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Date:      Wed, 28 Jul 2004 12:18:36 -0400 (EDT)
From:      "Steve Bertrand" <iaccounts@ibctech.ca>
To:        dgw@liwest.at
Cc:        questions@freebsd.org
Subject:   Re: Problems after IP change
Message-ID:  <3983.209.167.16.15.1091031516.squirrel@209.167.16.15>
In-Reply-To: <200407281705.42474.dgw@liwest.at>
References:  <200407281452.00859.dgw@liwest.at> <200407281637.23563.dgw@liwest.at> <3816.209.167.16.15.1091029989.squirrel@209.167.16.15> <200407281705.42474.dgw@liwest.at>

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> On Wednesday 28 July 2004 15:53, Steve Bertrand wrote:
>> >> I figured so...what happens if you add 'keep-state' to rules 20000,
>> >> 20002
>> >> and 20003?
>> >
>> > Nothing.
>> > BTW, here we have the problem: The initial SYN packet isn't matched by
>> > rule
>> > 11700 (setup keep-state). Setup means the SYN flag is set, right?
>>
>> AFAIK, setup means the SYN bit MUST be set. Try these rules:
>> > add 01900 deny log tcp from any to any in established
>>
>> add 2000 allow log all from any to any in via rl1 keep-state
>> add 2002 allow log all from any to any out via rl0 keep-state
>>
>> > So why
>> > is
>> > it not matched? If I remove the "setup" keyword to match all outgoing
>> > packets, the SYN/ACK from the server is still denied by rule 01900.
>>
>> I'll go over the ruleset again here and see if I can find a misplaced
>> 'out' or 'in'.
>
> Now it is getting funny. I played around with the ruleset, adding and
> removing
> count log rules. Suddenly it worked. I removed all extra count log rules,
> and
> compared the resulting ruleset file with the backup I made before. Nothing
> changed! Was that a bug?

I'd like to see the difference. Could you post this output? (The contents
of rules.patch).

# diff orig_rules_file new_rules_file > rules.patch

Steve

>
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