IMHO http://www.vulnerabilities.org/analysis.html is a good alternative to
securityspace. You can easily chose between a simple nmap scan or a nessus
scan without registering or anything.
As for checking that port 25 is listening on the firewall, the simplest
thing is to telnet to port 25 of the firewall and see if it responds. This
can easiest be done from a shell account on the internet, but also from the
inside if your firewall rule includes the internal net as the source.
Lars
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of
Thomas Reinke
Sent: Thursday, May 10, 2001 04:39
To: NDUKU MUNYARADZI; FW-1 Mailing List
Subject: Re: [FW1] checking if port 25 is listening on firewall
Try running an external audit/port scan of your server.
As an example, http://www.securityspace.com provides a number
of auditing options, ranging from simple port scans, to full
vulnerability assessments.
Thomas
> NDUKU MUNYARADZI wrote:
>
> Hie
> Is there a way for me to check from within my network i.e from my
> Exchange server whether port 25 is listening on the firewall.
>
> May be can I telnet my firewall on port 25 and get an smtp connection
> is this also possible for my ISP to check if port 25 is listening on
> my firewall by way of telneting into the firewall on port 25
>
> Thank you in advance
>
> Munyaradzi
--
------------------------------------------------------------
Thomas Reinke Tel: (905) 331-2260
Director of Technology Fax: (905) 331-2504
E-Soft Inc. http://www.e-softinc.com
Publishers of SecuritySpace http://www.securityspace.com
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