Port :23513Duke Nukem 3D Source Ports

Port 23513 is commonly used by community-developed source ports of Duke Nukem 3D, such as EDuke32 or other reimplementations of the game engine. These source ports enhance the original gameplay by adding support for modern systems, additional graphics capabilities, scripting, and online multiplayer functions. The port is utilized during the establishment of network sessions between clients and servers, facilitating real-time gameplay synchronization, player status updates, and custom content transfer.

In a typical Duke Nukem 3D multiplayer session, this port handles game data packets, including movement, shooting, and environment updates. It can support both peer-to-peer and dedicated server models, depending on the source port’s implementation. Since there is no official assignment, the port number may be configurable or selected by convention among the game’s community.

Due to its unofficial status, this port’s network protocol is not standardized, varying across different implementations. Communication mechanisms can include TCP, UDP, or sometimes both. However, in the legacy data, neither TCP nor UDP is marked as active, which suggests this port is often configurable and subject to change depending on user setup, or its use is sporadic.