KB.15.15

Syntax:

crypto key zeroize ssh-client-known-hosts

Deletes the SSH client known hosts file.

You are prompted with a message:

Warning: The SSH client known hosts file will be deleted, continue [y/n] ?

Displaying open sessions

Syntax:

show session-list

Displays the active incoming and outgoing sessions.

Figure 178 Open sessions listing

Overview

The HP switches covered in this guide use Secure Shell version 2 (SSHv2) to provide remote access

to management functions on the switches via encrypted paths between the switch and management

station clients capable of SSH operation.

SSH provides Telnet-like functions but, unlike Telnet, SSH provides encrypted, authenticated

transactions. The authentication types include:

• Client public-key authentication

• Switch SSH and user password authentication

NOTE: SSH in HP switches is based on the OpenSSH software toolkit. For more information on

OpenSSH, visit www.openssh.com.

Client Public-Key authentication (login/operator level) with user password

authentication (enable/manager level)

This option uses one or more public keys (from clients) that must be stored on the switch. Only a

client with a private key that matches a stored public key can gain access to the switch, and the

same private key can be stored on one or more clients.

254 Secure Shell (SSH)