Perimeter Internetworking Signs Agreement to Acquire Guarded Networks Trumbull, CT - September 20, 2004 - Perimeter Internetworking, a leading provider of managed network and security services for community financial institutions, and recipient of Connecticut Innovations Outstanding Sales Growth Award, in both 2001 & 2003, today announced the signing of a Merger Agreement with Guarded Networks, a leading MSSP and Security Consulting firm headquartered in Fort Lauderdale, Florida. The transaction is expected to close by the end of September. The merger allows the two companies, which will boast in excess of 500 community financial clients, to unite their expertise in Internet security to create a broader spectrum of services for clients. Guarded Networks best-of-breed security services, branded as BorderShield, will be leveraged across Perimeter's client base. Similarly, many of Perimeter's services including Virus Defense services, web and email filtering and reporting services will be leveraged to Guarded Networks' customer base. Perimeter will utilize Guarded Networks' Florida location as a third command center. We are always interested in joining forces with quality companies which will add value to our core service offering and adds to our expertise, commented Brad Miller, CEO of Perimeter Internetworking. Guarded Networks is a very successful security company with a terrific reputation in the industry. In addition to their best-of breed technology, I am very excited about the talent Guarded Networks brings to Perimeter, as well as their focus on the community financial market. Our primary focus has also been on the financial industry and this merger will significantly enhance our already leading position in this market. The merger with Perimeter combines tremendous expertise in the security sector and strong partner and client relationships. This combination presents an excellent opportunity for us to bring our products to a larger set of potential users as well as gives us the infrastructure to strengthen our product development and service delivery capabilities," said Richard Dobrow , President and Vice Chairman of Guarded Networks. "It will ultimately allow both organizations to more effectively compete for new business and service our clients at the highest levels of the industry.   We look forward to realizing the synergies of our technologies and establishing deeper relationships with more customers in this growing market, adds Thomas Neclerio, Vice President of Technology of Guarded Networks.   About Guarded Networks, Inc. Guarded Networks Inc. (GNI), and their BorderShield MSS offerings provide the ultimate level of security. BorderShield's service offerings include managed firewall and IDS security services, assessment services, security training services and reporting services that are designed to meet the stringent requirements of GLB, HIPAA and ISO17799. Guarded Networks offers their suite of BorderShield (www.bordershield.com) managed security service offerings through authorized channel partners, VARS and co-marketing partners who promote value added information technology services to their banking, healthcare, and telecommunications customers. Guarded Networks, Inc. is headquartered in Fort Lauderdale, Florida.   CONTACT: Mariano Dy-Liacco EVP & Chief Operating Officer Guarded Networks, Inc. 1-866-864-8273 MDyliacco@gaurdednetworks.com About Perimeter Perimeter Internetworking provides managed network defense solutions for community financial institutions. Perimeter's turnkey service offering includes managed Firewall, Intrusion Defense, Virus Protection, as well as, many user based reporting and filtering services. Perimeter's centralized architecture offers real-time security protection with best-in-class technology and staff, complete redundancy and continuous upgrades. Perimeter also provides complementary network services including Wide Area Network connectivity and management, ATM integration with management, VPN, email, calendaring, disaster recovery and voice over IP. Headquartered in Trumbull, CT, with ten branch offices throughout the United States, Perimeter's comprehensive infrastructure solutions are engineered specifically for financial institutions, validated by TruSecure, and guaranteed for current and future regulatory compliance. See Perimeter on the Web for more information at www.perimeterco.com   CONTACT:  Kathleen Roberge Vice President Business Development Perimeter Internetworking 800.234.2175 x4404 kroberge@perimeterco.com