Authenticating to Nagios with AD accounts


Hello… I’ve set up my Ubuntu server that hosts Nagios to authenticate Active Directory accounts. Currently we only have the nagiosadmin login for Nagios. Can anyone point me in the right direction where I could have two AD groups setup where one authenticates and allows full access to Nagios and the other just lets everyone see (Read Only) the Host Detail or Service Detail screens?

I’m coming from the Windows world so please be gentle with any cgi/apache advice!!