RE: USG 20 with vpn

GFH

Do you offer any software or services to improve my USG 20?

Zyxel_Stanley

Hi @GFＨ
USG20 support SSL/L2TP VPN or Site to Site VPN.

SSL and L2TP VPN are belonging to client to site VPN.
You can use SecuExtender or Windows Native client to steup VPN tunnel.
You may refer to FAQ for L2TP VPN and SSL VPN to setup VPN tunnel.

Site to Site VPN tunnel is for the other VPN gateway or IPSecVPN Client.
You can refer to this FAQ for IPSec VPN client.