Port 3244: OneSAF — The Army's Simulation Port

What Port 3244 Is

Port 3244 is a registered port — officially assigned by IANA to OneSAF (One Semi-Automated Forces), a U.S. Army computer simulation system used for military training and wargaming exercises.¹

It was registered in February 2002 and operates on both TCP and UDP.

The Range It Belongs To

Port 3244 sits in the registered ports range (1024–49151). This range is where IANA assigns ports to specific applications upon request — software vendors, protocol designers, and government agencies can claim a number for their system.

Unlike the well-known ports (0–1023), registered ports don't require elevated privileges to use on most systems. Unlike the ephemeral ports (49152–65535), they're meant to be stable, named identifiers for specific services.

The registered range is vast. Port 3244 is one of tens of thousands of entries, many of which — like this one — are for specialized systems that operate in narrow domains.

What OneSAF Is

OneSAF is the U.S. Army's constructive simulation platform. It models individual soldiers, vehicles, and units at the entity level, simulating how forces engage, maneuver, and communicate across a battlefield.²

It supports standard distributed simulation protocols including DIS (Distributed Interactive Simulation) and HLA (High Level Architecture), which means OneSAF simulations can interoperate with other military simulation systems across a network. That's where port 3244 comes in — it's the port the software uses for network communication.

OneSAF runs at places like the Program Executive Office for Simulation, Training and Instrumentation (PEO STRI). You are unlikely to encounter it.

If You See This Port

On a military simulation network: expected.

On a corporate network, home network, or server: unexpected. It could be:

• A custom application that chose this port arbitrarily (common — developers often pick unused-looking ports)
• Malware using an obscure registered port to blend in
• A misconfigured or legacy application

Check what's actually listening before assuming anything.

How to Check What's Using It

macOS / Linux:

lsof -i :3244

Windows:

netstat -ano | findstr :3244

Then cross-reference the process ID with Task Manager (Windows) or ps aux (macOS/Linux) to identify the program.