Application Control and NordVPN
I would like to block access of my clients (PCs) to NordVPN servers, but leaving them free to use OpenVPN and Wireguard to connect to our customers private VPNs.
I enabled application control, blocked NordVPN and enabled Wireguard. But clients are still able to access NordVPN.
According to the firebox logs, client traffic to NordVPN server are incorrectly categorized by application control as Wireguard traffic, and not NordVPN traffic.
Using Application Control signatures 18.217 updated on Jun21/2022, fireware 12.8.
What can I do to block NordVPN access while not blocking WireGuard protocol?