Network Layer

Noun · Development

Definitions

  1. Layer 3 of the OSI model, responsible for logical addressing (IP addresses) and routing packets across interconnected networks — implemented primarily by the Internet Protocol (IPv4/IPv6) and routing protocols like BGP and OSPF.

    In plain English: The part of networking that handles addressing and routing data between different networks, like how a letter gets from one city to another.

    Example: "The firewall rule operates at the network layer, blocking all packets from that CIDR range regardless of port or protocol."

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