What is the recommended method for migrating existing PAC files to Zscaler?

The recommended method for migrating existing PAC files to Zscaler is to utilize Tunnel with Local Proxy. This approach allows for a smooth transition of traffic management capabilities, maintaining the existing configuration and functionality while leveraging Zscaler’s security features.

Using Tunnel with Local Proxy provides a seamless integration of the existing PAC file's logic with Zscaler's cloud-based architecture. It enables enterprises to route their traffic appropriately without having to create new PAC files from scratch, which can be labor-intensive and prone to human error. The Tunnel efficiently redirects traffic while ensuring that the necessary policies and settings embedded in the original PAC files are preserved. This method minimizes disruption during the migration process and enhances operational continuity.

By contrast, creating new PAC files from scratch would require re-evaluating and reconfiguring existing rules and settings, which is not only time-consuming but could lead to configuration errors. Transferring files through FTP does not address the need for incorporation into Zscaler's architecture and security framework. Utilizing third-party tools could introduce unnecessary complexity or dependencies that might complicate the migration process and could entail additional costs. Thus, the Tunnel with Local Proxy method stands out as the most efficient and reliable strategy for migrating existing PAC files to Zscaler.