WCCP

Web Cache Communication Protocol

Allow routing platforms to transparently redirect packages to other destinations

Component	Function	What it controls	Example Devices/Apps
group-address	Communication	Specifies the Multicast IP used for routers and cache engines to find each other.	Riverbed SteelHead, Multicast-enabled clusters
group-list	Security/Filtering	Defines which Cache Engines (clients) are allowed to join the service group.	Cisco WSA, BlueCoat Proxy
redirect-list	Traffic Selection	An ACL that identifies specific user traffic (e.g., HTTP/HTTPS) to be redirected.	HTTP (Port 80), HTTPS (Port 443), Skyhigh Security SWG
service-list	Advanced Control	(Rarely used/Platform specific) Groups multiple service parameters or defines custom protocol behaviors.