Cisco SA520-K9 Administration Guide - Page 136

7 Configuring VPN This chapter describes how to configure a Virtual Private Network (VPN) to allow other sites and remote workers to access your network resources. It includes the following sections: • About VPN • Configuring a Site-to-Site VPN Tunnel • Configuring an IPsec VPN Tunnel for Remote Access with a VPN Client • Configuring SSL VPN for Browser-Based Remote Access • VeriSign™ Identity Protection configuration To access the VPN pages click VPN from the Configuration Utility menu bar. About VPN A VPN provides a secure communication channel ("tunnel") between two gateway routers or between a remote PC and a gateway router, as in the following scenarios: • Site-to-Site VPN: The VPN tunnel connects two routers to secure traffic between two sites that are physically separated. See Configuring a Siteto-Site VPN Tunnel, page 137. • Remote Access with IPsec VPN Client Software: A remote worker uses a secure VPN client software to access the corporate network. See Configuring a Site-to-Site VPN Tunnel, page 137. • Remote Access with a Web Browser: A remote worker uses a web browser to initiate a VPN tunnel to access the available services on the corporate network. See Configuring SSL VPN for Browser-Based Remote Access, page 154. Cisco SA500 Series Security Appliances Administration Guide 136