Document Application - Internet Key Exhange Online For Free

IKE Protocol IKE (Internet Key Exchange) is a protocol used to set up security associations for IPSec. These security associations establish shared session secrets from which keys are derived for encryption of tunneled data. IKE is also used to authenticate the two IPSec peers.

IKE negotiation includes two phases: Phase 1?Negotiate exchange of proposals for how to authenticate and secure the channel. Phase 2?Negotiate security associations (SAs) to secure the data that traverses through the IPsec tunnel.

After the tunnel is secured and authenticated, in Phase 2 the channel is further secured for the transfer of data between the networks. IKE Phase 2 uses the keys that were established in Phase 1 of the process and the IPSec Crypto profile, which defines the IPSec protocols and keys used for the SA in IKE Phase 2.

IKE builds the VPN tunnel by authenticating both sides and reaching an agreement on methods of encryption and integrity. The outcome of an IKE negotiation is a Security Association (SA). This agreement upon keys and methods of encryption must also be performed securely. For this reason, IKE is composed of two phases.

The phase 2 Security Association contains the keys that are used to encrypt and decrypt IPSec packets on the host, authenticate IPSec packets on the host, or both.

VPN negotiations happen in two distinct phases: Phase 1 and Phase 2. Phase 1. The main purpose of Phase 1 is to set up a secure encrypted channel through which the two peers can negotiate Phase 2. When Phase 1 finishes successfully, the peers quickly move on to Phase 2 negotiations.

IKE is comprised of two phases. In phase 1, IKE creates an authenticated, secure channel between the two IKE peers. In phase 2, IKE negotiates the IPSec security associations and generates the required key material for IPSec.