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![Cisco IOS VPN Configuration Guide - Site-to-Site and Extranet VPN Business Scenarios [Cisco 7200 Series Routers] - Cisco](https://www.cisco.com/c/dam/en/us/td/i/000001-100000/20001-25000/23001-23500/23245.ps/_jcr_content/renditions/23245.jpg "Cisco IOS VPN Configuration Guide - Site-to-Site and Extranet VPN Business Scenarios [Cisco 7200 Series Routers] - Cisco")