EXHIBIT 23.1


           Consent of Independent Registered Public Accounting Firm


We  hereby  consent  to the  incorporation  by  reference  in this  Registration
Statement  on Form S-8 of our report  dated  October  24,  2003  relating to the
consolidated financial statements and financial statement schedule, which appear
in the F5 Networks, Inc. Annual Report on Form 10-K for the year ended September
30, 2003.




/s/ PricewaterhouseCoopers LLP
Seattle, Washington
June 4, 2004