Dell C1048P Port Extender Networking Configuration Guide for the C9000 Series - Page 933

The following example shows you how to configure a cipher list. Dell(conf)#ip ssh server cipher 3des-cbc aes128-cbc aes128-ctr Secure Shell Authentication Secure Shell (SSH) is disabled by default. Enable SSH using the ip ssh server enable command. SSH supports three methods of authentication: • Enabling SSH Authentication by Password • Using RSA Authentication of SSH • Configuring Host-Based SSH Authentication Important Points to Remember • If you enable more than one method, the order in which the methods are preferred is based on the ssh_config file on the Unix machine. • When you enable all the three authentication methods, password authentication is the backup method when the RSA method fails. • The files known_hosts and known_hosts2 are generated when a user tries to SSH using version 1 or version 2, respectively. Enabling SSH Authentication by Password Authenticate an SSH client by prompting for a password when attempting to connect to the Dell Networking system. This setup is the simplest method of authentication and uses SSH version 1. To enable SSH password authentication, use the following command. • Enable SSH password authentication. CONFIGURATION mode ip ssh password-authentication enable Example of Enabling SSH Password Authentication To view your SSH configuration, use the show ip ssh command from EXEC Privilege mode. Dell(conf)#ip ssh server enable % Please wait while SSH Daemon initializes ... done. Dell(conf)#ip ssh password-authentication enable Dell#sh ip ssh SSH server : enabled. Password Authentication : enabled. Hostbased Authentication : disabled. RSA Authentication : disabled. Using RSA Authentication of SSH The following procedure authenticates an SSH client based on an RSA key using RSA authentication. This method uses SSH version 2. 1. On the SSH client (UNIX machine), generate an RSA key, as shown in the following example. 2. Copy the public key id_rsa.pub to the Dell Networking system. 3. Disable password authentication if enabled. CONFIGURATION mode Security 933