Date: Wed, 16 Apr 2008 20:22:04 +0300 From: Roman Otsaljuk <romzes@upstar.com.ua> To: Erik Osterholm <freebsd-lists-erik@erikosterholm.org> Cc: freebsd-questions@freebsd.org Subject: Re: FreeBSD7 + pf + ipsec Message-ID: <480635BC.1010000@upstar.com.ua> In-Reply-To: <20080416150003.GA16773@aleph.cepheid.org> References: <4805C08A.1060308@upstar.com.ua> <1208338114.7003.1.camel@norman-laptop> <4805CF37.70008@upstar.com.ua> <20080416150003.GA16773@aleph.cepheid.org>
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Erik Osterholm ?????: > On Wed, Apr 16, 2008 at 01:04:39PM +0300, Roman Otsaljuk wrote: > >> Norman Maurer ?????: >> >>> Am Mittwoch, den 16.04.2008, 12:02 +0300 schrieb Roman Otsaljuk: >>> >>> >>>> hi all. >>>> i have two localnets linked over ipsec: >>>> >>>> http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/ipsec.html >>>> >>>> network schema: >>>> >>>> 192.168.0.0/24 <---> [192.168.0.12=freebsd=2.2.2.2] <--inet--> >>>> [1.1.1.1=freebsd1=10.31.0.5] <---->10.31.0.5/26 >>>> >>>> on both points was 6.2, firewall - pf. >>>> after updating to 7.0 vpn doesn't work: >>>> 0) pings go normal >>>> 0) tcp packets go too, but third packet with R flag: >>>> from 192.168.0.12 try: ssh 10.31.0.42, on second console: >>>> mail# tcpdump -ni gif0 >>>> tcpdump: verbose output suppressed, use -v or -vv for full protocol decode >>>> listening on gif0, link-type NULL (BSD loopback), capture size 68 bytes >>>> 10:49:43.912469 IP 192.168.0.12.63996 > 10.31.0.42.22: S 1756351354:1756351354(0) win 65535 <mss 1240,nop,wscale 3,sackOK,timestamp 51087105 0> >>>> 10:49:43.936245 IP 217.20.174.35 > 195.43.43.238: IP 10.31.0.42.22 > 192.168.0.12.63996: S 4244314344:4244314344(0) ack 1756351355 win 65535 <mss 1460,[|tcp]> (ipip-proto-4) >>>> 10:49:43.936360 IP 192.168.0.12.63996 > 10.31.0.42.22: R 1318200353:1318200353(0) win 0 >>>> >>>> 0) adding the first rule (pass quick all) on both - without changes; >>>> 0) downing pf: in localnet, in wich pf downed - all good. >>>> >>>> >>>> any ideas? >>>> >>>> >>>> p.s. the same if IPsec replaced by vpnd-------- >>>> sorry my bad English >>>> >>>> >>> Freebsd 7.0 use the "new" ipsec implementation (IPSEC_FAST) so you need >>> to allow ipencap protocol too.. >>> >>> Cheers >>> Norman >>> >>> >>> >>> >>> >> is not rule "pass quick all" allows ipencap? >> > > Try specifying it specifically. I seem to recall that only certain > protocols are passed unless specificially specified, though I can't > find documentation on that. > > Erik > > > rules: vpn_if=gif0 pass quick on $vpn_if modulate state pass in quick proto {esp, ipencap} from 1.1.1.1 to $ext_if modulate state was in my pf.conf on 6.2 and on 7.0. I have not changed pf.conf with upgrating.. (except "pass quick all" during trying u?derstand problem) But I think problem not in ipencap (because icmp going good)..
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