Prestige 2602HWL-DxA Support Notes
What is SA?
A Security Association (SA) is a contract between two parties indicating what security parameters, such as keys and algorithms they will use.
What is IKE?
IKE is short for Internet Key Exchange. Key Management allows you to determine whether to use IKE (ISAKMP) or manual key configuration to set up a VPN.
There are two phases in every IKE negotiation- phase 1 (Authentication) and phase 2 (Key Exchange). Phase 1 establishes an IKE SA and phase 2 uses that SA to negotiate SAs for IPSec.
What is Pre-Shared Key?
A
What are the differences between IKE and manual key VPN?
The only difference between IKE and manual key is how the encryption keys and SPIs are determined.
•For IKE VPN, the key and SPIs are negotiated from one VPN gateway to the other. Afterward, two VPN gateways use this negotiated keys and SPIs to send packets between two networks.
•For manual key VPN, the encryption key, authentication key (if needed), and SPIs are predetermined by the administrator when configuring the security association.
IKE is more secure than manual key, because IKE negotiation can generate new keys and SPIs randomly for the VPN connection.
What is Phase 1 ID for?
In IKE phase 1 negotiation, IP address of remote peer is treated as an indicator to decide which VPN rule must be used to serve the incoming request. However, in some application, remote VPN box or client software is using an IP address dynamically assigned from ISP, so Prestige needs additional information to make the decision. Such additional information is what we call phase 1 ID. In the IKE payload, there are local and peer ID field to achieve this.
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