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Disabling LAN ports on DrayTek Routers

Products:
Vigor 2832
Vigor 2925
Vigor 2952
Vigor 3220
Show all

Keywords:
disable port
lan ports
lan switch

It is possible to physically disable the LAN ports on some DrayTek routers, which can be used along with the Bind IP to MAC facility to increase security on a network. When a port is disabled, the port will be completely inactive and the LEDs will not light when a device is plugged into it.

This feature was added from firmware version 3.6.8 on the Vigor 2830 and 3.7.8 on the Vigor 2860.

Supported Routers List:

Router: From Firmware Version:
Vigor 2830 3.6.8
Vigor 2830v2 3.7.8
Vigor 2850 3.6.8
Vigor 2920 3.6.8
Vigor 2860 3.7.8
Vigor 2925 3.7.8

 

When disabling ports, it's important to take a configuration backup from the router before proceeding - if all ports are disabled, it will not be possible to access the router locally and if there is no way to access the router remotely then it would be necessary to factory reset the router to regain access to the router.


Disabling LAN ports on the router can be performed through the router's command line interface with this procedure. Replace 192.168.1.1 with your own router's IP address if you have changed it:

  1. On Windows go to the Start menu, select Run and on there type "cmd" and click OK,  or  if  the  Run  option is not present, type "cmd" in the "Start Search" textbox above the Start button and press enter.  Make sure that telnet is enabled in Windows, check this guide if it isn't available. Other operating systems also have an equivalent telnet program or app.
  2. Type "telnet 192.168.1.1"
  3. Enter the username of "admin", press enter, then enter the password for the router.
  4. Enter "port status" to check the current state of the ports and note which ports will be disabled:

    > port status
    % port 1 : link UP  , speed= 1000 Mbps, duplex= FULL, FlowControl= ON
    % port 2 : link UP  , speed= 1000 Mbps, duplex= FULL, FlowControl= ON
    % port 3 : link DOWN, speed= ---- Mbps, duplex= ----, FlowControl= --
    % port 4 : link DOWN, speed= ---- Mbps, duplex= ----, FlowControl= --
    % port 5 : link DOWN, speed= ---- Mbps, duplex= ----, FlowControl= --
    % port 6 : link DOWN, speed= ---- Mbps, duplex= ----, FlowControl= --
    % WAN2   : link DOWN, speed= ---- Mbps, duplex= ----, FlowControl= --
  5. To disable a port, type "port disable 3" to disable port 3 for instance, the port will then be inactive until re-enabled.

    > port disable 3
    Disable lan port [3] successfully.
  6. Check the status of the port by entering "port status", which will then show that the port is disabled:

    > port status
    % port 1 : link UP  , speed= 1000 Mbps, duplex= FULL, FlowControl= ON
    % port 2 : link UP  , speed= 1000 Mbps, duplex= FULL, FlowControl= ON
    % port 3 : <Disabled>
    % port 4 : link DOWN, speed= ---- Mbps, duplex= ----, FlowControl= --
    % port 5 : link DOWN, speed= ---- Mbps, duplex= ----, FlowControl= --
    % port 6 : link DOWN, speed= ---- Mbps, duplex= ----, FlowControl= --
    % WAN2   : link DOWN, speed= ---- Mbps, duplex= ----, FlowControl= --
  7. To re-enable a port, type "port enable 3" which will then allow the port to operate.

    > port enable 3
    Enable lan port [3] successfully.

 


 

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