How Websense filtering works
When Squid Web Proxy Cache receives an Internet request from a client, it queries Websense Filtering Service to find out if the requested site should be blocked or permitted.
If the site is blocked, the user receives a block page.
If the site is permitted, Filtering Service notifies Squid Web Proxy Cache and the client is given access to the site.
See Filtering Order in the TRITON – Web Security Help for information about how Filtering Service determines whether a site should be blocked.