← Port Encyclopedia
1434
MSSQL-UDP
UDP
Database
Critical Risk
MS SQL Server Browser — instance discovery, SQL Slammer worm target
🔍 How to Scan Port 1434
nmap -sV -p 1434 target
nmap -sV -sC --script=banner -p 1434 target
nc -zv target 1434
🛡️ Security Considerations
- Scan port 1434 with
nmap -sVto identify the exact service and version - If MSSQL-UDP is not needed, close or firewall this port immediately
- Check for default credentials if a management interface runs on this port
- Use
searchsploit mssql-udpto find known exploits - Monitor traffic on port 1434 with Wireshark or tcpdump for anomalies
- Ensure the service is patched to the latest version to prevent known CVE exploitation