RE: Port open - help

[Peter Rodger <prodger2008 () yahoo com>]

Thanks for the reply.  

Yes.  We do run Exchange servers and open 25/110 for
the exchange servers on the PIX.  

> What are the banners
> when you telnet to those ports from an external
> machine?

I got a empty black screen.

What I found out that port 25/110 open on the PIX
external interface, any server that has static mapping
on the PIX has 25/110 open.  I have no idea that
25/110 open on the PIX public interface and I did not
open that ports on the PIX public interface.  Why did
other servers have these ports open even we did not
open on these servers?

Any help will be appreciated.

Thanks again,

Peter


--- Mike <mike_sha () shaw ca> wrote:
> 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
> >
> >
> >
> >
> > __________________________________
> > Celebrate Yahoo!'s 10th Birthday!
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