I have a Zabbix Agent running protected by a firewall in intranet and Zabbix Server installed in Digital Ocean (Internet). Zabbix Server can't communicate to Zabbix Agent because of the firewall, but the Agent can send data to Server, so i need to use only "Active Checks" and avoid "Passive Checks".
I have a JBOSS running in same HOST that Zabbix Agent (Under Firewall) is, and I need to check if the application is running under port 8084, usually (without firewall protection) I would create a Web Scenario with HTTP 200 check but I can't do it because Server can't reach application inside intranet.
I need some solution to check application under Zabbix Agent with "Active Mode".
Depending on the exact need, you can use net.tcp.listen, net.tcp.port, net.tcp.service or web.page.get agent item.
Note that web.page.get is quite rudimentary and does not support chunked encoding, for example - that results in unexpected data inserted in the returned page.