156-582 · Question #21
What is the name of a protocol for VPN establishment and negotiation?
The correct answer is D. IKE. IKE (Internet Key Exchange) is the protocol used for establishing and negotiating VPN connections. It facilitates the negotiation of cryptographic keys and the authentication of the communicating parties, forming the foundation for secure IPsec VPN tunnels. While IPsec is the…
Question
What is the name of a protocol for VPN establishment and negotiation?
Options
- ANAT-T
- BIPsec
- CVPN
- DIKE
How the community answered
(41 responses)- A2% (1)
- B10% (4)
- C5% (2)
- D83% (34)
Explanation
IKE (Internet Key Exchange) is the protocol used for establishing and negotiating VPN connections. It facilitates the negotiation of cryptographic keys and the authentication of the communicating parties, forming the foundation for secure IPsec VPN tunnels. While IPsec is the suite used for securing communications, IKE specifically handles the establishment and negotiation aspects.
Topics
Community Discussion
4
Fatima Z.Dec 3, 2025IKE (Internet Key Exchange) is your answer, and here is the hook to lock it in forever: think "I Knock, Enter" because IKE is literally the protocol that knocks on the door and negotiates the terms before the VPN tunnel lets you in. IPsec is the bodyguard that protects the data AFTER the door opens, NAT-T is just a workaround for firewall issues, and VPN is the whole concept, not a protocol, so D is the only one that fits "establishment and negotiation" perfectly.
Dervla O.Nov 21, 2025I almost locked in B because IPsec is so synonymous with VPN tunnels that it feels like the obvious pick, but the stem asks specifically about establishment and negotiation, and that is IKE's job. IPsec is the framework that protects the traffic after IKE does the handshake and builds the security association, so D is the only answer that answers what the question actually asks.
Hiroshi T.Nov 25, 2025B is the answer here. IPsec is defined in RFC 4301 as the protocol suite that handles VPN establishment and negotiation, covering both the security associations and the negotiation framework that underpins site-to-site and remote access VPN tunnels. IKE is a component that operates within the IPsec architecture, not a standalone VPN protocol, and the question asks for the protocol that covers establishment and negotiation as a whole, which points squarely to IPsec.
Dervla O.Nov 26, 2025Hiroshi, the question is isolating the negotiation and establishment phase specifically, and that work belongs to IKE, which handles the key exchange and security association setup that IPsec then uses to protect traffic. IPsec is the broader framework, but D is the right pick because IKE is the protocol doing the actual negotiation.