Date: Tue, 04 Nov 2008 11:23:08 +0100 From: Matthias Kellermann <mk@adminlife.net> To: Jeremy Chadwick <koitsu@FreeBSD.org> Cc: freebsd-pf@freebsd.org Subject: Re: rdr rule does not work (bad hdr length) Message-ID: <4910228C.3020400@adminlife.net> In-Reply-To: <20081104095748.GA44045@icarus.home.lan> References: <491012AE.7000409@adminlife.net> <20081104093800.GA43676@icarus.home.lan> <49101B48.2060704@adminlife.net> <20081104095748.GA44045@icarus.home.lan>
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Jeremy Chadwick wrote: > Try changing "synproxy state" to "keep state", and see if you have the > same problem. Note that you may need to reset your state table after > changing this rule (see pfctl -k). Ok, I tried that. Here is the result: # tcpdump -s 256 -netttvvi pflog0 000000 rule 0/0(match): pass in on sis0: (tos 0x10, ttl 64, id 35529, offset 0, flags [DF], proto TCP (6), length 60) 192.168.0.51.38439 > 192.168.0.10.23: S, cksum 0x5fae (correct), 3300997001:3300997001(0) win 5840 <mss 1460,sackOK,timestamp 2866496 0,nop,wscale 6> 2. 998190 rule 0/0(match): pass in on sis0: (tos 0x10, ttl 64, id 35530, offset 0, flags [DF], proto TCP (6), length 60) 192.168.0.51.38439 > 192.168.0.10.23: S, cksum 0x5cc0 (correct), 3300997001:3300997001(0) win 5840 <mss 1460,sackOK,timestamp 2867246 0,nop,wscale 6> 6. 000214 rule 0/0(match): pass in on sis0: (tos 0x10, ttl 64, id 35531, offset 0, flags [DF], proto TCP (6), length 60) 192.168.0.51.38439 > 192.168.0.10.23: S, cksum 0x56e4 (correct), 3300997001:3300997001(0) win 5840 <mss 1460,sackOK,timestamp 2868746 0,nop,wscale 6> 12. 000425 rule 0/0(match): pass in on sis0: (tos 0x10, ttl 64, id 35532, offset 0, flags [DF], proto TCP (6), length 60) 192.168.0.51.38439 > 192.168.0.10.23: S, cksum 0x4b2c (correct), 3300997001:3300997001(0) win 5840 <mss 1460,sackOK,timestamp 2871746 0,nop,wscale 6 If I stop the connection attempts from the client the tcpdump output stops too. Regards, Matthias
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