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RE: N00b Question
From: "Paris E. Stone" <pstone () alhurra com>
Date: Thu, 30 Dec 2004 16:51:16 -0500

Squid Guard, a kind-of GNU WebSense.

http://www.squidguard.org/

And WebSense, but it isn't any where near free.

~~~~~
Paris E. Stone, "Linux Zealot"
CISSP, CCNP, CNE, MCSE
~~~~~
The only thing necessary for the triumph of evil,
is for good men to do nothing.
- Edmund Burke
 

-----Original Message-----
From: Idol Crash [mailto:idolcrash () gmail com] 
Sent: Thursday, December 30, 2004 3:46 PM
To: harshal.dedhia () skybird-travel com
Cc: security-basics () securityfocus com
Subject: Re: N00b Question

AFAIK, I think that the only way to block web-based e-mail would be
through a proxy or host file, as to block it through a firewall, one
would have to block port 80, used for all web viewing, which isn't
very practical.  For MSN and Yahoo chat, you'd have to find the ports
for which they are typically used and block them (I don't know them
off the top of my head), and prevent users from installing said
applications.

Good luck, and I hope this was helpful.


On Thu, 30 Dec 2004 11:41:51 -0500, Harshal Dedhia
<harshal.dedhia () skybird-travel com> wrote:
Hi,
I am very new to the firewall and network security world. I have a
situation wherein  I need to block webbased email access and the
ability
to upload attachments to web-based email. I also need to ensure that
MSN/yahoo chat is disabled and quotas are established for web surfing.

Is there an Open Source solution to this problem. The network
comprises
Cisco Routers and 500 series firewalls.

Cheers!
Harshal





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