SPI firewalls cannot handle UDP communications because UDP is connectionless.

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Multiple Choice

SPI firewalls cannot handle UDP communications because UDP is connectionless.

Explanation:
UDP is connectionless, but that doesn’t prevent a firewall from tracking and inspecting its traffic. Stateful Packet Inspection devices maintain per-flow state and can create temporary sessions for UDP streams, applying filters, NAT mappings, and payload checks based on the packet’s 4-tuple (source IP, destination IP, source port, destination port) and protocol. Whether this capability is available, and how effective it is, depends on the platform and its features or configurations. Some platforms fully support UDP stateful inspection, while others are limited or require enablement of specific inspection modules. That variability is why the correct stance is that it depends on the platform.

UDP is connectionless, but that doesn’t prevent a firewall from tracking and inspecting its traffic. Stateful Packet Inspection devices maintain per-flow state and can create temporary sessions for UDP streams, applying filters, NAT mappings, and payload checks based on the packet’s 4-tuple (source IP, destination IP, source port, destination port) and protocol. Whether this capability is available, and how effective it is, depends on the platform and its features or configurations. Some platforms fully support UDP stateful inspection, while others are limited or require enablement of specific inspection modules. That variability is why the correct stance is that it depends on the platform.

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