Firewall installs its own local VPN profile to perform on-device security checks.

iOS currently does not support multiple active VPNs, so most VPNs fail to work if Firewall is enabled and vice versa. Also, if you connect to a VPN, Firewall will be turned off by the iOS automatically.

The good news is that there's a setup that lets you run Firewall alongside certain VPN profiles.

If your VPN occupies a slot in the Personal VPN section in iOS Settings > VPN and uses the IKEv2/IPsec protocols, it is compatible with Firewall's VPN profile, and they can both work simultaneously.

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