I wouldn't think so. For example, all http traffic on the internet is port 80. It's really a matter of what port is the application that you are viewing the cameras on... what port does it want. I have yet to see a security system where you can select a port number. For any application that requires a port, all devices would use the same port.
I'm wondering if maybe we have a language barrier because the question just seems a little odd to me. I could easily be very wrong on that point. If, however your question is more about the IP address, then they will be different.