Re: how nmap can know my firewalled servers ?

["Alexey Eremenko" <al4321 () gmail com>]

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 -F
iptables -P INPUT DROP