SMC Networks SMC6752AL2 Manual De Usuario

4-49

a. The client sends its public key to the switch. 
b. The switch compares the client's public key to those stored in memory. 
c. If a match is found, the switch uses the public key to encrypt a random 

sequence of bytes, and sends this string to the client. 

d. The client uses its private key to decrypt the bytes, and sends the 

decrypted bytes back to the switch. 

e. The switch compares the decrypted bytes to the original bytes it sent. If 

the two sets match, this means that the client's private key corresponds 
to an authorized public key, and the client is authenticated. 

Note: To use SSH with only password authentication, the host public key 

must still be given to the client, either during initial connection or 
manually entered into the known host file. However, you do not 
need to configure the client’s keys.

This command enables the Secure Shell (SSH) server on this switch. Use 
the no form to disable this service.

[no] ip ssh server

Disabled

Global Configuration

• The SSH server supports up to four client sessions. The maximum 

number of client sessions includes both current Telnet sessions and 
SSH sessions.

• The SSH server uses DSA or RSA for key exchange when the client 

first establishes a connection with the switch, and then negotiates with 
the client to select either DES (56-bit) or 3DES (168-bit) for data 
encryption.