HP Cisco Catalyst Blade Switch 3020 Cisco Catalyst Blade Switch 3020 for HP So - Page 159
Limitations, Configuring SSH, Configuration Guidelines, Setting Up the Switch to Run SSH
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Chapter 6 Configuring Switch-Based Authentication Configuring the Switch for Secure Shell Limitations These limitations apply to SSH: • 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. Configuring SSH This section has this configuration information: • Configuration Guidelines, page 6-39 • Setting Up the Switch to Run SSH, page 6-39 (required) • Configuring the SSH Server, page 6-41 (required only if you are configuring the switch as an SSH server) Configuration Guidelines Follow these guidelines when configuring the switch as an SSH server or SSH client: • An RSA key pair generated by a SSHv1 server can be used by an SSHv2 server, and the reverse. • 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 "Setting Up the Switch to Run SSH" section on page 6-39. • When generating the RSA key pair, the message No host name specified might appear. If it does, you must configure a hostname by using the hostname global configuration command. • When generating the RSA key pair, the message No domain specified might appear. If it does, you must configure an IP domain name by using the ip domain-name global configuration command. • When configuring the local authentication and authorization authentication method, make sure that AAA is disabled on the console. Setting Up the Switch to Run SSH Follow these steps to set up your switch to run SSH: 1. Download the cryptographic software image from Cisco.com. This step is required. For more information, see the release notes for this release. 2. Configure a hostname and IP domain name for the switch. Follow this procedure only if you are configuring the switch as an SSH server. OL-8915-01 Cisco Catalyst Blade Switch 3020 for HP Software Configuration Guide 6-39
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