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Connect an Android Device to NG Firewall via L2TP

This article will describe how to configure L2TP connections on Android devices.  

 

The first step is to enable L2TP/XAuth/IKEv2 Server over IPSec on your NG Firewall appliance.  You can find the configuration by clicking the Settings button on the IPSec app, then browsing to the VPN Config tab.  On this page enable the "Enable L2TP/XAuth/IKEv2 Server" option, add an IPSec Secret and configure the User Authentication.  

Be sure to record the following fields:

  • IPsec secret
  • Username/Password configured under User Authentication
  • Server Listen Address

 


Next it is time to configure the Android device.  The following screen shots were taken on a Google Nexus 5x running Android version 7.1.2.  Your configuration may appear differently depending on device and version.

 

  1. Go to Settings
    Android-Apps.png

  2. Then select More under Wireless & networks.
    Android-Settings.png

  3. Select VPN.
    Android-Wireless_NetworkSettings.png

  4. Tap the Add icon.
    Android-VPN.png

  5.  Make sure L2TP/IPSec PSK is selected at the top and NOT PPTP or IPSec.
    Android-VPNType.png

  6. Fill out the following fields.
    • Name - Can be anything, this is for your reference only.

    • Server address - This is the IP address (or domain name if configured) of your NG Firewall.  This is the Server Listen Address on the NG Firewall.

    • IPSec pre-shared key- This is the IPsec secret on the NG Firewall

    • Username - This is the username configured under User Authentication on the NG Firewall

    • Password - This is the password configured under User Authentication on the NG Firewall.  Leave it blank if you want the user to enter the password every time the device connects.

     Android-AddVPN.png

  7. Tap Save in the lower right corner.

  8. You should now be able to connect or disconnect from the NG Firewall via L2TP over IPSec by tapping the VPN profile.  
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