The dispatcher is used as a load balancing/caching tool by AEM. It can also be used to block anyone from accessing your AEM author instance. This is to ensure that no one outside the client’s network can access it. AEM Author and publisher should never be exposed directly. In most cases, clients may also require a block to be put on AEM pub dispatchers before going live. This is to ensure that no one can see the site except for the client so performance, penetration, and UAT testing can be performed before going live.
In this blog, I’m going to walk you through 5 easy steps to enable IP whitelisting in Apache so only the allowed list of IPs have access to AEM through the dispatcher.
1) In Apache to enable whitelisting, the Require directive is used which is provided by the mod_authz_host module. Make sure that you have the module enabled first in /dispatcher/src/conf.modules.do/00-base.conf
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