Server Help, I can go onto my server, but my friends cannot.

[Trashcat]

Here is my situation, I have a Tekkit server that I want to play with my friends on. I have it all installed, I can run the batch launch just fine and it will run. I can go and look on the server list and it will be up with a 5 bar connection. But, my friends cannot get onto the server, it says no connection for them at all. I thought it was from a lack of RAM going to the server, so I edited the batch launch, and injected it with 6G's of RAM, it still didn't work. Then I tried to disable my computers firewall, it still didn't work. Can someone help? Did anyone have the same problem? If so, how did you fix it? Thanks

[simon816]

so you are running the server on your computer, so your friends need to be able to connect to your computer from where they are. If you are behind a router (most likely) then check the port forwarding settings on the router.

Is this the first time you have set up a server?

[pherce]

http://canyouseeme.org/

Check port 25565. If it's not open then you need to adjust your firewall.

[TDP04]

Additionally, by Firewall, you should be checking both the firewall on your PC AND the one on your Cable Modem/ISP device. Both or either one can by your blocking issue.