Fully Automated Nagios ISO Download

Fully Automated Nagios  ISO Download links are as below for both 32-bit and 64-bit version.

Latest stable version

Actually, FAN Nagios is available for i386 and x86_64 architecture.

VERSION	DATE	MIRROR1	MIRROR2	MIRROR3	MIRROR4
2.4-i386	2013-03-14	FAN-2.4-i386.iso	FAN-2.4-i386.iso	FAN-2.4-i386.iso	FAN-2.4-i386.iso
2.4-x86_64	2013-03-14	FAN-2.4-x86_64.iso	FAN-2.4-x86_64.iso	FAN-2.4-x86_64.iso	FAN-2.4-x86_64.iso

Source: www.fullyautomatednagios.org