Security Basics mailing list archives

Re: iptables configuration issue


From: Ansgar Wiechers <bugtraq () planetcobalt net>
Date: Wed, 26 Aug 2009 00:54:18 +0200

On 2009-08-25 J.Bakshi wrote:
I really really need your help to configure iptables to cope with
"connection time out problem"  Here what actually the situation is.

I have configured iptables to drop nmap and other port scanning
techniques ( collected from internet, like XMAS scan, FIN scan
etc...). If I run nmap against the   server ( like nmap -P0 <myserver>
or nmap -P0 -sT <myserver> ) then the firewall successfully dropping
the scan packets and  make the nmap scan  to wait for *looooong* .
Good.  But on the other hand  the  http and mail server running on the
 server providing "connection time out error" hence it is not possible
to connect the mail /apache and other services running on that  server
during port scanning against it. Could any one kindly suggest how to
cope with this situiation ?

Start with posting your ruleset.

Regards
Ansgar Wiechers
-- 
"All vulnerabilities deserve a public fear period prior to patches
becoming available."
--Jason Coombs on Bugtraq

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