SonicWall once focused on small and midsize businesses, but its introduction earlier this year of a next-generation firewall line dubbed SuperMassive leaves no doubt that the company is now taking aim at larger enterprises. In fact, the privately-held San Jose company's CEO, Matt Medeiros, says the enterprise market accounted for nearly half of SonicWall's sales over the past six months.

Interview with Sean McAdam, CEO of F5 Networks, which has managed to garner nearly half of the Layer 4-7 switching market.