What Does SSH Mean in 200-301?
Full form: Secure Shell
Also known as: Secure Shell
Quick Definition
An encrypted remote management protocol used to securely access Cisco devices.
Full Definition
SSH provides encrypted remote access to Cisco routers and switches using TCP port 22. SSH replaces Telnet, which sends data (including passwords) in cleartext. To enable SSH on Cisco IOS: configure a hostname and domain name, generate RSA keys, configure VTY lines to use SSH, and create local user accounts. SSHv2 is more secure than SSHv1 and should be explicitly configured.
CLI Command
hostname R1 ip domain-name example.com crypto key generate rsa modulus 2048 ip ssh version 2 line vty 0 4 transport input ssh login local
Exam Trap — Don't Get Fooled
SSH requires: hostname, domain-name, RSA key pair, and local user accounts (or AAA). Without all four, SSH will not function. Telnet (port 23) should be disabled on production networks.
Related 200-301 Terms
An unencrypted remote management protocol that should be replaced by SSH.
Authentication, Authorisation, and Accounting — the three-component framework for controlling network access.
An open-standard AAA protocol that uses UDP and encrypts only the password.
A Cisco-developed AAA protocol that uses TCP and encrypts the entire authentication payload.
Frequently Asked Questions
What does SSH mean on the 200-301 exam?
SSH provides encrypted remote access to Cisco routers and switches using TCP port 22. SSH replaces Telnet, which sends data (including passwords) in cleartext. To enable SSH on Cisco IOS: configure a hostname and domain name, generate RSA keys, configure VTY lines to use SSH, and create local user accounts. SSHv2 is more secure than SSHv1 and should be explicitly configured.
How does SSH appear as a trap on the 200-301?
SSH requires: hostname, domain-name, RSA key pair, and local user accounts (or AAA). Without all four, SSH will not function. Telnet (port 23) should be disabled on production networks.
How important is SSH on the 200-301 exam?
SSH falls under the Security domain of the 200-301 exam. Understanding it in context with related terms like telnet and aaa is essential for answering scenario-based questions correctly.