Security camera and remote viewer question?

I have a security camera connect to a router with an IP address of (192.168.1.122) igned by the router (192.168.1.1). It's also igned Port: 8000 with TCP/UDP checked. I can connect to the cameras through a computer on the network, but when I go home and try to connect through the internet, it's a no go. Can't figure out why? Any settings I might be missing?