Help

I have a cisco router 3620 and I have 5 ips and various services running on the ips. I can connect the router to the switch but can you use the ethernet0\0 for the inside and the outside? Can a single interface handle inside and out. I had a cisco 2600 router before years ago and am trying to remember how to config this one. Any help would be greatly appreciated. Jamesbtussey@gmail.com