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Date:      Thu, 10 Aug 2000 08:49:19 -0700
From:      "Crist J . Clark" <cjclark@reflexnet.net>
To:        Chris Silva <bitsurfer@mediaone.net>
Cc:        FreeBSD-IPFW@FreeBSD.ORG
Subject:   Re: IRC identing from client through FBSD firewall.
Message-ID:  <20000810084919.E5405@149.211.6.64.reflexcom.com>
In-Reply-To: <KCELIGPCPGAIDMNBHMOGCEFCDBAA.bitsurfer@mediaone.net>; from bitsurfer@mediaone.net on Thu, Aug 10, 2000 at 06:20:22AM -0500
References:  <KCELIGPCPGAIDMNBHMOGCEFCDBAA.bitsurfer@mediaone.net>

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On Thu, Aug 10, 2000 at 06:20:22AM -0500, Chris Silva wrote:
> When I access IRC via a windows box on my internal network, going trough a
> cable modem, I get this error:
> 
> natd[162]: failed to write packet back (Permission denied)
>
> My main concern, it to use IRC on the intranet boxen and have auth work - so
> I can access EFNet and DALNet.
> 
> This happens when identd is access.  I can get out doing everything I need
> to, but I just cant get identd to work.

[snip]

> ------------------ ipfw list
> 00050 divert 8668 ip from any to any via xl0
> 00100 allow ip from any to any via lo0
> 00200 deny ip from any to 127.0.0.0/8
> 00300 deny ip from 10.0.0.0/8 to any in recv xl0
> 00400 deny ip from 204.210.189.0/24 to any in recv fxp0
> 00500 deny ip from 0.0.0.0/8 to any via xl0
> 00600 deny ip from any to 0.0.0.0/8 via xl0
> 00700 deny ip from 169.254.0.0/16 to any via xl0
> 00800 deny ip from any to 169.254.0.0/16 via xl0
> 00900 deny ip from 192.0.2.0/24 to any via xl0
> 01000 deny ip from any to 192.0.2.0/24 via xl0
> 01100 deny ip from 224.0.0.0/4 to any via xl0
> 01200 deny ip from any to 224.0.0.0/4 via xl0
> 01300 deny ip from 240.0.0.0/4 to any via xl0
> 01400 deny ip from any to 240.0.0.0/4 via xl0
> 01500 allow tcp from any to any established
> 01600 allow ip from any to any frag
> 01700 allow tcp from any to 204.210.189.38 25 setup
> 01800 allow tcp from any to 204.210.189.38 53 setup
> 01900 allow udp from any to 204.210.189.38 53
> 02000 allow udp from 204.210.189.38 53 to any
> 02100 allow tcp from any to 204.210.189.38 80 setup
> 02200 allow tcp from any to any setup
> 02300 allow udp from any 53 to 204.210.189.38
> 02400 allow udp from 204.210.189.38 to any 53
> 02500 allow udp from any 123 to 204.210.189.38
> 02600 allow udp from 204.210.189.38 to any 123
> 02700 allow tcp from any to any 22 in recv 204.210.189.38 setup
> 02800 allow icmp from any to any via fxp0
> 02900 allow icmp from any to any out xmit xl0 icmptype 8
> 03000 allow icmp from any to any in recv xl0 icmptype 0
> 03100 allow icmp from any to any via xl0 icmptype 3,4,11,12
> 03200 deny icmp from any to any
> 63000 deny ip from any to 0.0.0.255:0.0.0.255 in recv xl0
> 64000 deny log udp from any to any 137-139 in recv xl0
> 65000 deny ip from any to any via xl0
> 65535 allow ip from any to any

Well, I don't see any rules about allowing incoming ident connections
(113/tcp). I'll assume you know how to set up the firewall box to be
an auth proxy for the Win machine since I wouldn't know where to
start.
-- 
Crist J. Clark                           cjclark@alum.mit.com


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