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| Preface | |
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| Why Build a Virtual Private Network? | |
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| What Does a VPN Do? | |
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| Security Risks of the Internet | |
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| How VPNs Solve Internet Security Issues | |
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| VPN Solutions | |
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| A Note on IP Address and Domain Name Conventions Used in This Book | |
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| Basic VPN Technologies Firewall Deployment | |
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| Encryption and Authentication | |
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| VPN Protocols | |
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| Methodologies for Compromising VPNs | |
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| Patents and Legal Ramifications | |
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| Wide Area, Remote Access, and the VPN General WAN, RAS, and VPN | |
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| Concepts | |
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| VPN Versus WAN | |
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| VPN Versus RAS | |
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| Implementing Layer | |
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| Connections Differences Between PPTP, L2F, and L2TP | |
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| How PPTP Works 64 Features of PPTP | |
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| Configuring and Testing Layer | |
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| Connections Installing and Configuring PPTP on a Windows NT RAS Server | |
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| Configuring PPTP for Dial-up Networking on a Windows NT Client | |
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| Configuring PPTP for Dial-up Networking on a Windows 95 or | |
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| Client | |
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| Enabling PPTP on Remote Access Switches | |
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| Making the Calls | |
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| Troubleshooting Problems | |
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| Using PPTP with Other Security Measures | |
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| Implementing the AltaVista Tunnel | |
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| Advantages of the AltaVista Tunnel System | |
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| AltaVista Tunnel Limitations | |
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| How the AltaVista Tunnel Works | |
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| VPNs and AltaVista | |
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| Configuring and Testing the AltaVista Tunnel Getting Busy | |
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| Installing the AltaVista Tunnel | |
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| Configuring the AltaVista Tunnel Extranet and Telecommuter Server | |
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| Configuring the AltaVista Telecommuter Client | |
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| Troubleshooting Problems | |
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| Creating a VPN with the Unix Secure Shell The SSH Software | |
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| Building and Installing SSH | |
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| SSH Components | |
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| Creating a VPN with PPP and SSH | |
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| Troubleshooting Problems | |
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| A Performance Evaluation | |
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| The Cisco PIX Firewall The Cisco PIX Firewall | |
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| The PIX in Action | |
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| Configuring the PIX as a Gateway | |
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| Configuring the Other VPN Capabilities | |
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| Managing and Maintaining Your VPN Choosing an ISP | |
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| Solving VPN Problems | |
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| Delivering Quality of Service | |
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| Security Suggestions | |
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| Keeping Yourself Up-to-Date | |
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| A VPN Scenario The Topology | |
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| Central Office | |
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| Large Branch Office | |
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| Small Branch Offices | |
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| Remote Access Users | |
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| A Network Diagram | |
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| A. Emerging Internet Technologies | |
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| B. Resources, Online and Otherwise | |
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| Index | |