I have a monitoring scenario that I want to monitors some HTTP URLs that are in a LAN and send the results to the Zabbix server on the Internet. Zabbix can be used for monitoring HTTP URLs without using agents, then the main server is to monitor the HTTP URLs directly in web monitoring scenarios and the URLs should be visible for the Zabbix server. But in my scenario the HTTP services are behind the NAT then I should use 'Zabbix active agents' to monitor them. I couldn't Find any item in Zabbix agents for this purpose. Does anyone know that how should I do this task?
EDIT: I know about zabbix can be used for aggregated monitoring of local hosts, but proxy can be used for monitored items of the hosts. I couldn't find any item for monitoring HTTP urls on the hosts (active or passive hosts).