What does Schannel primarily handle in the ProxySG environment?

Schannel primarily handles the secure channel establishment for SSL/TLS connections in the ProxySG environment. It is responsible for managing the protocols that secure communications over networks, particularly the processes involved in setting up and maintaining encrypted connections. This includes tasks such as negotiating the cryptographic protocols to be used, managing certificates, and creating secure sessions that protect data in transit from eavesdropping and tampering.

The significance of Schannel in this context lies in its role in enabling secure web communications, ensuring that data exchanged between clients and servers remains confidential and integrity-protected. By facilitating SSL/TLS connections, Schannel allows ProxySG to serve as an effective gateway for secure web traffic, which is crucial for maintaining the security and privacy of sensitive information.

Other options involve functions that are not directly related to the primary role of Schannel. For instance, file encryption, user authorization, and domain controller communication are managed by different components or features within the overall network security architecture, each serving specific purposes apart from the establishment of secure communication channels.