If you are bored having to enter your username and password everytime you connect to a server you can do the following
In your pc run "ssh-keygen"
This will generate public/private rsa key pair.
Then run "ssh-copy-id username@servername"
This will copy the appropriate files to the remote server
Now you can connect to the server and you will not be asked for your credentials.
You can also add the following lines to your ~/.ssh/config file
Host servername
User username
Port 2222
This will always connect you to the servername using username at port 2222