I have a problem with VPN. I checked with Swisscom shop. Staff there could not help because they were salesmen not technicians. The techy guy on Swisscom hotline could not figure out the issue and pointed me to the Community website, so here I am.
I have an InOneHome package for over a year now and recently replaced Internet-Box 2 with a slim Internet-Box 3. Everything seems to be working so far, except the VPN connection. As a matter of fact, my Swisscom VPN has never worked for me from the first time I tried a year ago.
I created my own DynDNS address (mingle.internet-box.ch) on MySwisscom homepage (under the menu Network with Expert mode on). Shared key for VPN and password for one individual user plus the DynDNS address have been duly entered in the VPN setup of my Android phone and my laptop PC.
Yet, every attempt has failed to connect to my VPN from outside my home, including from Swisscom free Wfif in a Swisscom Shop.
My Android phone showed 'Connection unsuccessful' without giving details of the problem.
My laptop showed the following error message after failure to connect to my home VPN from a public WiFI:
'Cant't connect to HomeVPN
The L2TP connection attempt failed because the security layer encoutered a processing error during initial negiations with the remote computer'
(Sorry. Impossible to embed screenshots in the post)
When I manually entered my DynDNS mingle.internet-box.ch in the address pane a browser, it was not working. The following error messages showed up:
This page isn’t working
mingle.internet-box.ch didn’t send any data. ERR_EMPTY_RESPONSE (Chrome browser)
The connection was reset
The connection to the server was reset while the page was loading. (Firefox browser)
I would be grateful for enlightenment and help on solving my VPN mystry.
@Helvet it depends if you are using an own VPN-Service (like on a PC or Raspberry Pi) then you should route the Port of the VPN-App (lets say 1194 for OpenVPN) to your Device into the Port-Forwarding-Options.
If you are talking from the built-in VPN from the Internet-Box and the Configuration as following is not working, try to deactivate VPN and DynDNS. Then restart the Box and reenable the VPN and DynDNS. Then it could probably work...
I expericened personally, that it doesn't work correctly on my Huawei Mate 20-Device, but on my old iPhone 7 it worked. It seems to be a problem with the VPN-Settings of my Android Device - in my Case.
If you are stuck also after the troubleshooting as told above, please do not hesitate to write here again. It would be glad if you can tell us exactly which device you are using, including Version and Operating-System.
This can happen when you test the VPN connection at home. If you are connected to your own home network, you cannot connect to the VPN. Check the VPN connection when you are not at home and not connected to your home network.
Can you try if it's working when using mobile instead of WiFi on your mobile.