Best Practices for Updating Secure Web Gateway

This guide outlines best practices for updating the Secure Web Gateway (SWG) appliance. It emphasizes the importance of taking a configuration backup before initiating an upgrade and recommends allocating at least one hour for maintenance when upgrading between major versions. The document details the steps for upgrading to a sticky version, including commands to check the current version and initiate the update process. It also describes the upgrade process in Central Management mode, advising on the removal of appliances from the cluster for individual updates and the rejoining process afterward. Additionally, it provides instructions for upgrading appliances configured as ProxyHA, Transparent Router, or Transparent Bridge clusters, highlighting the importance of traffic management during the upgrade. The guide notes that upgrades in networks without internet access require reimaging, and it clarifies that downgrading is not supported. Overall, it serves as a comprehensive reference for ensuring a smooth upgrade process.