Dedicated server 'server is not respnding"

Ok I just made a dedicated server, but when my friends try to join they tell me it’s not responding and they can’t join.

Have you port forwarded all necessary ports? Have you tried telling your friends to try connect ipaddress in console? What OS is the server running? Are you behind a hardware firewall?

I got the same problem, how do you forward ports?

Edit: I forwarded the ports, but havent tryed the “connect ipaddress” yet