UDP weirdness

[Ansar Mohammed]

Ok, so adding the line as you suggested worked. 
Thanks Kevin.

But why do I need to have both entries in for 

pass in proto udp from any to any port 53
pass out proto udp from any to any port 53

what makes UDP so special?


> -----Original Message-----
> From: Kevin K [mailto:kkutzko at teksavvy.com]
> Sent: May 7, 2008 1:54 PM
> To: 'Ansar Mohammed'; freebsd-pf at freebsd.org
> Subject: RE: UDP weirdness
> 
> Try pass out proto udp from any to any port 53
> 
> > -----Original Message-----
> > From: owner-freebsd-pf at freebsd.org [mailto:owner-freebsd-
> > pf at freebsd.org] On Behalf Of Ansar Mohammed
> > Sent: Wednesday, May 07, 2008 1:34 PM
> > To: freebsd-pf at freebsd.org
> > Subject: UDP weirdness
> >
> > I have a very simple configuration yet I am bemused as to what I am
> > doing
> > wrong.
> >
> >
> > Windows 2003 	<- FreeBSD-PF -> 			Windows 2003
> > 192.168.3.2		192.168.3.1 192.168.2.2		192.168.2.130
> > Here are my rules
> >
> >
> > ext_if="le0"
> > int_if="le1"
> > int_net="192.168.3.0/24"
> > ext_net="192.168.2.0/24"
> > int_addr="192.168.3.1"
> > ext_addr="192.168.2.2"
> > scrub on $ext_if all reassemble tcp
> > scrub on $int_if all reassemble tcp
> > block in log all
> > pass in  proto icmp from any to any
> > pass in proto udp from any to any port 53
> > pass in on $ext_if inet proto tcp from any to any port 3389
> >
> >
> > DNS traffic is allowed though but the return packet gets blocked. Can
> > anyone
> > explain why?
> > This is true on ALL UDP traffic TCP traffic works well
> >
> > Pflog message:
> >
> > 065276 rule 0/0(match): block in on le1: 192.168.3.2.53 >
> > 192.168.2.130.3837: [|domain]
> >
> >
> >
> >
> > _______________________________________________
> > freebsd-pf at freebsd.org mailing list
> > http://lists.freebsd.org/mailman/listinfo/freebsd-pf
> > To unsubscribe, send any mail to "freebsd-pf-unsubscribe at freebsd.org"