H3C Technologies H3C S5120 Series Switches - Manual (Page 487)

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Setting the SSH Management Parameters
SSH management includes:
z Enabling the SSH server to be compatible with SSH1 client
z Setting the server key pair update interval, applicable to users using SSH1 client
z Setting the SSH user authentication timeout period
z Setting the maximum number of SSH authentication attempts
Setting the above parameters can help avoid malicious guess at and cracking of the keys and
usernames, securing your SSH connections.
Follow these steps to set the SSH management parameters:
To do… Use the command… Remarks
Enter system view system-view —
Enable the SSH server to
support SSH1 clients ssh server compatible-ssh1x
enable
Optional
By default, the SSH server
supports SSH1 clients.
Set the RSA server key pair
update interval ssh server rekey-interval
hours
Optional
0 by default, that is, the RSA
server key pair is not updated.
Set the SSH user
authentication timeout period
ssh server
authentication-timeout
time-out-value
Optional
60 seconds by default
Set the maximum number of
SSH authentication attempts ssh server
authentication-retries times Optional
3 by default
Authentication will fail if the number of authentication attempts (including both publickey and password
authentication) exceeds that specified in the ssh server authentication-retries command.
Configuring the Device as an SSH Client
SSH Client Configuration Task List
Complete the following tasks to configure an SSH client:
Task Remarks
Specifying a Source IP address/Interface for the SSH Client Optional
Configuring Whether First-time Authentication is Supported Optional
Establishing a Connection Between the SSH Client and the Server Required