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 From:  "Eric Garnice" <eric at number13 dot com>
 To:  <m0n0wall at lists dot m0n0 dot ch>
 Subject:  Re: [m0n0wall] Packets still forwarded...
 Date:  Thu, 18 Dec 2003 14:36:40 -0500
Yep, UDP is was.

I'll use Reset state from now on.

Thanks Manuel.


----- Original Message ----- 
From: "Manuel Kasper" <mk at neon1 dot net>
To: "Eric Garnice" <eric at number13 dot com>
Cc: <m0n0wall at lists dot m0n0 dot ch>
Sent: Thursday, December 18, 2003 2:30 PM
Subject: Re: [m0n0wall] Packets still forwarded...


> On 18.12.2003, at 20:13, Eric Garnice wrote:
> 
> > I've noticed that if I change a NAT port mapping, packets are 
> > forwarded to
> > both the original destination as well as the new destination until I 
> > reboot
> > m0n0wall.
> 
> Did you test with UDP? If so, then that's very well possible and also 
> unavoidable, as m0n0wall cannot know when an UDP transmission is over, 
> so the entry in the state and NAT tables will remain for a few minutes 
> until it times out. You can manually clear these tables on the "Reset 
> state" page.
> 
> > This can be very dangerous.  I do software testing, and need to change
> 
> No. Even if NAT failed by redirecting packets that it wasn't supposed 
> to, it still wouldn't be "dangerous" as the packet filter would take 
> care of it (if configured properly). Changing a NAT rule does not 
> change any filter rules, even if a filter rule was initially auto-added 
> (checkbox on add NAT rule screen).
> 
> - Manuel
> 
> 
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