Configuration Guide Configuring SSH
clients. Two authentication methods, including Radius server authentication and local authentication, are provided in the AAA
authentication method list to ensure reliability. The Radius server authentication method is preferred. If the Radius server
does not respond, it turns to the local authentication.
Figure 14-3 Networking Topology of SSH AAA Authentication
Deployment
The routes from the SSH clients to the SSH server are reachable, and the route from the SSH server to the Radius
server is also reachable.
Configure the SSH server on the network device that functions as an SSH client.
Configure the AAA parameters on the network device. When the AAA authentication mode is used, method lists are
created to define the identity authentication and types, and applied to a specified service or interface.
14.2.4 SSH Public Key Authentication
Scenario
SSH clients can use the public keys for authentication, and the public key algorithm can be RSA or DSA, as shown in Figure
14-4. SSH is configured on the client so that a secure connection is set up between the SSH client and the SSH server.
Figure 14-4 Network Topology for Public Key Authentication of SSH Users
Deployment
To implement public key authentication for the client, generate a key pair (RSA or DSA) on the client, configure the
public key on the SSH server, and select the public key authentication mode.
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