Port 1190: CommLinx GPS/AVL System — Where vehicles report home

Port 1190 is officially assigned to CommLinx GPS/AVL System—a service that handles communication between GPS-tracked vehicles and the servers that monitor them.¹

What AVL Systems Do

AVL stands for Automatic Vehicle Location. It's the technology that lets organizations track their vehicles in real time.²

The pattern is simple: A GPS device in a vehicle determines its coordinates from satellites. Then it transmits that location data—along with speed, direction, and status—back to a central dispatch center. Port 1190 is one of the ports used to carry those position reports home.³

This happens continuously. Every few seconds or minutes, depending on configuration, the vehicle announces: "I'm here." The dispatch center updates its map. Fleet managers see their vehicles moving across the screen in real time.

Who Uses This

AVL systems run across multiple industries:⁴

• Transit agencies track buses and trains, feeding real-time arrival data to passengers
• Delivery companies monitor truck locations and optimize routes
• Taxi and ride-sharing services know where every driver is
• Law enforcement tracks patrol vehicles and emergency responders
• Fleet operators of all kinds keep tabs on their vehicles

The core question is always the same: "Where are my vehicles right now?"

How It Works

The GPS receiver in the vehicle talks to satellites—that's how it knows where it is. But getting that location back to headquarters requires a network connection. Modern AVL systems typically use cellular networks (GSM/GPRS) or satellite links to transmit position data.⁵

Port 1190, in the CommLinx implementation, handles the communication channel between the vehicle's tracking device and the monitoring server. The device sends coordinates. The server receives them, logs them, displays them on a map.

It's a conversation that never stops as long as the vehicle is running.

The Registered Ports Range

Port 1190 falls in the registered ports range (1024-49151). These ports are assigned by IANA to specific services, but they're not as universally recognized as the well-known ports below 1024.⁶

Companies and organizations can register a port for their protocol or service. CommLinx registered 1190 for their GPS/AVL system. Other companies might use different ports for similar services—there's no single standard port for all vehicle tracking systems.

Security Considerations

Vehicle location data is sensitive. If someone can intercept the traffic on port 1190, they know where your vehicles are—and potentially where they're going.

Modern implementations should use encryption (TLS/SSL) to protect the data stream. Firewalls should restrict which IP addresses can connect to port 1190 on your AVL servers. You don't want the whole Internet able to query your fleet's positions.

If you're running an AVL system, ensure:

• Only authorized tracking devices can connect
• Communications are encrypted
• Access to the monitoring server is restricted
• Location data is stored securely

Checking What's on Port 1190

To see if something is listening on port 1190 on your system:

Linux/Mac:

sudo lsof -i :1190
netstat -an | grep 1190

Windows:

netstat -ano | findstr :1190

If you see a service listening on this port and you're not running a CommLinx AVL system, investigate. It could be legitimate software using the port unofficially, or it could be something you didn't expect.

Why This Port Matters

Port 1190 represents something larger than one company's GPS system. It's part of the infrastructure that makes modern logistics possible.

The ability to track vehicles in real time changes how cities run their buses, how companies manage deliveries, how emergency services respond to calls. GPS satellites answer the question "where are you?" But it's ports like 1190 that carry the answer back to the people who need to know.

Every position update from every tracked vehicle is a small message saying "I'm here, and I'm okay." Dispatch centers rely on that stream of reassurance to keep operations running smoothly.

Related Ports

Other ports commonly used in GPS and vehicle tracking:

• Port 2947: GPSD (GPS daemon) default port
• Port 5000: Used by various fleet management systems
• Port 8001: Common for GPS tracking server software

Different vendors use different ports. There's no universal standard—just registered assignments like this one.