Security Basics mailing list archives

RE: Port open - help


From: "Mike" <mike_sha () shaw ca>
Date: Wed, 9 Mar 2005 09:23:10 -0500

Maybe the PIX is forwarding 25/tcp and 110/tcp to another server?  A
mail server in particular.  Do you run Exchange?  What are the banners
when you telnet to those ports from an external machine?

Mike.

-----Original Message-----
From: Peter Rodger [mailto:prodger2008 () yahoo com]
Sent: Tuesday, March 08, 2005 1:27 PM
To: security-basics () securityfocus com
Subject: Port open - help

Hi, all

I just use nmap to scan our Citrix servers and found
out ports 25 aqnd 110 open through public addresses.
I can use telnet ip 25/110 and ports are open.  But,
no 25/110 services are installed on the Citrix
servers.  I used nmap to scan the Citrix servers using
internal IP and ports 25/110 are not open.  We use PIX
500 as a firewall.

I did not open 25/110 for the Citrix servers on the
firewall.  Why are 25/110 ports open and how do I
solve them?


Thanks for any help!

Peter




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