I set up my own 1.6.4 forge server, and it launches fine, but when I attempt to direct connect (using the same computer that's running the server, I get an error message saying I have a "bad login." On the server I can see that the account connects to the server, but is then immediately dropped.
When I try to connect on a different computer (over the same network), it times out before ever reaching the server.
Both the server and the accounts have the same version of forge and no mods are installed yet, as I'm trying to make sure the server works before I download all the mods I want. I've tried searching for help, but all the relevant posts I can find say it's the firewall, which I checked, and it's unblocked for java.
What should I do?
Edit: To get around the bad login, I allowed offline mode in server.properties. Since the server is only used locally, this shouldn't be an issue.