← Port Encyclopedia
5
RJE
TCP
System
Low Risk
Remote Job Entry — legacy protocol for submitting jobs to remote computers
🔍 How to Scan Port 5
nmap -sV -p 5 target
nmap -sV -sC --script=banner -p 5 target
nc -zv target 5
🛡️ Security Considerations
- Scan port 5 with
nmap -sVto identify the exact service and version - If RJE is not needed, close or firewall this port immediately
- Check for default credentials if a management interface runs on this port
- Use
searchsploit rjeto find known exploits - Monitor traffic on port 5 with Wireshark or tcpdump for anomalies
- Ensure the service is patched to the latest version to prevent known CVE exploitation