After configuring upstream proxy settings, you can use a single upstream proxy for all web requests.
There are three potential destinations for a web request forwarded to an upstream proxy. These are as follows, in order of precedence:
Upstream proxy policies are additive. The Guardian module checks requests against all the policies, in order. Any proxy allowed to service a request is added to the proxy pool. If the final pool for a request contains two or more proxies, load-balancing and fail-over rules decide the one that sent the request.
Note: The rules only apply to requests serviced by the Guardian module. If a client behind the Guardian module can obtain direct, unfiltered web access, the client’s requests are treated no differently from other Internet traffic.
Something not right? Send us feedback.