1524
Ingreslock
Critical RiskTCP — Security & VPN
Port Overview
Port Number
1524
Service Name
Ingreslock
Transport Protocol
TCP
Category
Security & VPN
Security Risk
Critical
Port Range
Registered (1024-49151)
What is Port 1524?
Port 1524 is associated with the Ingreslock backdoor, historically left open by some attackers after compromising systems. It was originally assigned to the Ingres database lock manager. This port is often flagged in security scans as a potential indicator of compromise.
TCP
Security & VPN
Security Considerations
Port 1524 (Ingreslock) is classified as critical risk. This port should not be exposed to the public internet. The service transmits data without encryption, making it vulnerable to eavesdropping, credential theft, and man-in-the-middle attacks.
Recommendation: Block this port at the firewall. Use encrypted alternatives (SSH, SFTP, HTTPS) instead.