Re: TCP SYN FIN

[Antony Stone <Antony@Soft-Solutions.co.uk>]

On Friday 02 July 2004 1:27 pm, Steve Comfort wrote:

> Hi All,
>
> I'm running Nessus to check my firewall rules, and its telling me :
>
> "remote host does not drop TCP SYN packets with the FIN flag set .... "
>
> I've tried adding the following rule :
>
> $ipt -A INPUT -i $iface -d $network -p tcp --tcp-flags SYN,FIN SYN, FIN
> -j DROP

What does the variable $network corresopond to in the above rule?

Does the address you are sending the SYN-FIN packets to fall within this 
range?

If you do a "iptables -L INPUT -nvx" do the packet & byte counters show any 
packets matching the above rule?

Regards,

Antony.

-- 
Success is a lousy teacher.  It seduces smart people into thinking they can't 
lose.

 - William H Gates III

                                                     Please reply to the list;
                                                           please don't CC me.