Cisco RV042 Administration Guide - Page 122

9 VPN Use the VPN module to configure a Virtual Private Network (VPN) to allow secure access to your site from other locations. Refer to these topics: • Introduction to VPNs, page 122 • Viewing the Summary Information for VPN, page 126 • Setting Up a Gateway to Gateway (Site to Site) VPN, page 130 • Setting Up a Remote Access Tunnel for VPN Clients (Client To Gateway), page 139 • Managing VPN Users and Certificates, page 147 • Setting Up VPN Passthrough, page 149 • Setting Up PPTP Server, page 150 Introduction to VPNs A VPN is a connection between two endpoints in different networks to allow private data to be sent securely over a shared or public network, such as the Internet. This tunnel establishes a private network that can send data securely between these two locations or networks. A VPN tunnel uses industry-standard encryption and authentication techniques to secure the data sent between the two networks. It can be used to create secure networks linking a central office with remote offices, telecommuters, and/or professionals on the road. There are several ways to create a VPN connection: • Site to Site VPN (Gateway To Gateway), page 123 • Remote Access (Client To Gateway), page 123 • Remote Access with Cisco QuickVPN, page 125 • Remote Access with PPTP, page 125 Cisco Small Business RV0xx Series Routers Administration Guide 122