John Pickard

John Pickard is the network engineering expert who wrote the O'Reilly title "Cisco ICND1 100-105 Exam Training". A Cisco Certified Network Academy Instructor, college professor, and former U.S. Air Force technical trainer with over 16 years of experience teaching network engineering, John holds numerous certifications (CCNP, IPv6 Forum Certified Gold Engineer and Trainer, etc.) as well as a PhD in Technology Management from Indiana State University.

Content

What is the OSI model?

May 30, 2017

Learn about what may be the single most important networking concept that helps different systems communicate—the OSI model.

How do I recover the password on a Cisco router without losing its configuration?

Learn how to change the configuration register so that a router password can be recovered without losing any configurations.

How do I configure a Cisco router for secure remote access using SSH?

Learn the configuration steps required to enable a Cisco router to accept Secure Shell (SSH) connections over the virtual terminal (VTY) lines.