L4

networking

Stands for: Layer 4 (the transport layer)

The transport layer, handling ports and connections like TCP/UDP.

Layer 4 of the OSI model is the transport layer, where TCP and UDP live. L4 load balancing forwards based on IP and port without inspecting application content, which is faster but blind to Layer 7 details like hostnames or URLs.

Also known as: l4, layer 4

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