News, Press & Events

FOR IMMEDIATE RELEASE

F5 Networks to Present at The Fifth Annual JMP Securities Research Conference

SEATTLE, February 27, 2006

F5 Networks, Inc. (NASDAQ: FFIV), the global leader in Application Delivery Networking, announced today that company management will be presenting at The Fifth Annual JMP Securities Research Conference to be held at The Ritz-Carlton Hotel in San Francisco, CA. F5's presentation will start at 2:25pm PST on Thursday, March 9, 2006. F5 presenters include Andy Reinland, SVP & Chief Finance Officer, and Dan Matte, SVP Marketing. F5's presentation will be webcast and accessible until April 9, 2006. Interested viewers can go to www.f5.com/about/investor-relations/events-calendar.html to access a direct link to the webcast.

About F5 Networks

F5 Networks is the global leader in Application Delivery Networking. F5 provides solutions that make applications secure, fast, and available for everyone, helping organizations get the most out of their investment. By adding intelligence and manageability into the network to offload applications, F5 optimizes applications and allows them to work faster and consume fewer resources. F5's extensible architecture intelligently integrates application optimization, protects the application and the network, and delivers application reliability - all on one universal platform. The company is headquartered in Seattle, Washington with offices worldwide. Additional information about F5 is available on the company's website (www.f5.com) and in its SEC filings.

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