RE: Port question


113 is an auth port for ident.

http://www.iana.org/assignments/port-numbers

And Steve's site:
http://www.grc.com/faq-shieldsup.htm#IDENT

The post is closed, which means that nothing can come through-unless first
initiated by something from inside your network.

Stealthing means that the scan coming from grc doesn't know what is at the
other end. Could be something, could be nothing. In the case of 113, though,
it knows 'something' is there and it's closed. Not sure how much can be
enumerated from that single port, however. Not much, except that a host is
there.

Not much to worry about, to be honest.

Google for stealthing 113 on smoothwall and see what comes up or check their
excellent forums.
http://community.smoothwall.org/forum/




-----Original Message-----
From: listbounce@xxxxxxxxxxxxxxxxx [mailto:listbounce@xxxxxxxxxxxxxxxxx]
On Behalf Of Ken Pryor
Sent: Thursday, June 25, 2009 1:39 AM
To: security-basics@xxxxxxxxxxxxxxxxx
Subject: Port question

Hello all, I just joined the list and this is my first post to it.  I
am a networking noob and am not sure if this is something I should
worry about or not.  I just set up a Smoothwall Express firewall and
later ran a Shields Up scan at grc. com  It showed all ports as
stealth except one, port 113, which it showed as closed.  Shields Up
gave my system a "failed" score based on that one port showing as
closed.  My question is, is this anything I need to worry about and,
if so, how might I fix it?
Thanks to all who offer their knowledge and help to those of us just
getting started.
Ken Pryor

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Securing Apache Web Server with thawte Digital Certificate
In this guide we examine the importance of Apache-SSL and who needs an SSL certificate. We look at how SSL works, how it benefits your company and how your customers can tell if a site is secure. You will find out how to test, purchase, install and use a thawte Digital Certificate on your Apache web server. Throughout, best practices for set-up are highlighted to help you ensure efficient ongoing management of your encryption keys and digital certificates.

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