IP Camera Access Problem

I set up a wireless IP camera in my house. When I'm in my house, I can access it easily. When I'm at work the page won't load. Forgot to check it from out of town yesterday. :(

I checked with my IT person to see if there was some reason the ip address might be blocked on our work network and he said no.

Is there a setting on my wireless dsl router I should look at that might be blocking outside access to a peripheral in my house?

Thanks