6PPp0IGrUb5bjwselgUucze/bt7S4yRgQIx2kgJs15Ao4M/3Bx63HveqZQRF ESf9AlwRsbh6DTp5fda33i4S4opXSisZdXf+5rhFBegfl85Mg8HoHP0XqghBIHsF A28F0ucEUBxvN+xNZQ/3XFE7HFQh16xjfvDtBF+gW8l6ECLLjKwB5uyrLLQqZYVk F7mERMbuoFDXaZSMEtxXTWPzNwJzTRgxsHd7xW42fVR6DIxosaWkSg9q4TaQIXI8 671tbjqKyAvZJNnDE+Jkh3+Bji3f2U6hZ4LzbRRJL572LVBv/lhuCAVo0+oUwqzO kwM2lRvbJmjHMUwqv2Plgx7vMFXcUASSOHeKHsWTf4yUlm4Sh3OSauXtLHLxW26R LHFAkQxmoRJbQcKUzOdtlFta9+/u2VfhVvZ+QYqH7OTIOZ3shbrXdlZHO4SgmaTJ lLzINMH8okCy1Sov3Nr9tvHF6M9vuypnkA1pH9Tl/buYtSN/dcy4rXK8MJ/uSIV8 6+g8SpaKtY2PB1Oa3oY5JusBE7VD2/PXNnNU8MsDADPWk2TqFSyp0seGUYJYUFW1 QxLGFQvmXmGu0zmnJqC2JMfTpJ/rDiKSA5FuJW6oJ9QXo9vTRxGasp8I5CKVCMRL 0O55hakSHrYrnF/jwkoW =bhE3 -----END PGP SIGNATURE-----help
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