Re: Transparent caching

From: John Volanthen <>
Date: Fri, 3 Jan 1997 09:13:54 +0000 (GMT)

On Thu, 2 Jan 1997, Todd Graham Lewis wrote:

> On Wed, 18 Dec 1996, Paul M. Hoogsteder wrote:
> > Does anyone know transparent-cache implementations in software, or is
> > anyone working on something like that? (Other than the Interceptor).
> > 75% of our network-traffic goes to personal users who dialin with PPP, of
> > which probably 90% is either ftp or http. Setting up a transparent cache
> > can save us thousands of dollars every month (at $0.30 USD for every
> > megabyte).
> Linux has a really neat transparent proxy option whereby all packets which
> meet certain criteria (say, destination port = 80) can be redirected to a
> local process (say, squid).
> It would be really easy to take squid and make it aware of this option.
> Once it accepts the connection, it has to do a getsockopt on the
> connection to discover the intended destination. Some pseudocode:

What facilities does linux provide to do this, whach kernel version is
required, i was looking at doing something similar by hacking the IP code
in the kernel but this sounds much better ....

John Volanthen
Received on Fri Jan 03 1997 - 01:24:16 MST

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