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Port 14439APRS UI-WebServer

Port 14439 is primarily used by the UI-WebServer component of APRS UI-View, a Windows program for Amateur Radio enthusiasts leveraging APRS (Automatic Packet Reporting System). It facilitates remote web-based access to APRS data, enabling users to monitor real-time tracking information and exchange messages via a web browser. This allows a convenient interface for radio operators and remote users to access and manage APRS transmissions..

inWeb ServicesIoT
transport
tcp

single transport

in transit
cleartext

payload readable on path

assignment
unofficial

used by convention

risk
4/10

caution

lookups
15,389

rank 209 of 993 · top 21%

Technical Details

what runs on :14439

The APRS UI-WebServer operates over port 14439 mainly via TCP. It complements UI-View software, a popular Windows-based APRS client used by Amateur Radio operators. UI-View receives APRS packets either from radios or internet sources (APRS-IS) and processes this data to display positions, messages, and telemetry.

The UI-WebServer feature lets operators publish their APRS data as a lightweight website accessible remotely via browsers. It typically serves HTML pages which update with real-time vehicle tracking, weather data collected from remote stations, and messaging logs, making APRS data more accessible beyond a radio-only environment. This web interface is often customized for personal or local club use.

As a Windows-based server, it listens on port 14439 for inbound HTTP connections, handling simple requests without requiring a full-fledged web server package like IIS or Apache. The simplicity facilitates easy setup but limits advanced security or functionality options. It is generally used within trusted amateur radio communities or intranets.

Security Information

exposure of :14439

risk score

4/ 10caution

worth attention. how exposed you are depends on configuration — don't leave it reachable from the internet without a reason.

web services averages 3.9 across 112 ports — this one sits 0.1 above.

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

every listening transport is another surface to filter at the edge

security overview

Common Vulnerabilities:

  • Exposure to the public internet may allow attackers to fingerprint and exploit outdated APRS UI-View service.
  • Lack of encryption makes interception of sensitive Amateur Radio or personal identifying data possible.
  • Weak or absent authentication can lead to unauthorized access or manipulation of APRS information pages.
  • Since it relies on an outdated technology stack, it might be susceptible to known Windows service exploitation techniques.

Common Mitigations:

  • Restrict access to the APRS web server via firewall rules or VPN to trusted users only.
  • Avoid exposing port 14439 to the global internet; keep it behind NAT or within private networks.
  • Employ strong authentication controls or IP whitelisting when remote access is necessary.
  • Regularly update Windows hosts and APRS-related software components to mitigate privilege escalation and remote code execution risks.
  • Where possible, migrate to more secure, actively maintained APRS systems or web gateways supporting modern encryption.

Related Ports

all 112 in web services →

the 8 most looked-up other ports in web services — 112 ports carry that label.

portservicerisk
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:8888HTTP Alternative Portcaution
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:9080Groove RPCcaution
:8881Atlasz Secure Servercaution
:80HTTPcaution

risk mix of the 8 listed

  • safe13%
  • caution88%

0 of 8 encrypted