Setting The Ssh Management Parameters - 3Com 4500G Family Configuration Manual

A user without an SSH account can still pass password authentication and log into the server
through Stelnet or SFTP, as long as the user can pass AAA authentication and the service type is
SSH.
An SSH server supports up to 1024 SSH users.
The service type of an SSH user can be Stelnet (Secure Telnet) or SFTP (Secure FTP). For
information about Stelnet, refer to
Overview.
For successful login through SFTP, you must set the user service type to sftp or all.
As SSH1 does not support service type sftp, if the client uses SSH1 to log into the server, you must
set the service type to stelnet or all on the server. Otherwise, the client will fail to log in.
The working folder of an SFTP user is subject to the user authentication method. For a user using
only password authentication, the working folder is the AAA authorized one. For a user using only
publickey authentication or using both the publickey and password authentication methods, the
working folder is the one set by using the ssh user command.
The configured authentication method takes effect only for users logging in after the configuration.
For users using publickey authentication:
You must configure on the device the corresponding username and public keys.
After login, the commands available for a user are determined by the user privilege level, which is
configured with the user privilege level command on the user interface.
For users using password authentication:
You can configure the accounting information either on the device or on the remote authentication
server (such as RADIUS authentication server).
After login, the commands available to a user are determined by AAA authorization.

Setting the SSH Management Parameters

SSH management includes:
Enabling the SSH server to be compatible with SSH1 client
Setting the server key pair update interval, applicable to users using SSH1 client
Setting the SSH user authentication timeout period
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...
Enter system view
SSH2.0 Overview. For information about SFTP, refer to
Use the command...
system-view
1-8
Remarks
—
SFTP