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