Using SSH instead of Telnet
Accessing remote network devices for monitoring purposes or for configuring it, is an everyday activity of any network administrator.
But which remote access method you use?
Maybe telnet is a good idea if you don’t care about security.
Always keep in mind that using telnet to communicate with your remote network devices is not secure because all the traffic that passes through the telnet session is sent unencrypted. Saying all the traffic includes also your passwords. This means that anyone who can eavesdrop your data can easily find your password.
The solution is called SSH (Secure Shell).
SSH allows us to log into remote devices securely by using encryption.
For encryption SSH uses the DH (Diffie Hellman) key exchange method.
All this extra features makes SSH appropriate for remote connections and gives to administrator one additional security tool.
Now if you are concerned about the configuration of SSH in your Cisco device, this is my next article.
Be patient for two days and till next time,
Stay Netralized…
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Absolutely use SSH over Telnet. There is really no good reason to use Telnet over SSH… at least not that I can think of.