3com WX3000 Manuel D’Utilisation

 

6-1 

You can configure source IP address or source interface for the Telnet server and Telnet client. This 

provides a way to manage services and enhances security. 

The source IP address specified for Telnet service packets is the IP address of a Loopback interface or 

VLAN interface. After you specify the IP address of a virtual Loopback interface or an unused VLAN 

interface as the source IP address of Telnet service packets, the IP address is used as the source IP 

address no matter which interface of the switching engine is used to transmit packets between the 

Telnet client and the Telnet server. This conceals the IP address of the actual interface used. As a result, 

external attacks are guarded and the security is improved. On the other hand, you can configure the 

Telnet server to accept only Telnet service packets with specific source IP addresses to make sure 

specific users can log in to the switching engine.  

This feature can be configured in either user view or system view. The configuration performed in user 

view takes effect for only the current session, while the configuration performed in system view takes 

effect for all the following sessions.  

Follow these steps to configure a source IP address for service packets in user view: 

Specify a source IP address for 
the Telnet client 

telnet remote-server source-ip ip-address 

Optional 

Specify a source interface for the 
Telnet client 

telnet remote-server source-interface 
interface-type interface-number 

Optional 

 

Follow these steps to configure a source IP address for service packets in system view: 

Specify a source IP address for 
Telnet server 

telnet-server source-ip ip-address 

Optional 

Specify a source interface for 
Telnet server 

telnet-server source-interface 
interface-type interface-number 

Optional 

Specify source IP address for 
Telnet client 

telnet source-ip ip-address 

Optional