Security Basics mailing list archives

Re: Hidden Ports


From: Alejandro Flores <alejandro.flores () triforsec com br>
Date: Tue, 03 Feb 2004 16:36:18 -0300

        Hello,

        If a backdoor is set to only accept connections from a configured ip
address or network, I guess that nmap will found this port as filtered,
as your ip address is not allowed to connect.

Regards,
Alejandro Flores

Can a port scanner not see a port that is opened?

The question is: can a backdoor be on a machine, and with nmap -p 1-,
for example, you couldn't see it?

Thank you,
Eduardo




--TriForSec
http://www.triforsec.com.br/ 

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