← Port Encyclopedia
512
rexec
TCP
Remote Access
Critical Risk
Remote execution — executes commands on remote Unix systems, cleartext auth
🔍 How to Scan Port 512
nmap -sV -p 512 target
nmap -sV -sC --script=banner -p 512 target
nc -zv target 512
🛡️ Security Considerations
- Scan port 512 with
nmap -sVto identify the exact service and version - If rexec is not needed, close or firewall this port immediately
- Check for default credentials if a management interface runs on this port
- Use
searchsploit rexecto find known exploits - Monitor traffic on port 512 with Wireshark or tcpdump for anomalies
- Ensure the service is patched to the latest version to prevent known CVE exploitation