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Are you David Zientara, author of the books below?
Mastering pfSense by David Zientara Mastering pfSense by David Zientara Mastering pfSense, by David Zientara Mastering pfSense by David Zientara Learn pfSense 2.4 by David Zientara pfSense 2.x Cookbook by David Zientara Mastering Pfsense, by David Zientara


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