LevelOne GTL-2881, User Manual

Page: 307 / 706

Chapter 12
| Security Measures
Configuring the Secure Shell
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To display or clear the SSH host key pair:
1.
Click Security, SSH.
2.
Select Configure Host Key from the Step list.
3.
Select Show from the Action list.
4.
Select the option to save the host key from memory to flash by clicking Save, or
select the host-key type to clear and click Clear.
Figure 192: Showing the SSH Host Key Pair
Importing
User Public Keys
Use the Security > SSH (Configure User Key - Copy) page to upload a user’s public
key to the switch. This public key must be stored on the switch for the user to be
able to log in using the public key authentication mechanism. If the user’s public
key does not exist on the switch, SSH will revert to the interactive password
authentication mechanism to complete authentication.
Parameters
These parameters are displayed:
◆
User Name – This drop-down box selects the user who’s public key you wish to
manage. Note that you must first create users on the User Accounts page (see
“Configuring User Accounts” on page 284 ).
◆
User Key Type – The type of public key to upload.
■
RSA: The switch accepts a RSA version 1 encrypted public key.
■
DSA: The switch accepts a DSA version 2 encrypted public key.
The SSH server uses RSA or DSA for key exchange when the client first
establishes a connection with the switch, and then negotiates with the client to
select either DES (56-bit) or 3DES (168-bit) for data encryption.