Foreword

Dear reader,

My name is Frederic Detienne and I had the chance to participate during the early days and eventually to lead cryptographic product development in Cisco, acting as Architect of DMVPN and FlexVPN. I started as a TAC Engineer and have evolved into network designer and consultant, inside Cisco and toward our customers. I work across functions with our Engineering, Advanced Services, Support, and Marketing departments.

It seems like yesterday or many eons ago ... In the beginning were crypto maps.

A few dinosaurs (like myself) started their journey in cryptographic protocols and algorithms when Cisco released CET (Cisco Encryption Technology) on IOS 11.2 in August 2003.

My only exposure to cryptography had been strictly theoretical, ...

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