Its taste is described as a cross of root beer and Caribbean spices. Some say the drink was named after Porter Rockwell, the Destroying Angel from the early years of the Mormon Church, whose nickname was Old Port. That might explain Ironport's strong taste and lack of caffeine.
IronPort was founded in December 2000 by Scott Banister and Scott Weiss. Cisco Systems announced on January 4, 2007 that it would buy IronPort in a deal valued at US$830 million, and completed the acquisition on June 25, 2007. IronPort was integrated into the Cisco Security business unit.