Re: 2.0.36: ip_masqurade and stealth scan DoS
Paul Rusty Russell (Paul.Russell@rustcorp.com.au)
Tue, 09 Mar 1999 06:43:09 +1130
In message <Pine.LNX.3.96.990308095449.23918D-100000@hobbe.tripnet.se> you writ
e:
> Hi,
>
> We have a problem with ip_masqurading set up as a firewall. When someone
> runs a stealth scan from the masquraded net to the outside net, it will
> very fast consume all available masqurade ports. The result is a nasty
> DoS for all adresses on the masquraded net.
Take a baseball bat to the stealth-scanning motherfucker, and the
problem will be resolved.
There are several possible DOS attacks from INSIDE a NAT host. Fixing
this one doesn't win much.
Trust me on the baseball bat,
Rusty.
--
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