Port 9100 · JetDirect / Raw Print

Port 9100 is JetDirect / Raw Print, TCP.

HP JetDirect and raw TCP printing — direct job submission to many network printers without a protocol wrapper.

Palo Alto

Create the service object for this port, then allow the App-ID on it. Restricting the rule to the port's service object keeps the rule working on a non-default port and stops the App-ID matching on other ports. Replace the placeholders with your own rule name and zones.

set service tcp-9100 protocol tcp port 9100

set rulebase security rules <rule-name> from <from-zone> to <to-zone> source any destination any application jetdirect service tcp-9100 action allow

Risk and exposure

Rated low risk. Even so, only expose this port to the networks and hosts that need it, and keep it patched.

Check it

• Linux ss -tlnp | grep :9100
• PowerShell Test-NetConnection <host> -Port 9100
• nmap nmap -p 9100 <host>

Related ports

• 515 LPD / LPR
• 631 IPP / CUPS
• 445 SMB
• 3702 WS-Discovery

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