SSH connection refused I have a CentOS Linux server with a SSH connection. It works perfectly but from time to time, the server refuses the connection. If I reboot the server, I can SSH again. What could be wrong?

Try running `sshd` on the server in debug mode (`-d`, you can go up to `-ddd`) to get additional info. You can do this even remotely if don't happen to have the server under your table: log in, and then you can start another sshd instance on a different port with the `-p` option and try to log on into this instance.