@Libik Thank you for your advice! I have fixed it. Let me close this case.

@Clive_A Yes, the preshared key is 12345678 The error is below please help me to check

@Clive_A Thank you for your reply, please confirm my configure L2TP VPN as below. VPN IP Pool: L2TP VPN User VPN Client Configure Error

@Clive_A Thank you for your reply! I have a dynamic public IP address as below. Because it's not static, I use dynamic dns with no-ip. I also configured it successfully in the router. Domain name can...

Hi everyone! I configured my TP-Link VPN Router model ER7206 like this guide of the link below. https://www.tp-link.com/jp/support/faq/2158/ My router is put behind an ISP modem which run in bridge...