Secure VPNS
IPSec
IPSec with IKEv2 in Tunnel mode is an Industry Standard.
- OK for point-to-point
- No Dynamic Routing
- No Multicast
GRE IPSec
- Tunnels Multicast
GETVPN
- Cisco Proprietary
- One SA for the entire group
- Native Multicast
DMVPN
- Automates the setup of point-to-point SAs.
- Works over the Internet
- Tunnels Multicast
SD-WAN
- Controller based
- Supports ZTP
- Managed via webpage
- Tunnels Multicast