Establishing A Telnet Connection; Establishing An Ssh Connection - HP 438031-B21 - 1:10Gb Ethernet BL-c Switch Command Reference Manual

Establishing a Telnet connection

A Telnet connection offers the convenience of accessing the switch from any workstation connected to the
network. Telnet provides the same options for user, operator, and administrator access as those available
through the console port. By default, Telnet is enabled on the switch. The switch supports four concurrent
Telnet connections.
Once the IP parameters are configured, you can access the CLI using a Telnet connection. To establish a
Telnet connection with the switch, run the Telnet program on the workstation and enter the telnet
command, followed by the switch IP address:
telnet <HP 1:10GbE switch IP address>
You will then be prompted to enter a password. The password entered determines the access level:
administrator, operator, or user. See the "Accessing the switch" section later in this chapter for description
of default passwords.

Establishing an SSH connection

Although a remote network administrator can manage the configuration of a switch via Telnet, this
method does not provide a secure connection. The Secure Shell (SSH) protocol enables you to securely
log into the switch over the network.
As a secure alternative to using Telnet to manage switch configuration, SSH ensures that all data sent over
the network is encrypted and secure. In order to use SSH, you must first configure it on the switch. See the
"Secure Shell Server configuration" section in the "Configuration Menu" chapter for information on how
to configure SSH.
The switch can perform only one session of key/cipher generation at a time. Therefore, an SSH/Secure
Copy (SCP) client will not be able to log in if the switch is performing key generation at that time or if
another client has just logged in before this client. Similarly, the system will fail to perform the key
generation if an SSH/SCP client is logging in at that time.
The supported SSH encryption and authentication methods are listed below.
Server Host Authentication—Client RSA authenticates the switch in the beginning of every connection
Key Exchange—RSA
Encryption:
○
AES256-CBC
○
AES192-CBC
○
AES128-CBC
○
3DES-CBC
○
3DES
○
ARCFOUR
User Authentication—Local password authentication; Remote Authentication Dial-in User Service
(RADIUS)
Command line interface
11