I have a Samsung Galaxy S7 running Android 6.0.1 and a Sophos UTM device with firmware version 9.404-5 (holding off on updates because I was bit by the MTU "feature"). I have almost literally tried every combination of IPsec, L2TP, and PPTP configuration that exists on the phone and firewall and cannot get any of them to work. PPTP was my last resort due to what I've heard about it and I can't even get that to connect. For troubleshooting I turned on debugging and disabled every form of protection on the UTM and started allowing all traffic in through the firewall from my phone's IP and out from internal network to my phone -- which was not on wifi.
I used to have the Galaxy S6 and was able to use IPsec without issue but the S7's VPN settings are far more limited and I can't figure out a combination of settings that will work.
The phone's VPN settings allow for:
- IPSec IKEv2 RSA
- IPSec IKEv2 PSK
- IPSec Xauth RSA
- IPSec Xauth PSK
- IPSec Hybrid RSA
- L2TP/IPSec RSA
- L2TP/IPSec PSK
The only configurable options on the phone are server ip, user cert, CA cert, server cert, PFS (yes/no), PSK, IPSec identifier, L2TP Secret, username, and password.
Unlike the S6 I cannot change the IKE encryption algorithm, IKE authentication algorithm, IKE SA lifetime, etc.
Any suggestions?
This thread was automatically locked due to age.