Exhibit 32.1
CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
In connection with the Annual Report of F5 Networks, Inc. (the
“Company”) on Form 10-K for the period ended
September 30, 2005 as filed with the Securities and
Exchange Commission on the date hereof (the “Report”),
we, John McAdam, President and Chief Executive Officer and John
Rodriguez, Senior Vice President and Chief Accounting Officer
(principal financial officer) of the Company, certify, pursuant
to 18 U.S.C. § 1350, as adopted pursuant to
§ 906 of the Sarbanes-Oxley Act of 2002, that:
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(1) The Report fully complies with the requirements of
Section 13(a) or 15(d) of the Securities Exchange Act of
1934; and |
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(2) The information contained in the Report fairly
presents, in all material respects, the financial condition and
result of operations of the Company. |
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John McAdam |
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/s/ JOHN RODRIGUEZ |
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Date: December 12, 2005
A signed original of this written statement required by
Section 906, or other document authenticating,
acknowledging, or otherwise adopting the signature that appears
in typed form within the electronic version of this written
statement required by Section 906, has been provided to F5
Networks, Inc., and will be retained by F5 Networks, Inc., and
furnished to the Securities and Exchange Commission or its staff
upon request.