Vpnc Ike Security Parameters; Vpnc Ike Phase I Parameters - NETGEAR ProSafe FVS114 Reference Manual

Reference Manual for the ProSafe VPN Firewall FVS114
2. IKE Phase I.
The two parties negotiate the encryption and authentication algorithms to use in the IKE
a.
SAs.
The two parties authenticate each other using a predetermined mechanism, such as
b.
preshared keys or digital certificates.
A shared master key is generated by the Diffie-Hellman Public key algorithm within the
c.
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.
The two parties negotiate the encryption and authentication algorithms to use in the IPSec
a.
SAs.
The master key is used to derive the IPSec keys for the SAs. Once the SA keys are created
b.
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

Remember that both gateways must have the identical parameters set for the process to work
correctly. The settings shown below 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
• pre-shared secret of "hr5xb84l6aa9r6"
• SA lifetime of 28800 seconds (eight hours)
C-10
202-10098-01, April 2005
Virtual Private Networking