An IP Security (IPsec) VPN uses the Internet to connect branch offices, remote employees, and business partners to the resources of your company. It is a reliable way to maintain your company privacy while streamlining operations, reducing costs, and allowing flexible network administration. VPNs are an integral part of any security architecture. Providing confidentiality, integrity, and endpoint authentication, VPNs are ubiquitous and provide data loss prevention mechanisms for data that is in transit at multiple levels. From Secure Sockets Layer (SSL) VPNs to IP Security (IPsec) VPNs, site-to-site VPNs, or remote-access options, this security control is now embedded in networks and applications and should be available in a transparent and manageable fashion. This course introduces the cryptographic elements of VPNs, including symmetric and asymmetric algorithms, and describes the components, deployment options, and operational framework of VPN technologies. A public key infrastructure (PKI) is an increasingly critical component to ensure confidentiality, integrity, and authentication in an enterprise. PKI is based on the fundamentals of asymmetric encryption. PKI uses the power of private and public keys, digital signatures, and trust models that are derived from asymmetric encryption. PKI provides services that range from identity management to software code signing, and from encrypted file systems and email to VPNs and others. This course discusses the principles behind asymmetric encryption that result in PKI solutions and explains the operational framework of such solutions.

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