Explanation

Reference:
https://www.cisco.com/c/en/us/td/docs/security/firepower/640/configuration/guide/fpmc-configguide-v64/detecti

Explanation In its essence, FlexVPN is the same as DMVPN. Connections between devices are still point-to-point GRE tunnels, spoke-to-spoke connectivity is still achieved with NHRP redirect message, IOS routers even run the same NHRP code for both DMVPN and FlexVPN, which also means that both are Cisco's proprietary technologies. Reference: https://packetpushers.net/cisco-flexvpn-dmvpn-high-level-design/ In its essence, FlexVPN is the same as DMVPN. Connections between devices are still point-to-point GRE tunnels, spoke-to-spoke connectivity is still achieved with NHRP redirect message, IOS routers even run the same NHRP code for both DMVPN and FlexVPN, which also means that both are Cisco's proprietary technologies.
Explanation In its essence, FlexVPN is the same as DMVPN. Connections between devices are still point-to-point GRE tunnels, spoke-to-spoke connectivity is still achieved with NHRP redirect message, IOS routers even run the same NHRP code for both DMVPN and FlexVPN, which also means that both are Cisco's proprietary technologies. Reference: https://packetpushers.net/cisco-flexvpn-dmvpn-high-level-design/

https://www.cisco.com/c/en/us/solutions/collateral/enterprise-networks/advanced-malware-protection/at-a-glance-c45-731874.html

https://www.cisco.com/c/en/us/products/security/what-is-a-ddos-attack.html#~types-of-ddos-attacks