FOR IMMEDIATE RELEASE CITRIX AND FTP SOFTWARE JOIN FORCES TO DISTRIBUTE STANDARD WINDOWS PROGRAMS OVER THE INTERNET WinView Application Servers Form Backbone for New Era of Interactive Windows-Based Internet Services NETWORLD + INTEROP, ATLANTA, GA -- SEPTEMBER 12, 1994 -- CitrixTM Systems, Inc. and FTP Software, Inc. (NASDAQ: FTPS) today announced a broad initiative to deliver a new generation of Windows capabilities for Internet service publishers and users. Citrix has incorporated technology from FTP Software into its WinViewTM for Networks application server software, forming the infrastructure for interactive Windows programs across the Internet. This is the first solution available that enables Internet publishers to deliver interactive Windows information services, using off-the-shelf Windows applications and development tools. Citrix and FTP Software will cooperate in future projects to deliver additional interactive Windows capabilities that integrate existing Internet tools and architectures. Citrix also announced today WinView for Networks version 2.3 and TCP/IP for WinView version 1.0. WinView for Networks version 2.3 is a major upgrade, providing base functionality for Internet access. TCP/IP for WinView version 1.0 is add-on software that supplies full TCP/IP support for WinView servers. Citrix licensed portions of FTP Software's TCP/IP stack technology for inclusion in the new TCP/IP for WinView product. Please see separate press release for more details on WinView for Networks version 2.3 and TCP/IP for WinView. "Citrix application server technology opens the Internet to an exciting new level of service opportunities, giving it even broader appeal for more people," said David Fowler, vice president of marketing and sales for FTP Software, Inc. "Today's announcement will bring the Information Superhighway a step closer through the accelerated delivery of new Windows information services. Until now, interactive Windows information services could not be published over the Internet. Citrix makes it possible to rapidly develop and deploy interactive Windows services to Internet users, so anyone familiar with Windows can now publish Internet services." -- more -- Citrix and FTP Join Forces -- Page 2 of 4 "As a respected leader in the TCP/IP world, FTP Software is a perfect partner for Citrix," said Edward Iacobucci, founder and chairman of Citrix Systems, Inc. "With these exciting new capabilities, publishing an information service on the Internet is as simple as writing a Windows application. Any organization, large or small, can use WinView for Networks to easily disperse information to a growing base of worldwide users." Central to today's announcement is the adaptation of the Citrix distributed Windows protocol, called Intelligent Console Architecture (ICATM), to the TCP/IP environment. Citrix developed its ICA protocol to provide fast remote Windows services for its line of application server software. ICA runs Windows applications locally on WinView application servers, sending only user interface objects and events to client PCs. This architecture allows off-the-shelf Windows applications (including Windows standard and enhanced mode programs) to perform at very high speed over low bandwidth connections. In use by thousands of Citrix servers worldwide, ICA is a mature and efficient protocol. TCP/IP is the industry-standard communications protocol for heterogeneous distributed computing networks. FTP Software's flagship product, PC/TCP network software, is one of the industry's leading software for running TCP/IP on Windows, DOS and OS/2 PCs. Citrix created an interface between the TCP/IP and ICA protocols, allowing ICA to run over TCP/IP. The two companies will investigate ways to further integrate the distributed Windows protocol with existing Internet directory architectures and user interface tools, such as the World Wide Web (WWW) and Mosaic. By incorporating TCP/IP technology, WinView for Networks application server software greatly expands the availability of information services on the Internet; since anyone familiar with Windows can publish an information service. Until now, Internet publishers had to write programs specifically for the Internet or World Wide Web, using Unix as the core operating system and following stringent rules. By putting a WinView server on the Internet, service publishers can develop interactive Windows- based services, using off-the-shelf Windows applications and development tools. This eliminates the need to have expertise in Unix. -- more -- Citrix and FTP Join Forces -- Page 3 of 4 WinView for Networks also facilitates end user access to new information services on the Internet. Many service providers offer end users simple (login) access to the Internet through Unix login accounts. Under this approach, end users do not have access to the latest Windows-based Internet tools and must learn a complex text-based Unix environment. Using WinView for Networks, Internet providers can offer a simple Windows-based login environment, which can, in turn, support modern Internet applications. For example, a WinView server, running a Mosaic front-end, can serve as an Internet gateway, providing access to the World Wide Web. Virtually any user with a PC can now browse the World Wide Web -- without the need to run Windows or Mosaic locally. Users only need a modem and the WinView client program, remote link, to gain an IP connection to the Internet to access the World Wide Web. With WinView, users gain access to a new era of interactive Windows-based services -- all sharing a standard, familiar interface. WinView gives users high-speed access to sophisticated Windows information programs, regardless of their CPU power or whether they are running Windows locally. WinView allows low-end hardware, even 286 PCs not capable of running Windows, to access Windows applications with excellent performance. The processing power required to run the small WinView client program (640KB RAM on a 286 system) is much less than that needed to run Windows 3.1 natively. All application processing occurs on the WinView server; only the user interface results are displayed at the workstation. WinView includes a distribution license for Windows 3.1, so users without Windows can access the WinView server and run Windows-based information services on the Internet. WinView acts as a secure firewall against Internet security threats. WinView includes advanced, multi-level system security to prevent users from interfering with each other; to prevent users from accessing unauthorized information; and to prevent users from damaging system operation. Access to WinView is controlled by password security, while access to resources and facilities within the system is controlled by security attributes and classifications. WinView includes remote access security features, such as dial-back, to verify remote user identity; and disconnect recovery, to maintain and password-protect disconnected remote sessions. Logon sequence encryption ensures all data going across the wire from the client to the host during the login process is encrypted, providing secure transportation of user names and passwords over phone lines and across the Internet. -- more -- Citrix and FTP Join Forces -- Page 4 of 4 Founded in 1986, FTP Software designs, develops, markets and supports internetworking software products that allow personal computer users to access networking resources across local, enterprise-wide and global networks. Considered one of the pioneering developers of TCP/IP technology for PCs, FTP Software provides internetworking solutions to a wide range of customers in a variety of industries including financial, telecommunications, pharmaceutical and government. Citrix Systems, Inc. is the industry's leading supplier of application server software. Founded in 1989, the privately held firm is headquartered in Coral Springs, Florida, and has regional sales offices throughout North America. The company's flagship product is WinView for Networks application server software, which provides fast remote access to Windows and DOS applications for NetWare networks. WinView was rated one of the five hottest new products of 1993 by the LAN 100. - # # # - For more information, contact: Vicky Gore Harris Jill LeBallister Dudka Citrix Systems, Inc. FTP Software, Inc. (305)340-2246 (508)685-4000 David Kitchen Copithorne & Bellows (617)252-0606 Citrix, WinView and ICA are trademarks of Citrix Systems, Inc. FTP Software and PC/TCP are registered trademarks of FTP Software, Inc. All other trademarks and registered trademarks are property of their respective owners.