Except that the free version of safeproxy.org is not using a proxy server. It uses a 
cgi script for displaying web sites. But an URI resource will block the paid version 
of safeproxy.org that uses a squid proxy.

Lars

> -----Original Message-----
> From: Volker Tanger [mailto:[EMAIL PROTECTED]]
> Sent: Tuesday, October 15, 2002 13:35
> To: [EMAIL PROTECTED]
> Subject: Re: [FW-1] HTTP Tunnelling
>
>
> Greetings!
>
> Navin Mehra/MUM/IN/STTL wrote:
> >
> > concern is can the firewall block such type of
> tunnelling/evasion where by
> > unauthorized/malicious data can enter ones network. Is
> there any service on
> > the firewall which can detect such sessions.
> >
> > Can i try with the URI service..!! Please help.
>
> Yes, allow http-->URI and enable "Transparent" only - thus blocking
> "tunneling" and especially "proxy".
>
> Bye
>         Volker
>
> Volker Tanger
> IT-Security Consulting
>
> --
> discon gmbh
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>
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> [EMAIL PROTECTED]
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>
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