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[nweaver]

Is there and easy way to cause all http requests going out of the network to be redirected to an internal webserver with a message?

I was thinking either tranparent proxy (not sure how hard it would be to set this up with the current setup) or "poisen" my internal DNS server to push all requests to this machine.

Any ideas?

 

[nweaver]

bump...

any ideas on making this work? I have full access to the DNS server and routers, and can add a box if needed.

 

[RebateMonger]

Sorry, but I'm not an expert on this. It'd seem that you need a proxy server of some sort. I'd imagine that Squid for Linux would be able to do it.

What you want is trivial if you use Microsoft's ISA Server. It'd take a couple of mouse-clicks to redirect all outgoing web traffic (regardless of the browser) to an internal web server. One ISA box can handle thousands of clients if necessary.

 

[skyking]

I can do that with PF and freebsd, quickly.
http://www.openbsd.org/faq/pf/example1.html

Note the example rdr rule for sending incoming http traffic to the internal server, and rewrite accordingly.

Do a quick build of your favorite distro with either pf or ipf or ipfw, and let me know what you build.

I recently built a proxy server with squid, dansguardian and pf for a private school.

Edit:

Make that a two NIC gateway box🙂