Abstract: This application relates generally to a system operating on network traffic between a network-based software as a service (SaaS) provider and a client. The system can be configured as a managed communications network proxy and take action on the network traffic based on predefined policies and rules. The system can include a suffix proxy configured for captive page processing by processing SaaS server responses so that subsequent requests are handled by the suffix proxy dependent on file type and response type.

Abstract: A method and system for modifying network addresses of at least one cloud application. The method comprises receiving a webpage sent to a client device from the at least one cloud application, wherein a webpage designates at least one script loaded to the client device during runtime; injecting a piece of code to the webpage; receiving, by the injected piece of code, an attempt to load each of the at least one script; modifying the at least one script by suffixing each network address designated in the at least one script with a predefined network address; and sending the modified at least one script to the client device, wherein runtime execution of the modified at least one script on the client device causes redirection of future requests from the client device to the cloud application to the suffixed network address.