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For the choice of keys to use, RSA is often selected over DSA because it has a the stronger key length of 2048 and 4096. DSA can only be 1024.

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ssh -V #Determine# Determine SSH client version
OpenSSH_5.2p1, OpenSSL 0.9.8l 5 Nov 2009

sshd -v #Determine SSH Server version (ignore the error message)
sshd: illegal option -- v
OpenSSH_5.2p1, OpenSSL 0.9.8l 5 Nov 2009
usage: sshd [-46DdeiqTt] [-b bits] [-C connection_spec] [-f config_file]
            [-g login_grace_time] [-h host_key_file] [-k key_gen_time]
            [-o option] [-p port] [-u len]

As long as the major number (the first digit) is close you should have no issues.

Installing SSH

This installs the SSH server and client,

sudo apt-get install ssh 
 

At this point we have installed ssh, and it is time to create the keys for the users who require SSH access to the server.  Since .  

Generate Public and Private Keys on Client Machine

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