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Part IV. Using VPNs for Secure Connectiv... > Chapter 20. Implementing IPsec Site-...
Chapter 20. Implementing IPsec Site-to-Site VPNs
This chapter covers the following subjects:
• Planning and preparing an IPsec site-to-site VPN
• Implementing and verifying an IPsec site-to-site VPN
In the previous chapters, you learned about the benefits of virtual private networks (VPN) and the protocols and methods used to implement those benefits, such as encryption for confidentiality, hashing for data integrity, and authentication for peer verification. You have also seen examples of these protocols, such as Triple Digital Encryption Standard (3DES) and Advanced Encryption Standard (AES) for encryption, message digest 5 algorithm (MD5) and Secure Hash (SHA) for data integrity, and pre-shared keys (PSK) or RSA signatures (also known as digital signatures) used for authentication.
