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Date:      Sun, 13 Dec 1998 14:20:45 +0100
From:      Eivind Eklund <eivind@yes.no>
To:        Brian Somers <brian@Awfulhak.org>, Enoch Ceshkovsky <shadey@home.com>
Cc:        Gary Palmer <gpalmer@FreeBSD.ORG>, current@FreeBSD.ORG
Subject:   Re: NATD/Libalias leaks
Message-ID:  <19981213142045.H5444@follo.net>
In-Reply-To: <199812130008.AAA16396@keep.lan.Awfulhak.org>; from Brian Somers on Sun, Dec 13, 1998 at 12:08:39AM %2B0000
References:  <000e01be2605$9f11fa00$0201a8c0@shadey.oow.com> <199812130008.AAA16396@keep.lan.Awfulhak.org>

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On Sun, Dec 13, 1998 at 12:08:39AM +0000, Brian Somers wrote:
> > Version 2.5: December, 1997 (ee)
> >     - Added PKT_ALIAS_PUNCH_FW mode for firewall
> >       bypass of FTP/IRC DCC data connections.  Also added
> >       improved TCP connection monitoring.
> > 
> > Version 2.6: May, 1998 (amurai)
> >     - Added supporting routine for NetBios over TCP/IP.
> 
> I added alias_cuseeme.c
> 
> It looks like Matt's going to have a crack at alias_nbt according to 
> his followup to bin/8962.
> 
> Can you try building the -current version of libalias with 
> -DNO_FW_PUNCH and see if that makes a difference ?  If it does, we 
> can point the finger at Eivind (cc'd, hi;)

I'd be surprised - I'm running those changes in active production at
_many_ boxes (I can't say any exact numbers, so lets leave it at being
significantly more than 100).

Also, the firewall changes do _nothing_ unless PKT_ALIAS_PUNCH_FW is
set.

There might be an issue with the improvements to the connection
monitoring.  I'm pretty certain it is NOT buggy, but it may cause
something that looks like a leak if the boxes being aliased are doing
TCP incorrectly.  This will reach a steady state, however, as there is
a timeout of 24 hours.

Eivind.

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