Radius Shared-Secret Key Authentication - HP 3500yl Series Access Security Manual

TACACS+ server application. (The encryption key is sometimes referred to as
"shared secret" or "secret" key.) For more information, see "TACACS+
Authentication" on page 5-1 in this guide.
TACACS+ shared secret (encryption) keys can be saved in a configuration file
by entering this command:
HP Switch(config)# tacacs-server key <keystring>
The option <keystring> is the encryption key (in clear text) used for secure
communication with all or a specific TACACS+ server.

RADIUS Shared-Secret Key Authentication

You can use RADIUS servers as the primary authentication method for users
who request access to a switch through Telnet, SSH, WebAgent, console, or
port-access (802.1X). The shared secret key is a text string used to encrypt
data in RADIUS packets transmitted between a switch and a RADIUS server
during authentication sessions. Both the switch and the server have a copy of
the key; the key is never transmitted across the network. For more
information, refer to "3. Configure the Switch To Access a RADIUS Server" on
page 6-15 in this guide.
RADIUS shared secret (encryption) keys can be saved in a configuration file
by entering this command:
HP Switch(config)# radius-server key <keystring>
The option <keystring> is the encryption key (in clear text) used for secure
communication with all or a specific RADIUS server.
Configuring Username and Password Security
Saving Security Credentials in a Config File
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