Server refuses to let anyone connect.

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So, I wanted to fire up a server. I port forwarded port 53640 and opened my game.
I created a new server on the site (yes, i did use my external IP and not my local IP.)
I entered the "dofile" command and I got the "RBLXDev server started successfully!" message.
My server has the green up arrow on the games page, but whenever I go to play it, I can't connect to the server.
The only way I CAN connect is if I use localhost.
Am I doing something wrong, or am I forwarding the wrong port?
afaik, you can't connect to your own server using your external IP.
Dirt_Piper wrote:afaik, you can't connect to your own server using your external IP.
okay
im going to leave my server open and see if people connect
I left my server open, nobody connected. Also, I should be able to connect using my own external IP (i've done it in another program before.)