According to Check Point Best Practice, when adding a 3rd party gateway to a Check Point security solution what object SHOULD be added? A(n):

An Interoperable Device is the Check Point object type specifically designed for third-party VPN gateways and security devices. It allows Check Point to establish VPN tunnels and define topology with non-Check Point devices without treating them as Check Point-managed gateways. This is the documented best practice for integrating third-party firewalls, routers, or UTM devices into a Check Point VPN community.

A Network Node object represents a simple host or endpoint on the network, not a gateway or routing device, and cannot be placed in a VPN community.

Externally Managed Gateway is used for Check Point gateways managed by a separate Check Point management server, not for third-party vendor devices.

A Gateway object is reserved for Check Point-native gateways under the same management domain and cannot properly represent third-party device capabilities or VPN settings.