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Date:      Sun, 25 Feb 2007 13:40:09 +0100
From:      Max Laier <max@love2party.net>
To:        freebsd-pf@freebsd.org, Sergey Klusov <snklusov@gmail.com>
Subject:   Re: anchor
Message-ID:  <200702251340.17037.max@love2party.net>
In-Reply-To: <913541362.20070220170645@gmail.com>
References:  <913541362.20070220170645@gmail.com>

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On Tuesday 20 February 2007 13:06, Sergey Klusov wrote:
> Hello,
> i'm trying to use anchors on freebsd6.0 and can't get it working
> right.
>
> Here is my example:
>
> pfctl -f - <<EOM
> block all
> anchor anch
> EOM
>
> pfctl -a anch/s1 -f - <<EOM
> pass quick proto tcp from any to any port 25
> EOM
>
> and it doesn't work at all
> no traffic is allowed (can't telnet to remote host, not on 25-th port,
> not on any other)
> if i use 'anchor anch/*' instead of 'anchor anch' then there is ANY
> traffic allowed, not only on 25-th port
>
> tried to use 'anch:s1' instead of 'anch/s1' - same effect.
>
> What do i do wrong?

The rule you are loading into the anchor does not do what you think it=20
does.  It will allow the packet from your local telnet to a remote host's=20
port 25, but the reply won't be let in as the rule doesn't keep state and=20
your telnet will be listening on a port other than 25.

=2D-=20
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