I have already installed nagios in xubuntu and configure it to monitor windows. I have already installed NSCliient to another PC as an agent but the problem is that the nagios cannot monitor it. I think it is the check_nt? the documentation said that I need to install it, but how can I find check_int to intall it? do anyone have an idea about my situation? help please
You dont install anything. You setup a command.
Read the documentation again, it contains clear examples.