Nmap Security Scanner
*Intro
*Ref Guide
*Install Guide
*Download
*Changelog
*Book
*Docs
Security Lists
*Nmap Hackers
*Nmap Dev
*Bugtraq
*Full Disclosure
*Pen Test
*Basics
*More
Security Tools
*Pass crackers
*Sniffers
*Vuln Scanners
*Web scanners
*Wireless
*Exploitation
*Packet crafters
*More
Site News
Site Search:
Exploit World
Advertising
About/Contact
Credits
Sponsors:
edgeos



Security Basics: Re: Hidden Ports

Re: Hidden Ports

From: Alejandro Flores <alejandro.flores_at_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/

---------------------------------------------------------------------------
Ethical Hacking at InfoSec Institute. Mention this ad and get $720 off any
course! All of our class sizes are guaranteed to be 10 students or less.
We provide Ethical Hacking, Advanced Ethical Hacking, Intrusion Prevention,
and many other technical hands on courses.
Visit us at http://www.infosecinstitute.com/securityfocus to get $720 off
any course!
----------------------------------------------------------------------------
Received on Feb 04 2004

[ Nmap | Sec Tools | Mailing Lists | Site News | About/Contact | Advertising | Privacy ]
edgeos