Cisco WS-C2960-24TC-S Software Guide - Page 171
Setting Up the Switch to Run SSH, ip domain-name, crypto key zeroize rsa, con terminal, hostname
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Chapter 8 Configuring Switch-Based Authentication Configuring the Switch for Secure Shell • 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. 3. Generate an RSA key pair for the switch, which automatically enables SSH. Follow this procedure only if you are configuring the switch as an SSH server. 4. Configure user authentication for local or remote access. This step is required. For more information, see the "Configuring the Switch for Local Authentication and Authorization" section on page 8-32. Beginning in privileged EXEC mode, follow these steps to configure a hostname and an IP domain name and to generate an RSA key pair. This procedure is required if you are configuring the switch as an SSH server. Step 1 Step 2 Step 3 Step 4 Command configure terminal hostname hostname ip domain-name domain_name crypto key generate rsa Step 5 Step 6 Step 7 end show ip ssh or show ssh copy running-config startup-config Purpose Enter global configuration mode. Configure a hostname for your switch. Configure a host domain for your switch. Enable the SSH server for local and remote authentication on the switch and generate an RSA key pair. We recommend that a minimum modulus size of 1024 bits. When you generate RSA keys, you are prompted to enter a modulus length. A longer modulus length might be more secure, but it takes longer to generate and to use. Return to privileged EXEC mode. Show the version and configuration information for your SSH server. Show the status of the SSH server on the switch. (Optional) Save your entries in the configuration file. To delete the RSA key pair, use the crypto key zeroize rsa global configuration command. After the RSA key pair is deleted, the SSH server is automatically disabled. OL-8603-04 Catalyst 2960 Switch Software Configuration Guide 8-35
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