Customer-facing ACLs
Adrian Chadd
adrian at creative.net.au
Wed Mar 19 04:46:20 UTC 2008
On Tue, Mar 18, 2008, Jon Lewis wrote:
> >The solution, of course, is to hire consultants (SIBR if possible) to port
> >everything to port 80 !
>
> That's been going on for years. Back when it was common for ISPs to run
> squid servers and transparently proxy to them (probably around 2000), I
> ran into a customer using some sort of aviation data in real time app
> which used port 80 (and wasn't HTTP). I had to special case traffic to
> that service's IP to get it not to hit squid. When I asked them why they
> were running a non-HTTP protocol on 80/tcp, the answer was "that gets us
> through most firewalls."
There's patches to Squid to make it silently transparently proxy stuff
that doesn't look like HTTP.
(I need to make it knob-able before I commit it, as some people -like- having
the "must be HTTP" implication of transparent interception.)
Adrian
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