Ssh Server Configuration - 3Com 8800 Configuration Manual

3Com Switch 8800 Configuration Guide
The server initiates a procedure to authenticate the user. If the server is configured
not to authenticate the user, the process proceeds to session request phase
directly.
The client employs an authentication mode to authenticate the server till the
authentication succeeds or the server tears down the connection because of
timeout.
Note:
SSH provides two authentication modes: password authentication and RSA
authentication.
1) Password authentication procedure:
The client sends the username and password to the server;
The server compares the username and password sent from the client with the local
configuration. If it finds an exact match, the authentication succeeds.
2) RSA authentication procedure:
The server configures an RSA public key for the client;
The client sends its RSA public key member module to the server;
The server performs validity authentication on the member module. If the
authentication succeeds, the server generates a random number, encrypts it using
the RSA public key from the client, and sends the encrypted information back to the
client;
Both the server and the client uses the random number and the session ID with the
length of 16 characters as parameters to calculate the authentication data;
The client sends the authentication data it generates to the server;
The server compares the authentication data from the client with that locally
calculated. If they match, the authentication succeeds.
4) Session request: If the authentication succeeds, the client sends a session
request to the server. When the server has successfully processed the request,
SSH enters the interactive session phase.
5) Interactive session: The client and the server exchange data till the session is
over.

50.1.2 SSH Server Configuration

The following table describes the SSH server configuration tasks.
Table 50-1 SSH2.0 Configuration tasks
Num
1 Entering system view
Item
<SW8800> system-view
50-3
Chapter 50 SSH Terminal Service
Command Description
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