What is difference between Item types "ZABBIX agent" and "ZABBIX agent (active)"

[RandySpinaGE]

Can anyone articulate?

I use mostly UserParameters and they are all type "ZABBIX agent".
The Unix_t template uses all type "ZABBIX agent".

What is "ZABBIX agent (active)" used for?





running 1.1

[den_crane]

some items require(ZABBIX agent) in that case server initiate check (getting data)
other items (key = log,...) require (ZABBIX agent (active)) in that case agent initiate check (sending data)

[MrRobbert]

So with other words it means:

If you use it for monitoring hosts over the internet: work network contains server, privat network contains hosts with agent)

If you use zabbix agent, you have to open a port on your private router because youre server pulls the information from the host.

But if you use zabbix agent(active) the host on your private network pushes the information it gathers to youre server, so you don't have to open a port on youre private networks router or gateway, but only in youre gateway at work (port forwarding to youre zabbix server)

Is this true? Or am i thinking wrong?

Grz Robbert