Untangle Web Cache helps companies to reduce the bandwidth usage and increase the sites' response time. Every time a user visits a website, its contents are stored locally on the Untangle NGFW server, and whenever the same site is requested either by the same user or by another user, the response will be provided from the cached version.

Untangle Web Cache is based on the Squid project, and it only works with the HTTP traffic. The local cache is kept on the server's hard disk and it's preserved even after system restart. Every cache query uses a fair amount of CPU resources and disk I/O, which when the server is fully utilized may lead to some latency.

To take full advantage of the Untangle Web Cache, you will need to run it on a network with at least one of the following: more than 100 users, slow/metered Internet connection, high duplicated traffic, and low dynamic website traffic (which is not cacheable).