DNS leak protection refers to measures taken to ensure the privacy and security of internet users by preventing DNS queries and responses from leaking or being transmitted unencrypted over untrusted networks. DNS leaks can occur when DNS queries or responses are inadvertently routed through an untrusted DNS server or insecure channel, potentially compromising the user's privacy by revealing information about the websites they visit.
Typical functions of software in the "DNS leak protection" domain include:
DNS Encryption: The software encrypts DNS queries and responses to ensure they cannot be intercepted or manipulated by third parties.
Built-in DNS Resolver: The software includes its own DNS resolver that ensures DNS queries are routed through trusted DNS servers to prevent leaks.
DNS Leak Detection: The software detects and alerts the user to potential DNS leaks that may occur when DNS queries are routed through insecure channels.
Automatic Configuration: The software automatically configures the system's DNS settings to ensure DNS queries are routed through secure and trusted DNS servers.
DNS Cache Clearing: The software regularly clears the DNS cache to ensure no outdated or unwanted DNS entries are stored that could lead to leaks.
VPN Integration: The software provides integrated VPN features to encrypt all of the user's internet traffic and prevent DNS leaks when connected to insecure networks.