You can use a tool like
Wireshark and monitor what happens when you connect the ip camera directly to a local network port.
You can also Google for the brand and model of the ip camera and see if the manufacturer has any documentation for download which mentions the default ip address.
Most ip camera's display a setup page in your browser when you enter the correct ip address.
Also most manufacturers have some kind of tool for detecting and editing the ip address.
Before you can connect to a default ip address, which often begins with
192.168, it might be handy to add that under "Advanced" ip4 network settings, see:
Windows 7: Advanced Network Configuration | Pluralsight[
^]