Definition: Definition: The word 'dwstblnk2' refers to a network protocol used in IPv4, which enables tunneling between two different networks within the same firewall. Detailed Definition: This term stands for "Dynamic Traffic Switching Block" or "Dynamic Traffic Tunneling Block". It's an advanced feature of IPv4, allowing it to implement a dynamic traffic switching system. In other words, when a packet is being sent between two distinct networks, it uses this block to facilitate the tunneling process by dynamically choosing the appropriate route based on the destination's IP address. This ensures that packets are transferred securely and efficiently without any need for manual configuration or management of network interfaces.