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15389 posts

Uber Geek


# 247955 4-Mar-2019 21:08
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Has anyone successfully connected their Android phone to their Fritzbox using a VPN? I'd like to have my phone on the home LAN when I'm using mobile data.


I've set up a Fritz user who has access, and I have dynamic DNS set up. I followed the instructions on the Fritzbox that it showed after setting up the Fritz user, but the Android VPN client only says "connection unsuccessful", without giving more information. I wonder if a VPN client app would give more diagnostics? 


I note that at the bottom of the system -> users screen it says "Login for access from the home network is currently disabled. The users displayed are valid only for access from the Internet." I changed the settings for "login to the home network" to "login with fritz username and password". That wasn't ideal, as I didn't have a username and password for an admin user, but luckily 2degrees help was able to remotely change that setting for me and log me back in. Very helpful support there :) But I won't change that setting again in a hurry.


Any tips appreciated.

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15389 posts

Uber Geek


  # 2191632 5-Mar-2019 20:50
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Ok, so I worked it out... I had the wrong dynamic DNS name for my router. I'd set made up a name, but had to change it during registration as it was too long. As soon as I fixed that it worked fine. My connection now tunnels through my Fritzbox, and my phone public IP is my home internet IP.


The IPSec Identifier is the same as the username you set up in the Fritzbox.


Here's my overall steps:



  1. Fritzbox 7930: Internet -> Permit Access -> DynDNS. Set up dynamic DNS. I use Create an account there, set up the domain name you use, the email address you used to register the account (seems to work better than username), password.
  2. Fritzbox 7930: System -> Fritz!Box Users : Create a new user, ensure only "VPN" and "access from the internet" are ticked (though that "access from the internet one" never stays ticked once I save it). When you hit save it will give you all the details to put into Android. Write them down. You can't copy and paste them because they decided to make it an image, annoying.
  3. Android: turn off WiFi, turn on data (this won't work from inside the LAN).
  4. Android: Settings -> More (in the comms section) -> VPN. Enter the details from the Fritzbox. The IPSec Identifier is the username. Make sure you enter the IPSec preshared key not the user's password. Hit save, then enter the username and password.


Thanks all for the help working this out :)

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