How does Zscaler provide security for DNS traffic sent over HTTPS?

Zscaler ensures security for DNS traffic sent over HTTPS through SSL inspection to decrypt traffic. This process enables Zscaler to analyze the content of the encrypted traffic, including DNS queries and responses, to protect against threats and enforce security policies. By decrypting the traffic, Zscaler can identify potentially harmful activities, malicious domains, or unauthorized access attempts that could evade security measures if the traffic remained encrypted. This capability is crucial in the context of HTTPS because traditional security mechanisms may not adequately inspect traffic that is hidden within SSL/TLS encryption.

The effectiveness of this method lies in its ability to provide visibility and control over DNS traffic, which is essential for maintaining a strong security posture in modern infrastructures. The approach not only enhances threat detection but also aids in compliance efforts by ensuring that all traffic, including potentially risky DNS queries, is monitored and managed appropriately.