1-20To do... Use the command... RemarksStart the client toestablish a connectionwith an SSH serverssh2 { host-ip | host-name }[ port-num ] [ identity-key{ dsa | rsa } | prefer_kex{ dh_group1 |dh_exchange_group } |prefer_ctos_cipher { des |aes128 } | prefer_stoc_cipher{ des | aes128 } |prefer_ctos_hmac { sha1 |sha1_96 | md5 | md5_96 } |prefer_stoc_hmac { sha1 |sha1_96 | md5 | md5_96 } ] *RequiredIn this command, you can also specifythe preferred key exchange algorithm,encryption algorithms and HMACalgorithms between the server andclient.HMAC: Hash-based messageauthentication codeNote that:The identity-key keyword isunnecessary in passwordauthentication and optional in publickey authentication.When logging into the SSH server using public key authentication, an SSH client needs to read its localprivate key for authentication. As two algorithms (RSA or DSA) are available, the identity-key keywordmust be used to specify one algorithm in order to get the correct private key.Displaying and Maintaining SSH ConfigurationTo do... Use the command... RemarksDisplay the public key part of the currentswitch’s key pairsdisplay public-key local { dsa |rsa } publicDisplay information about locally savedpublic keys of SSH peersdisplay public-key peer [ brief |name pubkey-name ]Display SSH status and session information display ssh server { session |status }Display SSH user information display ssh user-information[ username ]Display the mappings between host publickeys and SSH servers saved on a client display ssh server-infoAvailable inany viewComparison of SSH Commands with the Same FunctionsAfter the SSH protocol supports the DSA asymmetric key algorithm, some SSH configurationcommands are changed. For the sake of SSH configuration compatibility, the original commands arestill supported. Table 1-18 lists both the original commands and current commands.Table 1-18 List of SSH configuration commands with the same functionsOperation Original commands Current commandsDisplay local RSA publickey(s) display rsa local-key-pair public display public-key local rsapublic
