sorry if this is going over old ground
I am trying to setup IIS in a DMZ so our sales guys can access their mail using web outlook.
If I'm using the internet to connect over ip how do I get a connection to the CO?
I understand how to connect two routers back to back. But how does interesting traffic open the isdn line for eg our cisco 1600 CO router over the internet?
Has anyone done anything similar.
What is particularly confusing is this. If from the CO I want to send an email, the router will sense interesting traffic on eth0 and bind to the bri0 port connecting to the isp next hop lets say 0845222170. That I understand but how is my router dialed up from the internet?
Also I belive I may need to use a VPN connection