How to Resolve SSL VPN Connection Issues on USG FLEX H firewall?

Zyxel_Emily

Question:
How to resolve SSL VPN cnnection issues on USG FLEX H firewall?

Answer:
If you are facing SSL VPN connection issues, such as constant disconnects and reconnects, follow these steps to resolve the problem:

1. Check Two-Factor Authentication (2FA):
   If 2FA is enabled under “User & Authentication > User Authentication > Two-factor Authentication > VPN Access”, ensure each SSL VPN user in the allow list is configured for 2FA (e.g., Google Authenticator).
2. VPN Configuration Adjustments:
   Verify the SSL VPN configuration in the 'RemoteAccess_SSLVPN.ovpn' file. If it references a private IP (e.g., 192.168.x.x), change it to your public IP manually.