RE: Port 8081 mystery

["Gressick, Michael" <mgressick () cybersource com>]

Try running TCPView.exe on one of the machines. It will report which
process "owns" the listening port.

http://www.microsoft.com/technet/sysinternals/utilities/TcpView.mspx

 

-----Original Message-----
From: listbounce () securityfocus com [mailto:listbounce () securityfocus com]
On Behalf Of WALI
Sent: Tuesday, January 23, 2007 10:07 AM
To: security-basics () securityfocus com
Subject: Port 8081 mystery

HI list...

I ran a nmap scan on quite a few machines on my internal subnet and one
port that appears on all those scans, especially the machines that are
still running adequately patched but older Windows 2000 workstations, is
tcp 8081. Though nmap shows this as blackice-icecap port I do not find
any such application running in task manager neither is this installed.

nestat-a just lists this port as 'Listening' and does not list any
application name assigned to it, so why is this port there? Who is using
this? I have ran antivirus scan and spybot checker just to rule out any
malware possibilities.

Nessus Scan (tis weeks plugin feed) does not show this port listed
amongst any vulnerability.

Here is the nmap output:

SuSE101:/home/root # nmap -O 192.168.126.245 --osscan-guess Starting
Nmap 4.00 ( http://www.insecure.org/nmap/ ) at 2007-01-23 11:10 GST
Interesting ports on 192.168.126.245:
(The 1667 ports scanned but not shown below are in state: closed)
PORT     STATE SERVICE
135/tcp  open  msrpc
139/tcp  open  netbios-ssn
445/tcp  open  microsoft-ds
2030/tcp open  device2
8081/tcp open  blackice-icecap
Device type: general purpose
Running: Microsoft Windows NT/2K/XP
OS details: Microsoft Windows 2000 SP4 or XP SP1

Nmap finished: 1 IP address (1 host up) scanned in 1.107 seconds