Palo Alto Networks, a company offering a new type of firewall that can distinguish between hundreds of applications, allowing businesses to create more refined security policies, has unveiled its product for the first time.

Dark Reading had an early story on it, and a good explanation of how it works.

The company has also raised $28 million in venture capital in two rounds of capital, the most recent led by Globespan Capital Partners, according to another report in VentureWire (subscription required). Previous investors include Greylock Partners and Sequoia Capital.

It was started a year and a half ago by Nir Zuk, who was previously CTO at NetScreen Technologies and Fengmin Gong, who was chief scientist at McAfee.