← Port Encyclopedia
9100
JetDirect
TCP
Printing
High Risk
HP JetDirect — network printing, PRET exploitation, PJL injection
🔍 How to Scan Port 9100
nmap -sV -p 9100 target
nmap -sV -sC --script=banner -p 9100 target
nc -zv target 9100
🛡️ Security Considerations
- Scan port 9100 with
nmap -sVto identify the exact service and version - If JetDirect is not needed, close or firewall this port immediately
- Check for default credentials if a management interface runs on this port
- Use
searchsploit jetdirectto find known exploits - Monitor traffic on port 9100 with Wireshark or tcpdump for anomalies
- Ensure the service is patched to the latest version to prevent known CVE exploitation