What is the recommended system proxy settings when using tunnel mode in Zscaler?

When using tunnel mode in Zscaler, enforcing a no-proxy configuration is the recommended approach because it ensures that all user traffic is directed through the Zscaler infrastructure without being influenced by other proxy settings. This configuration supports the primary function of tunnel mode, which is to securely forward traffic directly to Zscaler for both inspection and policy enforcement.

Using a no-proxy configuration simplifies the user experience, reduces the likelihood of misconfiguration, and ensures that all traffic is consistently managed by Zscaler's cloud platform. Directing all traffic through Zscaler enhances security and compliance, allowing organizations to effectively safeguard sensitive data while maintaining optimal performance and connectivity.

In contrast, mixed proxy configurations or dynamic settings could potentially introduce complexities where user traffic might bypass Zscaler's security measures or create routing issues. Manual proxy configuration for each user can lead to administrative overhead and inconsistent settings across the organization, making it less effective than a unified approach with no proxies. Hence, a focus on a no-proxy configuration is the best practice in this context.