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

[Josh Zlatin-Amishav <josh () tkos co il>]

On Fri, 9 Sep 2005, Mike Jones wrote:

> 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.

What scan type are you using. Try using the --packet_trace flag to see why nmap thinks port 21 is open?

--
 - Josh

> Thanks in advance
>
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--

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Audit your website security with Acunetix Web Vulnerability Scanner: 

Hackers are concentrating their efforts on attacking applications on your 
website. Up to 75% of cyber attacks are launched on shopping carts, forms, 
login pages, dynamic content etc. Firewalls, SSL and locked-down servers are 
futile against web application hacking. Check your website for vulnerabilities 
to SQL injection, Cross site scripting and other web attacks before hackers do! 
Download Trial at:

http://www.securityfocus.com/sponsor/pen-test_050831
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