Sunplus Chooses ZyXEL ZyWALL in Building Firewall/Virtual Private Network (VPN)

Hsinchu, Taiwan, May 6, 2003 -- ZyXEL Communications Co., (TSE: 2391) world's leading broadband access solutions vendor, today announced that Sunplus Technology Co., Ltd. (TSE: 2401, FTSE: SUPD), a leading IC design company, has chosen ZyWALL Internet security appliance to protect the company's intranet systems of its worldwide operation sites and to build a VPN.

According to its blueprint, Sunplus will implement ZyXEL's ZyWALL firewall at its operation sites in Hsinchu (Taiwan), Hong Kong, Shanghai and America, etc. With ZyWALL's robust firewall and complete data encryption functions, ZyWALL enables Sunplus to build up a complete protection network and VPN.

"After testing and evaluating many firewall/VPN products available in the market, ZyXEL ZyWALL's outstanding performance and competitive price were the most appealing factors to Sunplus when making our decision," said Mr. Jack Chang, MIS manager of Sunplus Technology. "Implementing the ZyWALL not only provides a powerful network security gateway for Sunplus's offshore operation sites, but also enables Sunplus to build a private secured network between each site with its VPN functions. This private secured network will enable every overseas site and traveling employees to access the corporate intranet through public networks in a secure way. As a result, efficiency and performance will be improved and substantial costs will be saved."

"The time when only large enterprises could afford expensive firewalls have long been gone," said Felix Chang, Product Marketing Director of CPE Business Unit. "With our past experience specializing in the router markets for small- and medium-sized businesses, ZyXEL tailored its ZyWALL to the functions actually needed by small- and medium-sized users and their budget."

About ZyWALL Firewall Family
The ZyWALL integrates a powerful firewall, VPN, content filtering, DSL/cable sharing, routing and network management functions into a single console. Regardless of the size of broadband users, individuals, homes, small- and medium-sized businesses will all find themselves the most suitable machine type from the ZyWALL product line and enjoy comprehensive network protection functions with the most economic budget possible.

About Sunplus Technology
Sunplus Technology Company Limited, which was established in 1990, is a fabless IC design company devoted to electrical consumer applications. Sunplus offers not only IC design but also system solutions to maximize customers' profits by differentiating each design. Sunplus uses Intellectual Properties (IPs) such as audio/video, micro-processor and digital signal processor technologies to develop hundreds of products including LCD IC, micro-controller IC, multi-media IC, Voice/Music IC and ASIC which can be applied to our daily life. With sales of NT$8.64 billion for 2002, Sunplus has annual growth of 30.07%. For more information, please visit Sunplus'swebsite at

About ZyXEL Communications
ZyXEL Communications Co. (TAI:2391.TW), located in Hsinchu, Taiwan, is one of the world's leading broadband access solution vendors. ZyXEL's broad line of Internet Protocol-based (IP) networking solutions includes access multiplexors, customer premise equipment, Internet security and Wireless LAN equipment, enabling high-performance network services for SOHO, small to mid-sized businesses and service providers. ZyXEL works closely with worldwide network equipment vendors, telecommunications companies, ISPs, and other major businesses. For more information, visit the company's Website at