port forwarding on g54 not working

I changed it to no external address and checked firewall ports are not blocked by firewall, still shows ports closed on canyouseeme

A router forwards the traffic used on those ports to the Internal addressed in the port forwarding rules. When you get a response from canyouseeme.org, the service on the internal device is actually replying back to the site.  Next step is to test make sure those devices are running the service and test the local connection.

Are those “Internal Server” addresses IP Cameras?  I don’t understand how those ports work is used but the next step is to try to connect to those Internal server address in the local network. 

If those ports use TCP,  you can use command prompt Telnet to the port to see if they’re working on the devices locally.  Here’s an example of the command.

If the port is active on the device, you will see blank screen with blinking cursor. 

If the port is not active, you will see this message “Connecting To 192.168.0.81...Could not open connection to the host, on port 554: Connect failed”

They are cameras they work locally, they were working when I had them port forwarded on my Xfinity router. 

As a test, you can try setting up DMZ to a camera and test the port.  DMZ will forward all traffic to the camera. 

Do you know if the cameras use RTSP or another protocol?

They use rtsp

Have you tried using DMZ?

Yes only works for one device not two, still blocks the port.

Hmm, you should get port response with port forwarding if it response with DMZ.  I would try again port forwarding on the camera that worked with DMZ.  And then work on the 2nd camera if the first camera works.