Being cited as a supporter of this publication does of course mean that I could have some bias when providing a review. However, knowing and working with him personally, I can honestly say that Plamen and the entire team of contributors that actually deployed and operated Cisco's remote access infrastructure have produced a text of significant value for any engineer designing, deploying, and operating remote access services across various technologies.
Some of the technologies covered such as analog dial and ISDN may seem dated, but one must remember that in many areas these technologies are still widely deployed and of course require ongoing support. And to that end, "Troubleshooting Remote Access Networks" provides the foundation and tools to support those technologies based upon real world experience.
Having been part of the team that initially created Cisco's remote access services, it was a pleasure to see Plamen, Felicia, and the entire staff carry the torch forward and take Cisco's remote access infrastructure to the next level with global deployments and VPN solutions.
The practical expertise that Plamen and the Cisco Remote Access Team built over that time is reflected in this publication, and is invaluable for anyone supporting or designing similar services.
That being said, the only reason I give this reference 4 stars is due to its relative age to the industry. As time moves on, an updated revision that addresses changes in technologies and techniques does become desirable.
But even 5 years following its publication, this reference should be on the shelf of any remote access engineer's library. And if it is already on yours, I bet "Troubleshooting Remote Access Networks" is heavily dog-eared!