Parallels RAS Gateway Agent showing "Port mismatch" status in RAS Console.
The following services could start listening ports 80 or 443 before RAS SecureClientGateway service:
- Web Deployment Agent Service
- SQL Server Reporting services
- World Wide Web Publishing service
- IIS Admin Service
- RD Gateway Service
- KDC Proxy Server Service (KPS) is enabled.
Stop the service that is listening port 80/443 if it is not needed or change its configuration to listen a different port, so that RAS Gateway could work correctly
Change RAS Gateway port for TLS/SSL connections from 80/443 to some other available port.