Port 515 — LPD

TCP · Port 515/TCP is used for the Line Printer Daemon (LPD) service, which allows remote printers to be shared and managed. This service is commonly used in network printing environments and can be a potential entry point for attackers seeking to exploit vulnerabilities or gain unauthorized access.

Port Number: 515
Service Name: LPD
Protocol: TCP
Common Software: CUPS, lpd

Security Notes

Review IANA registry for port 515 usage. Apply principle of least privilege - only open ports that are required.

FAQ

What is port 515 used for?

Port 515 is used for LPD. Port 515/TCP is used for the Line Printer Daemon (LPD) service, which allows remote printers to be shared and managed. This service is commonly used in network printing environments and can be a potential entry point for attackers seeking to exploit vulnerabilities or gain unauthorized access. Common software: CUPS, lpd.

Is port 515 dangerous to leave open?

Review IANA registry for port 515 usage. Apply principle of least privilege - only open ports that are required.

How do I check if port 515 is open?

Use nmap: nmap -p 515 <target> or check locally: ss -tlnp | rg 515