Company XYZ has 30 sites running a legacy private WAN architecture that connects to the Internet via multiple high-speed connections. The company is now redesigning their network and must comply…

S-VTI creates static point-to-point tunnel interfaces that require manual configuration for every peer pair and do not support the dynamic spoke-to-spoke connectivity needed for 30+ sites.

IPsec provides the cryptographic security layer required to protect corporate data in transit across the Internet-based overlay, satisfying the requirement for secure data transfer over the private WAN.

DMVPN enables dynamic multipoint connectivity so sites communicate directly without hub-mediated tunnels, uses the Internet as the underlay transport via mGRE, and scales easily for future site additions through NHRP dynamic registration.

GET VPN is designed for private MPLS or trusted private WAN underlays because it preserves original IP headers and relies on a multicast-capable private network - it cannot function over the public Internet.

PPTP is a deprecated tunneling protocol with known cryptographic weaknesses (MS-CHAPv2, RC4) that fails the requirement for secure corporate data transfer.