A weakness of a perimeter-based network security strategy is that it assumes every internal endpoint can be trusted. This strategy relies heavily on securing the boundary of the network but doesn't account for the possibility that threats can come from within the network, such as through compromised internal devices. If an internal device gets infected, the perimeter-based approach may fail to contain or detect the threat effectively.

A next-generation firewall uses a single-pass, parallel processor hardware architecture to accelerate content inspection. This architecture allows the device to process multiple aspects of network traffic simultaneously, enhancing performance and providing advanced security features.