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Re: Fw: VIRUS IN YOUR MAIL (W32/BugBear.A (Clam))

On Thu, Oct 17, 2002 at 10:44:06AM +0200, Russell Coker wrote:
> Is Linux transperant proxying up to this?  Can you intercept a data stream 
> while preserving both the source and destination addresses?

I don't think it is possible, but I do not know why...

AFAIK transparent proxying in Linux is limited to redirecting all ports
to a given port another host. It is not possible for the proxy server to
tell, for instance what the original destination IP address was.

A transparent HTTP proxy relies on the server name HTTP1.1 request
field to determine what host the client really wanted to connect to.
(this has been tested with Pacific's transparent proxy).
Brian May <bam@snoopy.apana.org.au>

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