CloudPassage has launched Halo NetSec, a firewall, two-factor authentication product that enables access to virtual servers in the public cloud.

As reported by TechWorld, Halo NetSec covers security needs for services from infrastructure providers, such as Amazon Web Services or Rackspace. Administrators can set up defense parameters without having access to an actual network.

The product works via a 3MB daemon located on a virtual server, where it runs in that server’s OS, eliminating the need for a hypervisor. The daemon is also capable of communicating with CloudPassage’s computing grid.

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