3com 4210 PWR 9-Port 3CR17341-91-ME ユーザーズマニュアル

remote server. And the user can use its username and password configured on 
the remote server to access the network.

■

Both publickey and rsa indicate public key authentication. They are 
implemented with the same method.

■

Under the publickey authentication mode, the level of commands available to 
a logged-in SSH user can be configured using the user privilege level 
command on the server, and all the users with this authentication mode will 
enjoy this level.

■

Under the password or password-publickey authentication mode, the level 
of commands available to a logged-in SSH user is determined by the AAA 
scheme. Meanwhile, for different users, the available levels of commands are 
also different. 

■

Under the all authentication mode, the level of commands available to a 
logged-in SSH user is determined by the actual authentication method used for 
the user. 

c 

The SSH server provides a number of management functions that prevent illegal 
operations such as malicious password guess, to further guarantee the security of 
SSH connections.

c 

■

You can configure a login header only when the service type is stelnet. For 
configuration of service types, see “Specifying a Service Type for an SSH User”.

Table 305   Specify the service type of an SSH user:

Enter system view 

system-view 

- 

Specify a service type for an 
SSH user 

ssh user username 
service-type { stelnet | sftp | 
all } 

Required

stelnet by default

Table 306   Configure SSH management

Enter system view 

system-view 

- 

Set SSH authentication 
timeout time 

ssh server timeout seconds  Optional

By default, the timeout time is 
60 seconds. 

Set SSH authentication retry 
times 

ssh server 
authentication-retries times 

Optional

By default, the number of 
retry times is 3. 

Configure a login header 

header shell text 

Optional

By default, no login header is 
configured.