Nagios Support Forum

That really depends on what you want to do - "network monitoring" is a very broad term. I would suggest looking into the Configuration Overview for starters as this will help walk you through how to configure any generic object in Core. From there you can look into the Nagios Plugins Docum...

Plugins really shouldn't know or care whether they are being run as active or passive, so it should work just fine.

Did you have further (related) questions or are we good to lock this up?

Did you have further (related) questions or are we good to lock this up?

Yes.

Not only that, you should power the machine down as soon as you can. The last command in the compromised file you shared is connecting back to a remote machine giving someone access.

Did you have further (related) questions or are we good to lock this up?

Did you have further (related) questions or are we good to lock this up?

Here is an excellent presentation given by one of our techs on high availability options: https://www.youtube.com/watch?v=KW5Qkl8brcA

Thanks for the assist, @mcapra! OP, please let us know if you need further assistance.