3com 4210 PWR 9-Port 3CR17341-91-ME User Manual

C

HAPTER

 36: SSH C

ONFIGURATION

An SSH client software or SSH2-capable switch can serve as an SSH client to access 
the SSH server.

A variety of SSH client software are available, such as PuTTY and OpenSSH. For an 
SSH client to establish a connection with an SSH server, use the following 
commands:

n 

■

Selecting the protocol for remote connection as SSH. Usually, a client can use a 
variety of remote connection protocols, such as Telnet, Rlogin, and SSH. To 
establish an SSH connection, you must select SSH

■

When a Switch 4210 acts as the SSH server, select 2.0 for the clients.

■

Specifying the private key file. On the server, if public key authentication is 
enabled for an SSH user and a public key is set for the user, the private key file 
corresponding to the public key must be specified on the client. RSA key pairs 
and DSA key pairs are generated by a tool of the client software.

The following takes the client software of PuTTY, PuTTYGen and SSHKEY as 
examples to illustrate how to configure the SSH client:

To generate a client key, run PuTTYGen.exe, and select from the Parameters area 
the type of key you want to generate, either SSH-2 RSA or SSH-2 DSA, then click 
Generate.

Table 311   SSH client configuration tasks

Configuring the SSH 
client 

Using an SSH client software 

Use either approach 

On an SSH2-capable switch 

Table 312   Configuration tasks for using a client software

Required for publickey authentication; 
unnecessary for password 
authentication 

Required 

Required 

Required 

Required for publickey authentication; 
unnecessary for password 
authentication 

Required for publickey authentication; 
unnecessary for password 
authentication