← Port Encyclopedia
3478
STUN
TCP/UDP
VoIP
Medium Risk
STUN — NAT traversal for VoIP and WebRTC
🔍 How to Scan Port 3478
nmap -sV -p 3478 target
nmap -sV -sC --script=banner -p 3478 target
nc -zv target 3478
🛡️ Security Considerations
- Scan port 3478 with
nmap -sVto identify the exact service and version - If STUN is not needed, close or firewall this port immediately
- Check for default credentials if a management interface runs on this port
- Use
searchsploit stunto find known exploits - Monitor traffic on port 3478 with Wireshark or tcpdump for anomalies
- Ensure the service is patched to the latest version to prevent known CVE exploitation