Ascend Archive
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Re: (ASCEND) Redirection filter for proxy's

Hi andre

Yes - quite true. 

We run a national backbone and have a lots of schools use our services - 
therefore, proxy servers are a great way to keep down costs as schools get 
about 40 - 55% hit rates.

We use transparent proxy'ing on the access servers, but for those clients using 
ISDN, FR and what not, it makes it a little bit harder.

Oh well - back to the drawing board ! 

Adam


> On Mon, Mar 23, 1998 at 12:09:53PM +0000, Adam Neat wrote:
> > Hello
> > 
> > Has anyone had any success in writing a redirection filter for an Ascend Max?
> > 
> > Cisco users have a redirection (auto-transparent proxy) filter for their IOS 
> > 11.x which basically takes ALL packets destined for port 80 and pumps them back 
> > to another server on port 8080 (proxy server).
> > 
> > Does somethign like this exist?
> 
> Yes, on Ciscos ;->
> 
> Seriously: No Ascend doesn't have such thing. And to say it honestly, it
> should not be implemented there, either. When it comes to crude hacks with
> IP this is one of the more remarkable ones. BTW, AFAIK Ciscos do not re-
> direct the host:80 to cache:8080 but just do policy based routing in that
> they route packets destined for host:80 to cache. Cache has then to handle
> those packets correctly, meaning it has to run something at the L2/L3
> border to intercept these packets and feed the proxy software with it.
> This is usually called a "transparent proxy" feature (and actually the
> location of the real hack). Ciscos just help it by forcing packets to go
> there even if they don't want to. If it comes to Ascend probably 99% of
> the members of this list would be more interested in Ascend fixing the
> flaws left in the current code for "normal" routing before they start
> to implement esoteric routing features like that. Then again, maybe not.
> Correct me if I'm wrong.
> 
> -- 
> 
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> 
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                  IPAX Systems
              Melbourne, Australia
            National Systems Manager
            Ops Tel:  03 - 9887-1984
            Ops Fax:  03 - 9801-8533
        Web Site http://www.ipax.com.au
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