Security | 497Figure 28-10. Enabling SSH Password AuthenticationRSA Authentication of SSHTo authenticates an SSH client based on an RSA key using RSA authentication, follow these steps. Thismethod uses SSH version 2:Host-Based SSH AuthenticationAuthenticate a particular host. This method uses SSH version 2.Step Task Command Syntax Command Mode1 On the SSH client (Unix machine), generate an RSA key (Figure 28-11).Figure 28-11. Generating RSA Keys2 Copy the public key id_rsa.pub to the Dell Force10 system.3 Disable password authentication if enabled. no ip ssh password-authenticationenableCONFIGURATION4 Enable RSA authentication. ip ssh rsa-authentication enable EXEC Privilege5 Bind the public keys to RSA authentication. ip ssh rsa-authenticationmy-authorized-keys flash://public_keyEXEC PrivilegeFTOS(conf)#ip ssh server enable% Please wait while SSH Daemon initializes ... done.FTOS(conf)#ip ssh password-authentication enableFTOS#sh ip sshSSH server : enabled.Password Authentication : enabled.Hostbased Authentication : disabled.RSA Authentication : disabled.Vty Encryption Remote IPadmin@Unix_client#ssh-keygen -t rsaGenerating public/private rsa key pair.Enter file in which to save the key (/home/admin/.ssh/id_rsa):/home/admin/.ssh/id_rsa already exists.Overwrite (y/n)? yEnter passphrase (empty for no passphrase):Enter same passphrase again:Your identification has been saved in /home/admin/.ssh/id_rsa.Your public key has been saved in /home/admin/.ssh/id_rsa.pub.
