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Free ebooks
 More computer ebooks Networking Virtual Private Networks (2nd Edition) - O'Reilly
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 Chapter 1 - Do you need a virtual private network? Good question. Read this chapter and find out. After we scare you with some common security breaches, you will find some comforting reasons why a virtual private network may be your solution.Chapter 2 - Still here? This chapter details the various pieces that make a VPN function and make it more secure. Firewalls, encryption/authentication, and some basic VPN protocols and standards are covered. Chapter 3 - How much is this going to cost me? Justifying the cost of all these technologies is possible once you delve into the exciting world of VPN bean counting. In this chapter, the VPN's costs and benefits are weighed against the more traditional solutions: private lease-line Wide Area Network (WAN) and remote access. Chapter 4 - What's a specific solution for my VPN? Well, there are several. We start with one of the cheapest versions (free!): Point-to-Point Tunneling Protocol, or, as we call it in the industry, PPTP. PPTP has recently been updated and broadened into the L2TP protocol? Chapter 5 - Okay, I've decided to use your PPTP or L2TP—but how? Here is everything you ever wanted to know about getting it running. Chapter 6 - PPTP/L2TP isn't enough for me—do you have anything else? Actually, yes. The AltaVista Tunnel is the newest entrant into the VPN world; it has proven to be a stable solution. Here we cover how the AltaVista Tunnel works, its advantages and limitations, and how it may fit into your VPN scenario. Chapter 7 - Okay, how do I make it work? We cover configuring server and client pieces on Windows NT and Windows 95, as well as mentioning a few Unix versions out there. We also cover testing and troubleshooting. Chapter 8 - Years before commercial vendors offered the turn-key solutions described so far in this book, Unix administrators were securing connections through the Secure Shell (SSH). Chapter 9 - What's the top of the line? For now, we've found Cisco PIX to offer the most features and bandwidth—an expensive choice, but perhaps the only one that large sites will find satisfactory. Chapter 10 - Now what's wrong? Someone can't dial in, or a connection that worked fine yesterday is down. This chapter takes you through the various points on the network where access has failed. It also offers suggestions for policies that increase security on the VPN. Chapter 11 - Okay, show me one that actually works. Well, here's a real live working VPN from a real live company, though the names are changed to protect everyone involved. This chapter shows a VPN scenario in all its glory, detailing the needs of a company and how the VPN saved the day. Download free ebook for networking: Virtual Private Networks (2nd Edition)
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