Here's an advanced networking question. Our office runs a mixed MacOS (9.x) and Windows (98, NT4, 2K) environment, all on a Windows (NT4 and 2K) server platform. We're on a dedicated T1 at the office and have a decent hardware firewall. We also have several remote Mac users (on DSL or cable modems) who sometimes take work home on their Powerbooks.
The firewall is good in that it's secure; not good in that now Mac users who want to work from home can no longer mount our Win2K servers (which are configured to allow Mac file sharing over TCP/IP) from home. I guess that what we're looking for is basically a very simple VPN.
What are the steps involved in getting this to work? What are the known security threats? How do we keep our network and servers reasonably secure?