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Date:      Fri, 17 Oct 2008 09:10:05 +0700
From:      Kalpin Erlangga Silaen <kalpin@muliahost.com>
To:        freebsd-questions@freebsd.org
Subject:   IPFW UID match questions
Message-ID:  <48F7F3FD.5090209@muliahost.com>

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Dear all,

I tried to implement IPFW rules like below on my shell server:

/sbin/ipfw -q add 18600 allow tcp from any to personal_ip in
/sbin/ipfw -q add 18650 allow tcp from personal_ip to any out uid kalpin
/sbin/ipfw -q add 18660 allow tcp from personal_ip to any out uid root
/sbin/ipfw -q add 18670 allow tcp from personal_ip to any out uid nobody
/sbin/ipfw -q add 18700 deny tcp from personal_ip to any out

I hope with this rule, only user kalpin could be use the vhost
personal_ip. Below is brief description

line 1 will allow all tcp incoming packets into personal_ip
line 2 will allow tcp outgoing packets from personal_ip to anywhere if
match uid kalpin
line 3 same with line 2 if match uid root (to response identd request
from IRC Network if identd run as root)
line 4 same with line 3 if match uid nobody (to response identd request
from IRC Network if identd run as fall into nobody)
line 5 will deny all tcp outgoing packets

But, IRC Network still could not get ident response from my server. If I
removed line 5, then IRC Network get identd response. My identd process is:

root 63932 0.0 0.1 3136 1028 ?? Ss 1:46AM 0:00.03
/usr/local/sbin/oidentd -C /usr/local/etc/oidentd.conf

Is there anything else should be done to fix this problem?

Thank you


Kalpin Erlangga Silaen



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