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Network Security Security-Basics
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Re: how nmap can know my firewalled servers ?

Subject: Re: how nmap can know my firewalled servers ?
Date: Thu, 13 Apr 2006 10:24:35 -0200
On 4/13/06, Jay Stapleton <jay.stapleton@computershare.com> wrote:> Hi 
Alexey.>> Are you running Nmap from a machine inside your firewall?  Perhaps 
the> same machine which is running the services?>My sevices are on localhost. 
i.e. 127.0.0.1.
Very few firewall implementations block localhost.>
True, but iptables _does_ block localhost.
To block all IP traffic (including localhost) simply do:iptables -Fiptables -P 
INPUT DROP

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