You configure agent communications when you install an agent. You can reconfigure this setting without reinstalling the agent.
The simplified communication uses web sockets and HTTP to produce a one way, persistent connection from the agent to the Orchestrator. CA Process Automation uses a standard port (80 or 443) that provides a fast connection between the components.
The deprecated communication, which uses multiple ports, is not as firewall-friendly or NAT router-friendly as simplified communication. The Orchestrator-initiated connections used in deprecated communication is not as efficient as the persistent connections used in simplified communication.
Note: For recommendations on load balancers and the corresponding agent communication, see "Load Balancers and Communication" in the Installation Guide.
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