RE: N00b Question

From: Paris E. Stone (
Date: 12/30/04

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    Date: Thu, 30 Dec 2004 16:51:16 -0500
    To: "Idol Crash" <>, <>

    Squid Guard, a kind-of GNU WebSense.

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

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

    -----Original Message-----
    From: Idol Crash []
    Sent: Thursday, December 30, 2004 3:46 PM
    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

    Good luck, and I hope this was helpful.

    On Thu, 30 Dec 2004 11:41:51 -0500, Harshal Dedhia
    <> 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
    > 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
    > Cisco Routers and 500 series firewalls.
    > Cheers!
    > Harshal

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