1-7 
 
z  You can configure a login header only when the service type is stelnet. For configuration of service 
types, refer to 
Specifying a Service Type for an SSH User.  
z  For details of the header command, refer to the corresponding section in Login Command. 
 
Configuring the SSH Server to Be Compatible with SSH1 Clients 
Follow these steps to configure the SSH server to be compatible with SSH1 clients: 
To do...  Use the command...  Remarks 
Enter system view 
system-view 
— 
Configure the SSH server to be 
compatible with SSH1 clients 
ssh server 
compatible-ssh1x 
enable 
Optional 
By default, the SSH server is 
compatible with SSH1 clients. 
 
Generating/Destroying Key Pairs 
This configuration task lets you generate or destroy a key pair. You must generate an RSA and DSA key 
pair on the server for an SSH client to log in successfully. When generating a key pair, you will be 
prompted to enter the key length in bits, which is between 512 and 2048. The default length is 1024. In 
case a key pair already exists, the system will ask whether to replace the existing key pair. 
Table 1-5 Follow these steps to create or destroy key pairs: 
To do...  Use the command...  Remarks 
Enter system view 
system-view 
— 
Generate an RSA key pair 
public-key local create rsa 
Required 
By default, no RSA key pair is 
created. 
Destroy the RSA key pair 
public-key local destroy rsa 
Optional 
Use the command to destroy 
the generated RSA key pair. 
Generate a DSA key pair 
public-key local create dsa 
Required 
By default, no DSA key pair is 
created. 
Destroy the DSA key pair 
public-key local destroy dsa 
Optional 
Use the command to destroy 
the generated DSA key pair.