Enabling and disabling inbound Telnet access

In the default configuration, inbound Telnet access is enabled.

Enabling and disabling inbound Telnet access

To enable inbound Telnet access, do one of the following:

Prerequisites

Before you enable or disable inbound Telnet access on a switch, you must insure that the switch has a separate out-of-band management port if you want to use an out-of-band management port for Telnet access. See Appendix I, "Network Out-of-Band Management" in this guide for more information about out-of-band management.

Procedure
  1. Use the telnet-server command to enable inbound Telnet access through the data ports.
  2. Use the following command to enable inbound Telnet access through specific ports: telnet-server [ listen < oobm | data | both > ]
    Data ports ( listen data option), out-of-band management ports (listen oobm option), or both data and out-of-band management ports (listen both) can be specified.

To disable inbound Telnet access, do one of the following:

  • Use the no telnet-server command to disable inbound Telnet access through the data ports.

  • Use the following command to disable inbound Telnet access through specific ports:no telnet-server [ listen < oobm | data | both > ]Data ports (listen data option), out-of-band management ports (listen oobm option), or both data and out-of-band management ports (listen both) can be specified.

Examples

To disable inbound Telnet access: 

switch(config)# no telnet-server

To re-enable inbound Telnet access: 

switch(config)# telnet-server