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FirstClass Protocol
FirstClass Protocol is a communication platform suite primarily used in educational institutions and businesses for email, collaboration, and messaging. It runs on a proprietary protocol that facilitates client-server interactions for groupware functionalities. Port 510 is traditionally utilized during server communication within FirstClass systems to enable seamless integration of messaging, conferencing, directory services, and administrative tasks..
FirstClass Protocol is a proprietary protocol implemented by Open Text Corporation, designed to support the FirstClass server and client applications. The protocol enables a comprehensive messaging and collaboration environment, offering email, conferencing, calendaring, and document management within a single platform. Communication between FirstClass clients and servers occurs primarily over TCP port 510.
The protocol operates using a custom client-server architecture, with persistent connections established via port 510 to exchange command sequences, synchronize messages, and provide real-time updates. Although originally designed for LAN deployments, FirstClass evolved to support internet-based connectivity, employing its distinct protocol stack atop TCP/IP networking.
Despite its age, FirstClass continues to be employed in legacy deployments owing to its robust feature set and low administrative overhead. However, detailed specifications of the proprietary FirstClass protocol are not publicly available, limiting third-party integration and reverse engineering efforts.