Zscaler Client Connector, formerly Zscaler App (Z App), enforces security and policy control for millions of devices worldwide The challenge of enforcing secure mobile access The number of BYOD and managed devices being used for work continues to grow each year. What is the Zscaler App?Zscaler identifies the main location and all sublocations by the IP address of the proxy server that's chaining to it. This stuff is all in the Administration page under "Internet Gateways and SSL", and one of the useful options there is the ability to turn authentication off entirely for any given location or sublocation.