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Port 3478 Details

known port assignments and vulnerabilities
threat/application/port search:
Port(s) Protocol Service Details Source
3478 tcp,udp stun VoIP STUN (Session Traversal Utilities for NAT) port. It operates on port 3478 TCP/UDP, may also use port 19302 UDP. It is usually supported by newer VoIP devices. [RFC5389] [RFC5766] [RFC5780]

Microsoft Teams uses UDP ports 3478 through 3481

WhatsApp uses these ports:
80, 443, 4244, 5222, 5223, 5228, 5242 TCP
50318, 59234 TCP/UDP
3478, 45395 UDP

Ubiquiti UniFi Controller uses these ports:
8080 TCP - http port for UAP to inform controller
8443 TCP - https port for controller GUI/API
8880 TCP - http portal redirect port (may also use ports 8881, 8882)
8843 TCP - https portal redirect port
3478 UDP - STUN port (should be open at firewall)

Ubiquiti UniFi Cloud Access uses these ports:
443 TCP/UDP - Cloud Access service
3478/UDP - port used for STUN
8883/TCP - Cloud Access service

Apple FaceTime, Apple Game Center use ports 3478-3497 (UDP).

Playstation 4 game ports:
TCP 1935, 3478-3480
UDP 3074, 3478, 3479

Test Drive Unlimited 2, Motorola Ojo, Call of Duty World at War also use this port (UDP).
Elite Dangerous: Horizons pings port 3478 every 5 minutes.

IANA registered for: TURN over TCP
3478,3479,3074,3075 udp applications Call of Duty - World at War Portforward
3478-3479,3658 udp applications PlayStation Network Portforward
3478,3479,3658 udp applications PS3 NAT Type 3 to 2 Portforward
3478 tcp,udp nat-stun-port Simple Traversal of UDP Through NAT (STUN) port Bekkoame
3478 tcp,udp stun Session Traversal Utilities for NAT (STUN) port [RFC5389] IANA
3478 tcp turn TURN over TCP [RFC5766] IANA
3478 udp turn TURN over UDP [RFC5766] IANA
3478 tcp stun-behavior STUN Behavior Discovery over TCP [RFC5780] IANA
3478 udp stun-behavior STUN Behavior Discovery over UDP [RFC5780] IANA
10 records found
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Related ports: 443  3074  3075  3479  3480  3481  5223  8080  8443  8880  8843  8883  19302  

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External Resources
SANS Internet Storm Center: port 3478

Port numbers in computer networking represent communication endpoints. Ports are unsigned 16-bit integers (0-65535) that identify a specific process, or network service. IANA is responsible for internet protocol resources, including the registration of commonly used port numbers for well-known internet services.
Well Known Ports: 0 through 1023.
Registered Ports: 1024 through 49151.
Dynamic/Private : 49152 through 65535.

TCP ports use the Transmission Control Protocol, the most commonly used protocol on the Internet and any TCP/IP network. TCP enables two hosts to establish a connection and exchange streams of data. TCP guarantees delivery of data and that packets will be delivered in the same order in which they were sent. Guaranteed communication/delivery is the key difference between TCP and UDP.

UDP ports use the Datagram Protocol. Like TCP, UDP is used in combination with IP (the Internet Protocol) and facilitates the transmission of datagrams from one computer to applications on another computer, but unlike TCP, UDP is connectionless and does not guarantee reliable communication; it's up to the application that received the message to process any errors and verify correct delivery. UDP is often used with time-sensitive applications, such as audio/video streaming and realtime gaming, where dropping some packets is preferable to waiting for delayed data.

When troubleshooting unknown open ports, it is useful to find exactly what services/processes are listening to them. This can be accomplished in both Windows command prompt and Linux variants using the "netstat -aon" command. We also recommend runnig multiple anti-virus/anti-malware scans to rule out the possibility of active malicious software. For more detailed and personalized help please use our forums.

Please use the "Add Comment" button below to provide additional information or comments about port 3478.
  User Reviews/Comments:
by Batfink - 2017-06-04 12:14
Port 3478 is also pinnged by Elite Dangerious: Horizons at first connection and every five minutes thereafter.
by technical_john - 2020-04-28 11:39
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