Overview: if we have provided you with a bespoke L2TP connection, perhaps to access a client device behind NAT or dynamic IP, then this article will show you how to connect a MikroTik device to the VPN.

You will need the following information before you begin:

  • Admin details to acces the "Luci" web GUI of the Teltonika device
  • L2TP server IP: ---.---.---.---
  • L2TP username: _ _ _ _ _ _
  • L2TP password: _ _ _ _ _ _
  • IP Sec pre-shared key: _ _ _ _ _ _ 
  • Public HTTP port number: _ _ _ _ _

WARNING: Before you add this L2TP connection, please set a VERY complex password of at least 16 characters - including special symbols - in order to reduce your device security risks.

From the web GUI of the Teltonkia device navigate to Services > VPN > L2TP [tab] >

Enter the "New configuration name" as "RemoteL2TP", then click Add New [button]

Click Edit [button] and enter the details as per below, then click Save [button]:

Enable: Yes (enabled)

Server: {L2TP server IP}

Username: {L2TP username}

Password: {L2TP password}

Authentication: {IP Sec pre-shared key}

Keep alive: 300

Default route: No (disabled)

Once saved, be patient as Teltonkia devices are often low-power CPUs than can take 5+ minutes to reconfigure their network stack and IP routes!

Once the link is up (System> Administration > Diagnostics [tab] > Ping then you can test accessing the device publically:

http://xxx.xxx.xxx.xxx:yyyyy (replace xxx with the L2TP server IP, and replace yyyy with the public HTTP port number)

You should now have access to port 80 on the local device; if you need another port (such as HTTPS port 443) then simply ask us for the port forwarding rule to be modified for this VPN client).