The communication between components within AEM architecture is uses HTTPS by default. The intention is obviously to encourage users to use HTTPS for security reason.
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From Site Visitor to Publish-Dispatcher ELB
Site visitor can connect to Publish-Dispatcher ELB via HTTPS on port 443. Alternatively.
However, most users often have a layer (e.g. CDN/routing) sitting in front of the AEM architecture, which connects to AEM Publish-Dispatcher ELB only via HTTPS.
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From Publish-Dispatcher ELB to Publish-Dispatcher EC2 instance
Publish-Dispatcher ELB connects to Publish-Dispatcher EC2 instance via HTTPS on port 443.
Publish-Dispatcher ELB health monitoring checks Publish-Dispatcher EC2 instance only via HTTPS on port 443, at path /system/health?tags=shallow .
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From Publish-Dispatcher EC2 instance to Publish EC2 instance
AEM Publish-Dispatcher is configured to point to AEM Publish as its farm's website render via HTTPS on port 5433 with secure setting enabled.
From Publish EC2 instance to Publish-Dispatcher EC2 instance
AEM Publish is configured with a flush agent that points to AEM Publish-Dispatcher via HTTPS on port 443.
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From Author-Primary EC2 instance to Publish EC2 instance
AEM Author is configured with replication agent that points AEM Publish via HTTPS on port 5433.
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From Author-Primary EC2 instance to Author-Standby EC2 instance
Author-Standby is configured with primary.host pointing to Author-Primary. Data synchronisation is run through port 8023, with secure option set to true.
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From Author ELB to Author-Primary EC2 instance
Author ELB connects to Author-Primary EC2 instance via HTTPS on port 5432.
Author ELB health monitoring checks Author-Primary EC2 instance only via HTTPS on port 5432, at path /system/health?tags=shallow .
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From Author-Dispatcher EC2 instance to Author ELB
AEM Author-Dispatcher is configured to point to AEM Author ELB as its farm's website render via HTTPS on port 443 with secure setting enabled.
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From Author-Dispatcher ELB to Author-Dispatcher EC2 instance
Author-Dispatcher ELB connects to Author-Dispatcher EC2 instance via HTTPS on port 443.
Author-Dispatcher ELB health monitoring checks Author-Dispatcher EC2 instance only via HTTPS on port 443, at path /system/health?tags=shallow .
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From Content Author to Author-Dispatcher ELB
Site visitor can connect to Author-Dispatcher ELB via HTTPS on port 443. Alternatively.
However, most users often have a layer (e.g. routing via a reverse proxy) sitting in front of the AEM architecture, which connects to AEM Author-Dispatcher ELB only via HTTPS.
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