3Com WX3000 operation manual Establish the connection between the SSH client and server

Follow these steps to enable the device to support first-time authentication:

To do…	Use the command…	Remarks
Enter system view	system-view	—
Enable the device to support		Optional
	ssh client first-time enable	By default, the client is enabled
first-time authentication
		to run initial authentication.

Follow these steps to disable first-time authentication support:

To do…	Use the command…	Remarks
Enter system view	system-view	—
Disable first-time authentication		Required
	undo ssh client first-time	By default, the client is enabled
support		to run first-time authentication.
		Required
Configure server public key	Refer to Configuring the Client	The method of configuring
		server public key on the client is
	Public Key on the Server
		similar to that of configuring
		client public key on the server.
Specify the host key name of	ssh client { server-ip
	server-name } assign	Required
the server	{ publickey rsa-key }
	keyname

Establish the connection between the SSH client and server

The client’s method of establishing an SSH connection to the SSH server varies with authentication types. See the table below for details.

Follow these steps to establish an SSH connection:

To do…		Use the command…	Remarks
Enter system view		system-view	—
			Required
		ssh2 { host-ip host-name }	In this command, you can also
			specify the preferred key
		[ port-num] [ identity-key { dsa
		rsa } prefer_kex	exchange algorithm, encryption
			algorithms and HMAC
		{ dh_group1
			algorithms between the server
		dh_exchange_group }
Start the client to establish a			and client.
		prefer_ctos_cipher { des
connection with an SSH server		aes128 } prefer_stoc_cipher	HMAC: Hash-based message
		{ des aes128 }	authentication code
		prefer_ctos_hmac { sha1	Note that:
		sha1_96 md5 md5_96 }
			The identity-keykeyword is
		prefer_stoc_hmac { sha1
			unnecessary in password
	sha1_96 md5 md5_96 } ] *
			authentication and optional in
			public key authentication.

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