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26 CCM840/1640 Installer/User Guide
To enable SSH session access to the CCM:
1. Issue a Show Server Security command to ensure that you are using an
authentication method other than None.
SHOW SERVER SECURITY
2. Issue a Server SSH command with the Enable parameter. You may also
specify an authentication method.
SERVER SSH ENABLE AUTH=<auth>
If an authentication method is not specifi ed, the previous authentication
parameter will be used. The default value is AUTH=PW.
3. If you are enabling SSH for the fi rst time, you are advised that all other
CCM sessions will be terminated. Enter Y to continue or N to cancel.
4. If you are reenabling SSH, you are prompted to use the existing SSH server
key or generate a new key. Enter Y to use the existing key or N to generate
a new key.
For more information, see Server SSH command in Chapter 5.
To disable SSH session access to the CCM:
Issue a Server SSH command with the Disable parameter.
SERVER SSH DISABLE
When SSH is disabled, the CCM operates in plain text mode.
To display SSH information:
Issue a Show Server Security command.
SHOW SERVER SECURITY
If SSH is enabled, the display will include SSH2. Regardless of whether SSH is
enabled, the display will indicate the authentication method that was specifi ed
with the Server SSH command.
Enabling plain text Telnet and SSH connections
Plain text (non-encrypted) Telnet connections are enabled by default.
If you enable SSH connections using the Server Security command and the
Encrypt=SSH parameter, plain text Telnet connections will be disabled.
However, if you enable SSH connections with the Server SSH command, both
plain text and SSH connections will be allowed.