← Port Encyclopedia
8042
YARN
TCP
Big Data
High Risk
Hadoop YARN NodeManager — big data cluster web UI
🔍 How to Scan Port 8042
nmap -sV -p 8042 target
nmap -sV -sC --script=banner -p 8042 target
nc -zv target 8042
🛡️ Security Considerations
- Scan port 8042 with
nmap -sVto identify the exact service and version - If YARN is not needed, close or firewall this port immediately
- Check for default credentials if a management interface runs on this port
- Use
searchsploit yarnto find known exploits - Monitor traffic on port 8042 with Wireshark or tcpdump for anomalies
- Ensure the service is patched to the latest version to prevent known CVE exploitation