The Apica Monitoring Agent is a service that collects performance metrics at regular intervals. The collected data is sent to a controller server which stores the data in a database administered by Apica. Examples of metrics collected by the agent include CPU usage, memory usage, network, and disk utilization.
The PMA agent communicates with its controller via TCP or HTTP.
If the agent is configured to use plain TCP it must be able to connect to ltagcontroller.apicasystem.com on TCP port 26300.
If the agent is configured to use HTTP is must be able to connect to ltagcontroller.apicasystem.com on TCP port 26301.
Windows Performance Monitoring Agent (PMA)
https://apica-kb.atlassian.net/wiki/spaces/ALTDOCS/pages/5673138/V+Troubleshooting