2 Naigos in 1 server

is that possible? how can i do that? can you give me a link on how to’s to do that?
because i want to separate our LAN and WAN monitoring… now were using 2 servers for that and botg are CentOS 5… all replies are appreciated …

thx in advance!
Dar-C

nagios.org/faqs/viewfaq.php?faq_id=22