CUPERTINO, Calif. - Sept. 15, 2003 - Symantec Corp. (NASDAQ: SYMC), the world leader in Internet security, today announced the Symantec Gateway Security 5400 Series. Symantec's new line of firewall appliances offers customers a ready-to-deploy, complete network security solution designed to protect against various types of malicious threats, including today's blended Internet threats such as Blaster, Slammer and Sobig. The solutions reduce network security costs and provide customers comprehensive gateway level protection by integrating full inspection firewall, intrusion prevention, intrusion detection, antivirus, content filtering, virtual private networking (VPN), and anti-spam technology in a single device. The Symantec Gateway Security 5400 Series is scheduled to be available in mid-September.

The Symantec Gateway Security 5400 Series offers centralized policy configuration management through the Advanced Manager plug-in for Symantec Enterprise Security Architecture. Symantec's Advanced Manager plug-in provides secure, centralized, web-based management of hundreds or thousands of appliances. In addition, centralized logging, alerting and reporting is available with Advanced Manager or separately with an Event Manager plug-in to Symantec Enterprise Security Architecture. These appliances can also be managed individually with the included secure, Web-based Symantec Gateway Management Interface.

"As the number of blended Internet threats and discovered vulnerabilities continues to rise, customers require cost-effective advanced network security solutions to defend their networks from attack," said Gail Hamilton, executive vice president, Symantec Corp. "Symantec Gateway Security provides customers with the comprehensive, integrated protection they need while reducing total cost of ownership by eliminating the need to deploy and manage multiple security products from different vendors."

Key Product Features
Symantec Gateway Security 5400 series is a security solution that provides comprehensive protection by combining essential network security functions:

• Intrusion Prevention - Intrusion Prevention provided through the integration of multiple gated security technologies that have been shown to stop both known and many unknown types of attacks without interrupting legitimate traffic.
• Intrusion Detection - Intrusion detection based on Symantec's ManHunt engine identifies new and unknown attacks by analyzing network flows using a technique known as protocol anomaly detection.
• Full Inspection Firewall - The integrated firewall component is based on the Symantec Enterprise Firewall. This full inspection firewall provides deep packet inspection, application proxy technology and automated system hardening to protect corporate networks from Internet attacks.
• Symantec's Award-winning Antivirus Technology - The Symantec antivirus engine filters mail, FTP and HTTP traffic for viruses with Symantec's world-class antivirus technology before they enter the protected network.
• Internet Content Filtering - Includes WebNot content filtering that restricts access to Web sites deemed not applicable to the organization's use of the Internet.
• IPSec Compliant VPN - The integrated gateway-to-gateway and remote client-to-gateway VPN components enable flexible remote access while providing additional security through its integrated proxy secured VPN technology that ensures administrators can monitor traffic at the application level, not just at the network level.
• Anti-spam Protection - Includes anti-spam technology to help reduce the overhead associated with unsolicited email and similarly prevents your gateway from being used as a spam relay point against others.
• Centralized Management and Reporting - Advanced Manager and Event Manager plug-ins for the SESA console are available to provide centralized policy configuration management, logging, reporting and alerting.
• Automated Updates - Symantec's patented LiveUpdate technology automatically downloads the latest virus definitions, IDS updates, URL lists and VPN client updates, improving security while easing the administrative workload.

Performance and Scalability
With three models of the Symantec Gateway Security 5400 Series varying in performance and scalability and the addition of high availability and load balancing with state sharing, clusters of appliances can be configured to support the needs of sites ranging from small office environments to campus size networks. Performance and throughput can scale from 200 Mbps up to 1.8 Gbps. In addition, multi-gigabit speeds can be achieved with load balancing. A number of high availability options are available which include: hot standby, where a second system follows the transactions of the primary system and takes over when the primary fails; and active high availability, where a cluster of systems operate and share the load. The appliances are also flexible enough to operate within current network environments as part of an overall multi-tier, multi-platform security plan.

Symantec Security Response
Symantec Gateway Security customers benefit from Symantec Security Response - receiving the latest security updates and information available. Symantec Security Response is a team of dedicated intrusion experts, security engineers, virus hunters, threat analysts, and global technical support teams that work in tandem to provide extensive coverage for enterprise businesses and consumers. Symantec Security Response also leverages sophisticated threat and early warning systems to help provide customers with comprehensive, global, 24x7 Internet security expertise to proactively guard against today's blended Internet threats.

Licensing and Availability
In order to accommodate varying performance needs, the Symantec Gateway Security Appliance 5400 Series will be offered in three different models (5420, 5440 and 5460), starting at an estimated retail price of $3995. The flexible licensing enables customers to get the license size and complement of security functions that best meet their corporate needs. Customers will receive up to one year of telephone support, advanced replacement, upgrade insurance and content updates included with the licenses.

Symantec Gateway Security 5400 Series is scheduled to be available in mid-September through Symantec's worldwide network of value-added resellers, distributors and systems integrators. Organizations seeking a reseller or distributor should contact Symantec at http://www.symantecpartner.com/var/var_locate.html.

About Symantec
Symantec is the world leader in providing solutions to help individuals and enterprises assure the security, availability, and integrity of their information. Headquartered in Cupertino, Calif., Symantec has operations in more than 40 countries. More information is available at www.symantec.com.

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FORWARD LOOKING STATEMENT: This press release contains forward-looking statements, including forecasts of future revenue and earnings per share, expected industry patterns, and other financial and business results that involve known and unknown risks, uncertainties and other factors that may cause our actual results, levels of activity, performance or achievements to differ materially from results expressed or implied by this press release. Such risk factors include, among others: the sustainability of recent growth rates, particularly in consumer products; whether certain market segments, particularly enterprise security, grow as anticipated; the positioning of Symantec's products in those segments; the competitive environment in the software industry; ability to integrate acquired companies and technology; ability to retain key employees; ability to successfully combine product offerings and customer acceptance of combined products; general market conditions, fluctuations in currency exchange rates, changes to operating systems and product strategy by vendors of operating systems; and whether Symantec can successfully develop new products and the degree to which these gain market acceptance. Actual results may differ materially from those contained in the forward-looking statements in this press release. Additional information concerning these and other risk factors is contained in the Risk Factors sections of Symantec’s previously filed Form 10-K and Form 10-Q.