Windows 7 and DirectAccess allow mobile workers to connect seamlessly and securely to their corporate network any time they have network access. DirectAccess can be extended to participate in what Microsoft refers to as server and domain isolation (SDI) environments by participating in the end-to-end (versus just end-to-edge) IPsec authentication and encryption of network traffic.
Centrify DirectSecure allows UNIX and Linux servers to seamlessly participate in a DirectAccess server and domain isolation environment. Centrify DirectSecure builds on top of the Centrify DirectControl architecture, which provides the ability to join a non-Microsoft system to Active Directory, thereby facilitating the ability for a UNIX or Linux system to obtain a Kerberos ticket or, with DirectSecure installed, to obtain a PKI certificate. DirectControl also provides the cross-platform Group Policy engine that DirectSecure leverages to apply end-point authentication policies, configure the IPsec stack, and control which users can log in to which groups of UNIX and Linux systems.