Cisco Systems® provides the most feature-rich and flexible site-to-site VPN solutions in the industry. Cisco® site-to-site VPN solutions integrate advanced network intelligence and routing to deliver reliable transport for complex mission-critical traffic, such as voice and client-server applications, without compromising communications quality. These solutions are built on five underlying VPN technologies: Dynamic Multipoint VPN (DMVPN), Easy VPN, GRE tunneling, standard IP Security (IPsec),and the new Group Encrypted Transport VPN (GET-VPN). Each technology has it benefits and is customized to meet specific deployment requirements. Following BMP file has a comparison of the technologies and guidance on when to use them. Download the file and compare.