Netgear FWG114Pv1 FWG114P Reference Manual - Page 244
VPNC IKE Security Parameters
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Reference Manual for the ProSafe Wireless 802.11g Firewall/Print Server Model FWG114P 2. IKE Phase I. a. The two parties negotiate the encryption and authentication algorithms to use in the IKE SAs. b. The two parties authenticate each other using a predetermined mechanism, such as preshared keys or digital certificates. c. A shared master key is generated by the Diffie-Hellman Public key algorithm within the IKE framework for the two parties. The master key is also used in the second phase to derive IPSec keys for the SAs. 3. IKE Phase II. a. The two parties negotiate the encryption and authentication algorithms to use in the IPSec SAs. b. The master key is used to derive the IPSec keys for the SAs. Once the SA keys are created and exchanged, the IPSec SAs are ready to protect user data between the two VPN gateways. 4. Data transfer. Data is transferred between IPSec peers based on the IPSec parameters and keys stored in the SA database. 5. IPSec tunnel termination. IPSec SAs terminate through deletion or by timing out. VPNC IKE Security Parameters It is important to remember that both gateways must have the identical parameters set for the process to work correctly. The settings in these examples follow the examples given for Scenario 1 of the VPN Consortium. VPNC IKE Phase I Parameters The IKE Phase 1 parameters used: • Main mode • TripleDES • SHA-1 • MODP group 1 • Ppre-shared secret of "hr5xb84l6aa9r6" • SA lifetime of 28800 seconds (eight hours) F-10 March 2004, 202-10027-01 Virtual Private Networking