PRESS RELEASE

December 21st, 2009 — IP-based security and unified threat management (UTM) specialist, Clavister has today announced a hardware enhancement to its Security Gateway (SG) 4300 Series. The best-in-class, high performance UTM security solution will now ship with an optional redundant Power Supply Unit and Redundant Fan Module. These new options allow for a more reliable and consistent supply of power to support Clavister's customers' mission critical applications.

The Clavister SG 4300 Series is a best-in-class, high performance UTM security solution capable of handling a large number of connections with super fast throughput.

It is a set of ready-to-use, hardware-based, security products designed for medium and large enterprises and data centers that require high performance and scalability coupled with first-class UTM services. It has been designed to maximize high performance of plaintext and encrypted traffic.

John Vestberg, CTO at Clavister said: "These hardware revisions add yet further to the reliability of the Clavister SG 4300. Its combination of high performance architecture and functionality, including unparalleled UTM and built in VPN connectivity, makes the Clavister SG 4300 Series an ideal choice for customers with a need for a reliable, versatile and high performance security solution."

In addition to the recent hardware enhancements, the Clavister SG 4300 Series offers a wide range of functionality and best-in-class performance including:

* High performance UTM package —Unparalleled UTM Gigabit performance in a single 1U 19" rack-mountable unit. With support for up to 7Gbps plaintext throughput and 2.5Gbps VPN throughput, anti-virus, anti-spam, intrusion detection and prevention (IDP) and web content filtering. * Built-in high-speed VPN connectivity — The powerful built-in VPN connectivity delivers up to 10,000 simultaneous VPN tunnels and 2.5Gbps VPN throughput which supports hosted VPN services. * Easy to upgrade — The entry-level Clavister SG 4300 Series delivers Gigabit plaintext performance and 256,000 concurrent connections, but if more is needed, the Clavister SG 4300 Series is easy to upgrade from entry level to anything up to a high-speed central Data Center model.

The Clavister SG 4300 Series is fully supported by the centralized management system, Clavister InControl.

For more information on the Clavister SG 4300 Series and these latest hardware revisions, please visit www.clavister.com

ENDS

Media contacts:

Fiona Whyatt/Deborah Leah

Insight Marketing & Communications

Tel: 01625 500800

[email protected]

Editors notes:

About the Clavister Security Gateway 4300 Series

The Clavister Security Gateway 4300 Series is a set of turnkey, hardware-based, security products designed for medium and large-size enterprises and Data Centers that require high performance, excellent scalability and robustness functionality coupled with first-class Unified Threat Management (UTM) services. Based on the same award-winning technology found in all Clavister products, the Clavister SG4300 Series has been designed to maximize high performance of plaintext and encrypted traffic.

All products in the Clavister SG4300 Series are based on a purpose-built and highly optimized hardware platform, equipped with 4 x SFP connectors and 6 x 10/100/1000BASE-TX interfaces in a 1U 19" rack-mountable unit. This translates into a series of powerful, extremely secure and flexible network security gateway products.

About Clavister

Since 1997, Clavister has been delivering leading network security solutions, providing commercial advantage to tens of thousands of businesses worldwide. The Clavister family of unified threat management (UTM) appliances and remote access solutions provide innovative and flexible network security with world-class management and control.

Clavister is a pioneer of virtual network security, and this along with its portfolio of hardware and software appliances gives customers the ultimate choice. Clavister products are backed by Clavister's award-winning support, maintenance and education program.

Headquartered in Sweden, Clavister's solutions are sold through International sales offices, distributors, and resellers throughout EMEA and Asia. To learn more, visit www.clavister.com.