I haven't used IP cameras, but am pretty well versed in networking so maybe I can help.
Can you tell us how you connect to the camera on your network? do you use an app or a browser? do you type in an IP address or a name? do you add a port?
192.168.1.105 in browser address bar
or do you click on "camera 1" in a running program?
If you can give make/model of camera(s) I can look up the manual
In theory, theory and practice are identical.....in practice they aren't!