From mboxrd@z Thu Jan  1 00:00:00 1970
From: Julio Cesar Ody <julioody@bol.com.br>
Subject: making services invisible
Date: Thu, 10 Oct 2002 10:13:52 -0300
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Hello. I'm using Slackware 8.1, kernel 2.4.18 and iptables v1.2.7a. I 
blocked external acess to some services using the following rule:

iptables -A INPUT -i ! eth0 -p tcp -m multiport --destination-port 
<port1>,<port2>,<blablabla> -j REJECT

However, when I perform a stealth scan using nmap on my host, I still 
can see them running, but instead of "opened" I get them as "filtered". 
Is there a way to block these results, making the services literally 
invisible ? Appreciate any help, and also any technical information 
(links, docs) regarding the answer.



Julio Cesar Ody