Limitations; Configuring Ssh; Configuration Guidelines - Cisco Catalyst 3120 Software Manual

Chapter 7 Configuring Switch-Based Authentication
SSH also supports these user authentication methods:
•
•
•
Note This software release does not support IP Security (IPSec).

Limitations

These limitations apply to SSH:
•
•
•
•

Configuring SSH

This section has this configuration information:
•
•
•

Configuration Guidelines

Follow these guidelines when configuring the switch as an SSH server or SSH client:
•
•
•
•
OL-12247-01
TACACS+ (for more information, see the
page 7-10)
RADIUS (for more information, see the
page 7-17)
Local authentication and authorization (for more information, see the
Local Authentication and Authorization" section on page
The switch supports Rivest, Shamir, and Adelman (RSA) authentication.
SSH supports only the execution-shell application.
The SSH server and the SSH client are supported only on DES (56-bit) and 3DES (168-bit) data
encryption software.
The switch does not support the Advanced Encryption Standard (AES) symmetric encryption
algorithm.
Configuration Guidelines, page 7-39
Setting Up the Switch to Run SSH, page 7-40
Configuring the SSH Server, page 7-41
server)
An RSA key pair generated by a SSHv1 server can be used by an SSHv2 server, and the reverse.
If the SSH server is running on a stack master and the stack master fails, the new stack master uses
the RSA key pair generated by the previous stack master.
If you get CLI error messages after entering the crypto key generate rsa global configuration
command, an RSA key pair has not been generated. Reconfigure the hostname and domain, and then
enter the crypto key generate rsa command. For more information, see the
to Run SSH" section on page
When generating the RSA key pair, the message
you must configure a hostname by using the hostname global configuration command.
"Controlling Switch Access with TACACS+" section on
"Controlling Switch Access with RADIUS" section on
(required)
(required only if you are configuring the switch as an SSH
7-40.
No host name specified
Cisco Catalyst Blade Switch 3120 for HP Software Configuration Guide
Configuring the Switch for Secure Shell
"Configuring the Switch for
7-36)
"Setting Up the Switch
might appear. If it does,
7-39