Proxy - Server communication

[eadghe]

Hi all,

I would like to ask if anybody could explain me details about proxy - server communication. In the documentation is written:

• Active - the proxy will connect to the Zabbix server and request configuration data
• Passive - Zabbix server connects to the proxy

So when is proxy set as Active. What configuration data are requested? Data like active checks list? I am asking because when someone will listen the communication if any sensitive data are presented ? The communication is two-way? So proxy request data and server will answer?

When is proxy set as Passive the same data are transferred (like in Active mode) but the difference is just in that zabbix server send data without request from proxy so the communication is just one-way?

Thanks you very much for answer.
Lukas

[aib]

You're right in both cases.

Active proxy is the only one way to configure Zabbix proxy behind the NAT.
In this case proxy can get from Zabbix server all data about clients which are monitoring by proxy and send back to server all collected and calculated data to save it in DB and show it on WEB-frontend.

[eadghe]

Thank you for the reply !

Just for clarity I would ask more. In a case that I monitor some servers with active agents and a proxy is there.

and now :

• Active proxy - agents ask proxy for active check list and proxy ask the zabbix server fot that list. Server send the list and proxy will store it in database? And this list will be updated every time the proxy will request the active check list ? Is it like I wrote it ?
  
• Passive proxy - agents ask proxy for active check list and what will the proxy do? I suppose somethink like that server regularly send active check list to proxy and the proxy store it in own DB?

Thank you for the clarification
Lukas