I'm trying to figure out how to set up VPN access to my domain controller. I have a T1 coming in to a Cisco 1720 router with a CSU/DSU module that is owned/controlled by my ISP, and lets all traffic through. Next along the line is a Cisco PIX515E firewall that I own/control. That is connected to an HP Procurve 2524 switch, as is the rest of my network. This network has about 15 PCs and one server/domain controller, running W2k Server. The goal of this VPN connection is to allow users to access their files from the road, using laptops from various hotels.
First, what rules do I need to add, and what and commands do I need to give to my firewall in order to allow VPN access to my domain controller (10.10.1.1)?
Second, how do I set up the VPN software on the server? (encryption is a must)
My server has 2 network cards, one not in use right now, but I can easily put the server between the firewall and the switch if that will help.