oops... should have said 4TB (not GB)

I have seen other posters say it is 4gb.

If you can get to them via the IP:port (192.168.1.178:81), then the next step is to see if you can connect outside your network via the your ISP IP address:port. And when that works, you set up DDNS...

Can you get to them by typing in your browser on a PC wired to the router the IP:port (192.168.1.178:81)

Try using ports 81 and 82. Also use different port for each camera.

If you type whatismyIP.com in your browser, you will see your service provider’s address to your modem. It is the IPv4 and the IPv6 numbers. If you know the address and port number you can use them...