- OpenVPN Cookbook - Second Edition
- OpenVPN Cookbook - Second Edition
- Credits
- About the Author
- About the Reviewer
- www.PacktPub.com
- Customer Feedback
- Preface
- 1. Point-to-Point Networks
- 2. Client-server IP-only Networks
- Introduction
- Setting up the public and private keys
- A simple configuration
- Server-side routing
- Adding IPv6 support
- Using client-config-dir files
- Routing - subnets on both sides
- Redirecting the default gateway
- Redirecting the IPv6 default gateway
- Using an ifconfig-pool block
- Using the status file
- The management interface
- Proxy ARP
- 3. Client-server Ethernet-style Networks
- 4. PKI, Certificates, and OpenSSL
- Introduction
- Certificate generation
- OpenSSL tricks - x509, pkcs12, verify output
- Revoking certificates
- The use of CRLs
- Checking expired/revoked certificates
- Intermediary CAs
- Multiple CAs - stacking, using the capath directive
- Determining the crypto library to be used
- Crypto features of OpenSSL and PolarSSL
- Pushing ciphers
- Elliptic curve support
- 5. Scripting and Plugins
- 6. Troubleshooting OpenVPN - Configurations
- Introduction
- Cipher mismatches
- TUN versus TAP mismatches
- Compression mismatches
- Key mismatches
- Troubleshooting MTU and tun-mtu issues
- Troubleshooting network connectivity
- Troubleshooting client-config-dir issues
- Troubleshooting multiple remote issues
- Troubleshooting bridging issues
- How to read the OpenVPN log files
- 7. Troubleshooting OpenVPN - Routing
- Introduction
- The missing return route
- Missing return routes when iroute is used
- All clients function except the OpenVPN endpoints
- Source routing
- Routing and permissions on Windows
- Unable to change Windows network location
- Troubleshooting client-to-client traffic routing
- Understanding the MULTI: bad source warnings
- Failure when redirecting the default gateway
- 8. Performance Tuning
- 9. OS Integration
- Introduction
- Linux - using NetworkManager
- Linux - using pull-resolv-conf
- Windows - elevated privileges
- Windows - using the CryptoAPI store
- Windows - updating the DNS cache
- Windows - running OpenVPN as a service
- Windows - public versus private network adapters
- Windows - routing methods
- Windows 8+ - ensuring DNS lookups are secure
- Android - using the OpenVPN for Android clients
- Push-peer-info - pushing options to Android clients
- 10. Advanced Configuration
- Introduction
- Including configuration files in config files
- Multiple remotes and remote-random
- Inline certificates
- Connection blocks
- Details of ifconfig-pool-persist
- Connecting using a SOCKS proxy
- Connecting via an HTTP proxy
- Connecting via an HTTP proxy with authentication
- IP-less setups - ifconfig-noexec
- Port sharing with an HTTPS server
- Routing features - redirect-private, allow-pull-fqdn
- Filtering out pushed options
- Handing out the public IPs
In this chapter, we will cover:
- Including configuration files in config files
- Multiple remotes and remote-random
- Inline certificates
- Connection blocks
- Details of
ifconfig-pool-persist - Connecting using a SOCKS proxy
- Connecting via an HTTP proxy
- Connecting via an HTTP proxy with authentication
- IP-less setups -
ifconfig-noexec - Port sharing with an HTTPS server
- Routing features -
redirect-private,allow-pull-fqdn - Filtering out pushed options
- Handing out public IP addresses
The recipes in this last chapter will cover the advanced configuration of OpenVPN. This chapter will focus on some of the less well-known configuration options that OpenVPN offers, as well as some advanced recipes for real-life deployments. The recipes will cover both advanced server configuration, such as the use of connection blocks and inline certificates, as well as advanced client configuration, such as using a proxy server to connect to an OpenVPN server.
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