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FlexNet License Server
Port 27000 is commonly associated with FlexNet Publisher, a software license management system used for controlling software usage across networks. It is part of a flexible port range (default usually 27000-27009) dedicated to managing license requests and coordination between client applications and license servers. This port facilitates communication that checks license availability, manages license check-in/check-out, and enforces licensing policies within organizational software deployments..
FlexNet Publisher (formerly FLEXlm) is a license management solution used extensively by software vendors to enforce and administer licensing terms. Port 27000 falls within its default dynamic license port block typically ranging from 27000 to 27009, which is used for communication between FlexNet’s license daemons and licensed client applications. When a client initiates a software instance, it sends a license checkout request over these ports to the license server.
The license server coordinates multiple FLEX-enabled applications across an enterprise. Communication over port 27000 primarily involves validating license entitlements, returning usage status, and handling feature-specific license tokens. The license manager daemon listens on port 27000 to coordinate activity, while vendor daemons assigned specific ports handle the actual license fulfillment and policy enforcement.
This setup allows for centralized control of software licensing, facilitating metrics collection, license pool optimization, and ensuring compliance. Organizations deploying FlexNet license servers configure this port range during server setup, though some configurations might customize or firewall off certain ports within the default range for tighter control.