7-17 Specifying Source for Telnet PacketsWhen specifying source IP address/interface for Telnet packets, go to these sections for information youare interested in:z Introductionz Specifying Source IP address/Interface for Telnet Packetsz Displaying the source IP address/Interface Specified for Telnet PacketsIntroductionTo improve security and make it easier to manage services, you can specify source IPaddresses/interfaces for Telnet clients.Usually, VLAN interface IP addresses and Loopback interface IP addresses are used as the source IPaddresses of Telnet packets. After you specify the IP address of a VLAN interface or a Loopbackinterface as the source IP address of Telnet packets, all the packets exchanged between the Telnetclient and the Telnet server use the IP address as their source IP addresses, regardless of the portsthrough which they are transmitted. In such a way, the actual IP addresses used are concealed. Thishelps to improve security. Specifying source IP address/interfaces for Telnet packets also provides away to successfully connect to servers that only accept packets with specific source IP addresses.Specifying Source IP address/Interface for Telnet PacketsThe configuration can be performed in user view and system view. The configuration performed in userview only applies to the current session. Whereas the configuration performed in system view applies toall the subsequent sessions. Priority in user view is higher than that in system view.Specifying source IP address/interface for Telnet packets in user viewFollow these steps to specify source IP address/interface for Telnet packets in user view:To do… Use the command… RemarksSpecify source IPaddress/interface for Telnetpackets (the switch operates asa Telnet client)telnet remote-system[ port-number ] [ source { ipip-address | interfaceinterface-typeinterface-number } ]OptionalBy default, no source IPaddress/interface is specified.Specifying source IP address/interface for Telnet packets in system viewFollow these steps to specify source IP address/interface for Telnet packets in system view:To do… Use the command… RemarksEnter system view system-view —
