Re: nmap showing port 21 (ftp) open, but port is actually closed

From: Thor (Hammer of God) (thor@hammerofgod.com)
Date: Mon Sep 12 2005 - 00:11:42 EDT


Are you scanning through a NAT device (or whatever) that has ftp enabled?
I've seen different scanners behave similarly by reporting what
ports/services are in use on the NAT device itself when a client scans an
external host through it...

t

----- Original Message -----
From: "Mike Jones" <sopiaz57@gmail.com>
To: <pen-test@securityfocus.com>
Sent: Friday, September 09, 2005 6:47 AM
Subject: nmap showing port 21 (ftp) open, but port is actually closed

> Has anyone ever seen this before, nmap is showing port 21 to be open on a
> machine on the internet, but 21 is not listening on that machine. It
> happens to all machines I scan outside the local area network.
>
> Thanks in advance

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