Port 7401RTPS DDS Traffic

RTPS (Real Time Publish Subscribe) DDS User-Traffic is primarily used for real-time data distribution in distributed systems using the Data Distribution Service (DDS) protocol. This port facilitates efficient, scalable publish-subscribe communication patterns, supporting both TCP and UDP, commonly found in mission-critical, time-sensitive environments such as robotics, autonomous vehicles, industrial automation, and IoT deployments..

transport
tcp · udp

2 transports registered

in transit
cleartext

payload readable on path

assignment
official

registered with iana

risk
2/10

safe

lookups
14,696

rank 228 of 993 · top 23%

Technical Details

what runs on :7401
  • Overview: RTPS (Real-Time Publish-Subscribe) is the wire protocol used by the Object Management Group's (OMG) Data Distribution Service (DDS), a middleware protocol designed for scalable, dependable, high-performance data-centric publish-subscribe communication. Operating over port 7401, RTPS enables distributed components to exchange data in real-time with low-latency and high throughput.

  • Transport Protocols: RTPS supports both TCP and UDP transport. UDP is often preferred due to its lower latency and overhead, though TCP can be used when reliability is prioritized. The protocol supports multicast communication for efficient data dissemination to multiple subscribers, along with configurable Quality of Service (QoS) policies controlling reliability, durability, latency, and security requirements.

  • Use Cases: It is widely deployed in sectors requiring deterministic data exchange, including aerospace, defense, autonomous vehicles, industrial automation, medical devices, robotics, and large-scale simulation systems. DDS with RTPS provides features such as automatic discovery of publishers and subscribers, flexible data filtering, and support for both reliable and best-effort communication styles.

Security Information

exposure of :7401

risk score

2/ 10safe

routine exposure. this port is rarely the way in on its own — keep it patched and logged and move on.

network services averages 3.9 across 604 ports — this one sits 1.9 below.

in transit

cleartext

credentials and payloads are readable by anyone on path

assignment

official

registered with iana for this service — scanners fingerprint it by number

reachable over

tcp · udp

udp is connectionless — source addresses are trivially spoofed and it is a reflection favourite

security overview

  • Common Vulnerabilities:

    • Lack of encryption: Without transport encryption, communication may be intercepted or altered.
    • Unauthorized discovery: Open DDS nodes can be discovered and potentially exploited by unauthorized parties.
    • Denial of Service: Attackers could flood the network with dummy data samples or discovery packets, causing resource exhaustion.
    • Misconfiguration: Weak or default QoS policies may permit unintended access or reduce resilience against faults.
  • Common Mitigations:

    • Encryption: Use DDS Security plugins enabling TLS or DTLS to encrypt data and control channels.
    • Authentication and Authorization: Implement robust identity management and permissions to restrict participant access.
    • Network Segmentation: Isolate DDS communication on dedicated networks or VLANs, blocking unnecessary external access.
    • Firewall Rules: Allow only trusted hosts for port 7401 and limit exposure over the internet.
    • QoS Hardening: Define strict QoS policies suited to security and performance profiles.
    • Monitoring: Continuously monitor network traffic and audit DDS logs for anomalous activities.

the 8 most looked-up other ports in network services — 604 ports carry that label.

risk mix of the 8 listed

  • caution100%

0 of 8 encrypted