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S-1/A - AMENDMENT NO. 2 TO FORM S-1 - Palo Alto Networks Incd318373ds1a.htm

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the reference to our firm under the caption “Experts” and to the use of our report dated April 6, 2012 in Amendment No. 2 to the Registration Statement (Form S-1 No. 333-180620) and related Prospectus of Palo Alto Networks, Inc. for the registration of shares of its common stock.

/s/ Ernst & Young LLP

San Francisco, California

June 7, 2012