Firewall Wizards mailing list archives

Re: IRC ports open on NT4?


From: hermit1 <hermits () mac com>
Date: Sun, 15 Jul 2001 13:46:05 -0700

Both of those ports are default ports for some nasty Trojan programs, implying it is about time for you to reformat your disk and reinstall whatever programs *you* want running. There are many web sites that explain the various Trojans that use these ports. You may not be infected, but given the ports you name, you probably are. Take a look at other machines you have that might be infected and see what ports they are listening on, and use other methods to look for possible problems.

hermit1

At 04:58 AM 7/15/01 -0700, Philip J. Koenig wrote:
Have some suspicious stuff going on at a site and in my initial
investigation I went to an NT server there and typed 'netstat -an' to
see what was open, and found these curious entries:

TCP     0.0.0.0:6666            0.0.0.0:0                       LISTENING
TCP     0.0.0.0:6667            0.0.0.0:0                       LISTENING
[...]
TCP     127.0.0.1:6667          127.0.0.1:1043          ESTABLISHED
TCP     127.0.0.1:6666          127.0.0.1:1043          ESTABLISHED

That box runs the following services: Post.office (SMTP MTA),
Interscan Viruswall, Filemaker Pro Server, and PC Anywhere host.

There is no IRC server on that box, and the Microsoft NNTP service is
not running.  Why would it be listening on IRC ports?

Thanks,


Phil



--
Philip J. Koenig                                       pjklist () ekahuna com
Electric Kahuna Systems -- Computers & Communications for the New Millenium

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