Writing a good ssh config file can make your life a whole lot easier especially if your an Linux Admin.
I have written a basic config file below which should be saved in the following location “~/.ssh/config”, when attempting to ssh its the first place SSH looks for instructions by default.
After the config if will go through in detail explain what each line does.
LocalForward 1521 10.1.1.99:1521
Host: this is like an alias, it will once you attempt to ssh to it, it will resolve using the Hostname field.
Hostname: Look above
Port: The port the ssh server is running on
User: the username you have on the server
Identityfile: This is your SSH private key location
ForwardX11: This is to allow you to see an X GUI session from the remote computer.
Keepalive: the next three are to enable keepalive which will ensure your SSH session stays active even after a period of inactivity. The two subsequent options enable you to configure the frequency of the keepalive packets.
Compression: this enables compression, this is especially useful over slow links. You will need to do more research for the senario which suits your connection and security requirements.
DynamicForward: This enables you to tunnle your connection to the remote host on the specified port. Simply setup your browser on socks5 proxy and point to localhost:port.
LocalForward: This enables you to setup tunneling. Simply specify your local reserved port and your remote IP and port which you want tunneled.