What is port 30120 used for?

Port 30120 is the standard TCP/UDP port used for FiveM (GTA V Multiplayer). It is commonly used by FXServer, txAdmin, CitizenFX. Primary connection and heartbeat port for FiveM multiplayer dedicated servers for Grand Theft Auto V.

How do I check if port 30120 is open?

Enter your public IP or hostname into the scanner tool and click Check. A sub-second raw TCP socket handshake will be initiated from our edge server to port 30120 on your target. If the 3-way handshake finishes with SYN-ACK, the port is OPEN. If an RST packet is returned, the host is reachable but the port is CLOSED. If packets time out without response, the port is FILTERED by an ISP or firewall.

Is port 30120 safe to expose to the public internet?

Port 30120 is generally safe to expose when running standard, patched services with strong authentication. However, always ensure your software is updated and access control policies are strictly enforced.

Why does port 30120 show as closed or filtered?

If port 30120 reports CLOSED or FILTERED, confirm that: 1) Your service is actively running and bound to 0.0.0.0 (not just localhost/127.0.0.1); 2) Your router has a port forwarding rule directing external port 30120 to your machine's local IP; 3) Your operating system firewall (Windows Defender Firewall, ufw, or iptables) allows incoming connections on port 30120.

PORT 30120 TCP/UDP Gaming Low Risk

Port 30120 (FiveM (GTA V Multiplayer)) Open Check

Primary connection and heartbeat port for FiveM multiplayer dedicated servers for Grand Theft Auto V.

Live Socket Reachability Probe

Pre-configured for Port 30120

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Port Specifications & Network Behavior

Standard Port Number 30120

Primary Service FiveM (GTA V Multiplayer)

Transport Protocol TCP/UDP

Traffic Classification Gaming

Residential ISP Status Typically unrestricted by consumer ISPs

Security Exposure Low Suitable for public internet hosting with authentication

Security Advisory: FiveM (GTA V Multiplayer) (Port 30120)

Both TCP (HTTP file syncing) and UDP (gameplay netcode) are strictly required for FiveM players to connect.

Port Forwarding & Troubleshooting Checklist

If port 30120 returns CLOSED or FILTERED, work through this verified diagnostic checklist:

1 Ensure server.cfg contains 'endpoint_add_tcp "0.0.0.0:30120"' and 'endpoint_add_udp "0.0.0.0:30120"'.
2 Forward both TCP and UDP port 30120 in router settings.
3 Verify txAdmin web interface is configured on alternate port (default 40120).

Verify Host Is Listening Locally

Windows (PowerShell) netstat -ano | findstr :30120

Linux / macOS (Bash) ss -tulpn | grep :30120