Date: Thu, 02 Jun 2011 00:03:02 +0200 From: Bartosz Woronicz <bartosz.woronicz@korbank.pl> To: freebsd-stable@freebsd.org Subject: [CLOSED] Re: PF problem withpackets falling in block... Message-ID: <4DE6B716.9080600@korbank.pl> In-Reply-To: <4DE62DFD.2000204@korbank.pl> References: <4DE62DFD.2000204@korbank.pl>
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I put it in the wrong mailing list. Sorry for that. W dniu 01.06.2011 14:18, Bartosz Woronicz pisze: > I want to just block few classes that must be blocked. It seems like > it's partly working , but not all packets are accessible. And moreover > I cannot connect from outside. > What is wrong? My FreeBSD is 7.3-Stable > my wan interface is vlan300 and vlan352 is for an user. > The rule for blocking is: > rule 28/0 block in log on vlan352 from 79.110.199.192/27 to <mynet> > rule 29/0 block in log on vlan352 from 79.110.199.192/27 to !<mynet> > > I was trying also with: block in log on vlan352 from 79.110.199.192/27 > to any > instead of these 2 above > <mynet> contains adresses of my network: 79.110.192.0/20 > > Passing rules are: > pass quick from 79.110.199.199 to <mynet> keep state > pass in quick on vlan352 from 79.110.199.199 to !<mynet> tag > FROM79_110_199_199 queue 79_110_199_199D > pass out quick on vlan300 tagged FROM79_110_199_199 queue 79_110_199_199U > pass in quick on vlan300 from !<mynet> to 79.110.199.199 tag > TO79_110_199_199 queue 79_110_199_199U > pass out quick on vlan352 tagged TO79_110_199_199 queue 79_110_199_199D > > > But still some packets are dropped > > tcpdump: WARNING: pflog0: no IPv4 address assigned > tcpdump: listening on pflog0, link-type PFLOG (OpenBSD pflog file), > capture size 96 bytes > rule 29/0(match): block in on vlan352: (tos 0x0, ttl 64, id 54312, > offset 0, flags [DF], proto TCP (6), length 1500) 79.110.199.199.55073 > > 87.239.219.82.59291: tcp 1480 [bad hdr length 0 - too short, < 20] > rule 29/0(match): block in on vlan352: (tos 0x0, ttl 64, id 56948, > offset 0, flags [DF], proto TCP (6), length 1442) 79.110.199.199.55073 > > 80.229.149.80.55511: tcp 1422 [bad hdr length 0 - too short, < 20] > rule 29/0(match): block in on vlan352: (tos 0x0, ttl 64, id 8242, > offset 0, flags [DF], proto TCP (6), length 40) 79.110.199.199.55073 > > 85.222.56.47.56705: [|tcp] > rule 29/0(match): block in on vlan352: (tos 0x0, ttl 64, id 8243, > offset 0, flags [DF], proto TCP (6), length 52) 79.110.199.199.55073 > > 85.222.56.47.56705: [|tcp] > rule 29/0(match): block in on vlan352: (tos 0x0, ttl 64, id 8244, > offset 0, flags [DF], proto TCP (6), length 52) 79.110.199.199.55073 > > 85.222.56.47.56705: tcp 32 [bad hdr length 0 - too short, < 20] > rule 29/0(match): block in on vlan352: (tos 0x0, ttl 64, id 8245, > offset 0, flags [DF], proto TCP (6), length 52) 79.110.199.199.55073 > > 85.222.56.47.56705: [|tcp] > rule 29/0(match): block in on vlan352: (tos 0x0, ttl 64, id 8246, > offset 0, flags [DF], proto TCP (6), length 40) 79.110.199.199.55073 > > 85.222.56.47.56705: [|tcp] > rule 28/0(match): block in on vlan352: (tos 0x10, ttl 64, id 0, offset > 0, flags [DF], proto TCP (6), length 52) 79.110.199.199.55022 > > 79.110.194.135.43126: [|tcp] > rule 29/0(match): block in on vlan352: (tos 0x0, ttl 64, id 8247, > offset 0, flags [DF], proto TCP (6), length 52) 79.110.199.199.55073 > > 85.222.56.47.56705: tcp 32 [bad hdr length 0 - too short, < 20] > rule 29/0(match): block in on vlan352: (tos 0x0, ttl 64, id 54313, > offset 0, flags [DF], proto TCP (6), length 40) 79.110.199.199.55073 > > 87.239.219.82.59291: [|tcp] > rule 28/0(match): block in on vlan352: (tos 0x10, ttl 64, id 0, offset > 0, flags [DF], proto TCP (6), length 52) 79.110.199.199.55022 > > 79.110.194.135.43126: [|tcp] > rule 29/0(match): block in on vlan352: (tos 0x0, ttl 64, id 54314, > offset 0, flags [DF], proto TCP (6), length 52) 79.110.199.199.55073 > > 87.239.219.82.59291: [|tcp] > rule 29/0(match): block in on vlan352: (tos 0x0, ttl 64, id 8248, > offset 0, flags [DF], proto TCP (6), length 52) 79.110.199.199.55073 > > 85.222.56.47.56705: tcp 32 [bad hdr length 0 - too short, < 20] > rule 28/0(match): block in on vlan352: (tos 0x10, ttl 64, id 0, offset > 0, flags [DF], proto TCP (6), length 52) 79.110.199.199.55022 > > 79.110.194.135.43126: [|tcp] > rule 29/0(match): block in on vlan352: (tos 0x0, ttl 64, id 54315, > offset 0, flags [DF], proto TCP (6), length 52) 79.110.199.199.55073 > > 87.239.219.82.59291: [|tcp] > -- Pozdrawiam, Bartosz Woronicz, System Adminstrator, Korbank S.A. ul. Nabycińska 19 53-677 Wrocław NIP: 894-26-41-602 tel. 071-723-43-23 fax. 071-723-43-29
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