INGATE® EARNS CERTIFICATION OF SIP PROXY AND REGISTRAR SERVERS FROM THE TOLLY GROUP

STOCKHOLM, November 17, 2003 – Ingate® Systems (www.ingate.com), the leading supplier of SIP-capable enterprise firewalls and SIP appliances, earned “Tolly Verified: Product Certifications” for the Ingate SIP (Session Initiation Protocol) Proxy Server and SIP Registrar Server from The Tolly Group, a prestigious IT testing organization.

The certifications were conferred after rigorous testing of the Ingate® Firewall™ 1400 and Ingate® SIParator™ 40, a device that connects to an existing network firewall to enable seamless traversal of real-time SIP-based communications.

The Ingate® SIP Proxy Server was verified to meet the “Proxy” functionality and interoperability standard as benchmarked by the Internet Engineering Task Force (IETF), which provides specifications for all SIP products and software. The Tolly Group verification certifies Ingate’s® SIP Proxy to function as an intermediary between a SIP client and a SIP server that are unable to communicate directly.

Ingate® Firewalls™ and Ingate® SIParators™ are the only products available today that incorporate a full SIP proxy that understands SIP signaling, controls the firewall and opens the media ports only when they are needed and closes them as soon as the session is finished. This allows SIP traffic to get through, while stopping unwanted traffic at the firewall. It also enables Ingate to support encryption of SIP signaling and the content of Instant Messages, a function only possible with a proxy-based security appliance.

Ingate’s® SIP Registrar, which records the location of every SIP device on a private network, was verified to provide the “Registrar” functionality also benchmarked by the IETF. This means that Ingate® Firewalls™ and Ingate® SIParators™, all of which utilize the SIP Registrar, can receive and correctly process “SIP Register” requests. These requests direct incoming and outgoing traffic to the correct device, while still hiding the private IP address from the outside – an important security feature to prevent unwanted disclosure of the internal IP addressing scheme of an enterprise network.

“SIP traffic must be controlled through a full SIP Proxy and SIP Registrar in order to ensure smooth communication flow and NAT traversal,” said Olle Westerberg, Chief Executive Officer of Ingate® Systems. “Ingate Firewalls™ and SIParators™ enable businesses of any size to leverage SIP-based communications with confidence.”

With more than a decade of testing experience of leading-edge network technologies, The Tolly Group employs time-proven test methodologies and fair testing principles to benchmark products and services with the highest degree of accuracy.

ABOUT INGATE® SYSTEMS

A world leader in next generation firewall technology, Ingate® Systems produces and sells the world’s first SIP-capable enterprise firewalls and the SIParator™, a device that connects to an existing network firewall to seamlessly enable the traversal of SIP communications and winner of Internet Telephony magazine’s Product of the Year Award. Ingate® Systems has a long history of developing secure communications technology and today offers enterprises unprecedented value and ability to develop SIP-based, person-to-person real-time communications. Ingate’s® security products currently protect the networks of retail companies, financial institutions, industrial firms, government agencies and small-to-large enterprises throughout Europe, Asia and North America. Majority-owned by Intertex Data AB and BellNet Corp, Ingate® Systems AB is located in Stockholm and Linköping, Sweden. Its wholly-owned subsidiary, Ingate® Systems Inc., is located in Hollis, New Hampshire. For more information on Ingate® Systems, visit www.ingate.com.

ABOUT THE TOLLY GROUP

The Tolly Group, an independent testing and strategic consulting organization based in Boca Raton, FL, offers a full range of services designed to furnish both the vendor and end-user communities with authoritative and unbiased information. Additionally, The Tolly Group is recognized worldwide for its expertise in assessing leading-edge technologies. For more information on The Tolly Group’s services, visit its Web site at http://www.tolly.com, send e-mail inquiries to sales@tolly.com, or call (732) 528-3300.