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traffic from the Nat process. Additionally the show commands are limited and there is no debug command, this limits the ability to troubleshoot issues. Before we begin our lab we need to get a better understanding of site-to site VPNs, and why do we need them? If we have two sites that are geography separated and we need to communicate between them we have two choices. First we can purchases a dedicated line between the two sites but this is very costly. Second we can use the Internet that we already have access to and employ a VPN. A site-to-site VPN is a Virtual Private Network that allow us to tunnel through the internet creating a private network connection been our two sites. Tunneling makes it possible to use a public TCP/IP network, such as the Internet, to create secure connections between remote users and a private corporate network. Each secure connection is called a tunnel. The ASA uses the ISAKMP and IPsec tunneling standards to build and manage tunnels. ISAKMP and IPsec

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