Web Proxy Question

[Tom Kyle <tom_(_at_)_eos_(_dot_)_umsl_(_dot_)_edu>]

I need to set up a web proxy server that accepts HTTP requests from 
authenticated, remote users and queries remote webservers.  We have some 
online periodicals licensed that will not accept users outside of our domain,
but since many of our users now have DSL, cable, or another ISP, they are
unable to access them from home.  And I'd sleep better at night knowing the
proxy was on an OBSD box.

The problem I am having is finding a proxy server that will rewrite HTML so
that it appears that my proxy is the real server, since requiring users to
reconfigure their browsers to access our library resources is impractical.

Has anyone done anything similar to this?  I realize that letting outside
users access outside hosts through your network is not really a popular
choice, but I don't have much choice on this one...

Thanks,

Tom

Thomas A. Kyle
Network Security Administrator
University of Missouri-St. Louis
tkyle_(_at_)_jinx_(_dot_)_umsl_(_dot_)_edu
(314) 516-6012