New Internet Secure Access Server (ISA Server) from Microsoft is a great peace of caching firewall. It runs on Windows 2000. I like it, it's much better than MS Proxy server.
I would prefer something that can run on NT 4 exclusively or both NT and 2000, but not 2000 only. Sorry, I did not express myself very well in the post...
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Alternative to Microsoft Proxy
Is there a good, well-integrated alternative to Microsoft Proxy for Windows NT 4 (or 2000)?
BTW, has anyone heard of Squid being ported to NT?