Teamspeak 3 Server, New Install, cannot connect anywhere but localhost

Hi and sorry for the confusion. I cannot connect to the Teamspeak server at all from another pc on my in house internal network. I also tried to use my ISP external address just to see if it would work and it does not. It was just a desperate attempt to get connected to the TS server. In the past my wife and I always connected to the internal network address when we played games but my father in law used the external address to join us as he is in another state. I will check to see if for some reason I made my internal network public but I am pretty sure I did not. I used to run this TS3 server for years and it always worked fine but with the new install on a different newer more powerful pc with all the same router and ports forwarded, it’s not working for some reason. The old pc it used to run on was Windows Vista 32 bit. :slight_smile: Thanks for all the help so far. I have a new router and may install it if I give up on trying to make this setup work.
Dave