ConSentry Networks Customer, Alliance Imaging, to Speak at Burton Group's Catalyst Conference in San Francisco.

ConSentry Networks:

WHO:    Adam Le, director of IT infrastructure at Alliance Imaging,
        will speak about "Implementing NAC" during Burton Group's
        Catalyst 2007 San Francisco Conference.

        Having moved from an environment where security ruled the day
        - finance - to a sector where security is often lacking -
        healthcare - Le brought a strong background and stringent set
        of expectations to Alliance. As the company leapfrogs its
        peers in pioneering LAN security, it has had to balance
        pragmatic and strategic goals. Le will provide a thoughtful
        retrospective on the dos and don'ts of NAC implementations and
        a vision for where LAN security is headed.

WHAT:   Burton Group's Catalyst Conference is for Enterprise
        Technologists working to drive change within their
        organizations. The conference brings IT leaders together to
        learn about and discuss today's most significant technology
        topics and complex issues faced by enterprise organizations.

        For additional information regarding Burton Group's Catalyst
        Conference, please visit: http://catalyst.burtongroup.com/.

WHEN &  Burton Group's Catalyst Conference
WHERE:  June 25 - 29, 2007
        Hilton San Francisco
        San Francisco, CA

        Le will deliver his 35-minute presentation, "Implementing
        NAC," on Wednesday, June 27, from 4:10 - 4:45 p.m., in the
        "Architecture Inflection Point: Rethinking Security for
        Enterprises without Borders" track.

About Alliance Imaging

Alliance Imaging is a leading national provider of shared-service and fixed-site diagnostic imaging services, based upon annual revenue and number of diagnostic imaging systems deployed. Alliance provides imaging and therapeutic services primarily to hospitals and other healthcare providers on a shared and full-time service basis, in addition to operating a growing number of fixed-site imaging centers. The Company had 494 diagnostic imaging systems, including 326 MRI systems and 77 PET or PET/CT systems, and served over 1,000 clients in 43 states at March 31, 2007. Of these 494 diagnostic imaging systems, 72 were located in fixed-sites, which includes systems installed in hospitals or other buildings on or near hospital campuses, medical groups' offices, or medical buildings and retail sites.

About ConSentry Networks

ConSentry Networks delivers secure switching, enabling enterprises to control every user and secure every port on the LAN through its LANShield product family -- the LANShield[TM] Switch, LANShield Controller, and InSight[TM] Command Center. More than 100 enterprises today rely on ConSentry's award-winning secure-switching platforms to protect their corporate assets, ensure continuity of operations, and dramatically reduce the risk of security breaches. ConSentry is backed by blue-chip venture capital firms Accel Partners, DAG Ventures, INVESCO Private Capital, and Sequoia Capital; and is headquartered in Milpitas, California.

ConSentry Networks, the ConSentry Networks logo, LANShield, and "Control every user. Secure every port." are trademarks of ConSentry Networks Inc., for use in the United States and other countries. All other product and company names herein may be trademarks of their respective holders.