[356] in resnet
Re: Blocking Ports at the Internet Router
daemon@ATHENA.MIT.EDU (Jim Colunio)
Fri Nov 9 11:10:44 2001
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Message-ID: <09c701c16938$0e3a6e80$fa098c0a@elmira.edu>
Date: Fri, 9 Nov 2001 11:03:21 -0500
Reply-To: Resnet Forum <RESNET-L@listserv.nd.edu>
From: Jim Colunio <jcolunio@ELMIRA.EDU>
To: RESNET-L@listserv.nd.edu
Joe,
We use our firewall, a Cisco PIX, and Packeteer to monitor and block
whatever we need to. It's easier for us because AppliedTheory (I'm sure
you've heard of them) manages our router. They are very prompt in responding
to requests, but we can monitor everything minute by minute and respond as
necessary.
Jim
----- Original Message -----
From: "Joe Karam" <jkaram@RUBY.HAMILTON.EDU>
To: <RESNET-L@listserv.nd.edu>
Sent: Friday, November 09, 2001 10:44 AM
Subject: Blocking Ports at the Internet Router
> Hi folks,
>
> I have recently asked our ISP to block TCP ports 138 and 139 (netbui) from
> entering our internal network.
>
> I have a few questions for you:
>
> 1) Do you block ports 138 and 139 at your Internet router? If you don't,
> what applications do people use from off-campus that require those ports?
>
> 2) What other ports do you block at your Internet router?
>
> 3) Do you prefer blocking ports with access lists or firewalls?
>
> Thanks for any feedback. I am happy to post a summary if I receive any
> replies.
>
> Joe Karam
> Director, Network and Telecommunications Services
> Information Technology Services
> Hamilton College
> 198 College Hill Road
> Clinton, NY 13323
> Phone: 315-859-4167 Fax: 315-859-4185
> jkaram@hamilton.edu
> http://onthehill.hamilton.edu/college/its/network_services/
>
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