Port 3979OpenTTD
OpenTTD is a popular open-source simulation game that emulates and expands upon the classic Transport Tycoon Deluxe. It uses this port primarily to facilitate multiplayer connections, enabling players to collaboratively or competitively build transportation networks over the internet or local networks..
- transport
- tcp · udp
- in transit
- cleartext
- assignment
- unofficial
- risk
- 4/10
- lookups
- 4,434
2 transports registered
payload readable on path
used by convention
caution
rank 965 of 993 · top 97%
Technical Details
what runs on :3979OpenTTD extends Transport Tycoon Deluxe with features such as larger maps, dedicated servers, and multiplayer support. The game relies on port 3979 for both game server hosting and client connections. This port facilitates real-time data exchange, including player actions, updates to the game world, and messaging.
Communication over port 3979 includes server discovery, version negotiation, authentication, and game state synchronization. Both TCP and UDP are utilized: TCP handles reliable data transactions such as game commands, while UDP is used for latency-sensitive information like positional updates, optimizing gameplay smoothness.
Deployment can be on dedicated or player-hosted servers, with NAT traversal relying on port forwarding to ensure external client connections. The port is unofficial and configurable, so server hosts may adjust it to avoid conflicts or for security purposes.
Security Information
exposure of :3979risk score
4/ 10caution
worth attention. how exposed you are depends on configuration — don't leave it reachable from the internet without a reason.
gaming averages 4.0 across 124 ports — this one sits level with it.
in transit
cleartext
credentials and payloads are readable by anyone on path
assignment
unofficial
used by convention, not registered — what answers here varies by deployment
reachable over
tcp · udp
udp is connectionless — source addresses are trivially spoofed and it is a reflection favourite
security overview
Common vulnerabilities for services on this port include:
- Denial of Service (DoS): Attackers could flood the server, causing game disruptions.
- Exploitation of server bugs: Buffer overflows or unhandled exceptions in the OpenTTD server code could result in crashes or remote code execution.
- Unauthorized access: If authentication mechanisms are weak, unauthorized users may join or disrupt games.
Mitigation strategies include:
- Keeping OpenTTD servers updated to patch security vulnerabilities
- Enabling password protection to restrict access
- Implementing firewall rules to restrict connection sources
- Monitoring gameplay logs for anomalous activity
- Limiting the server’s exposure through NAT or VPN
- Running the server with limited privileges to reduce impact in case of compromise
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risk mix of the 8 listed
- caution100%
0 of 8 encrypted