NETGEAR FVS114NA, Reference Manual

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Reference Manual for the ProSafe VPN Firewall FVS114
6-14 Advanced Virtual Private Networking
202-10098-01, April 2005
Each CA has its own certificate. The certificates of a CA are added to the FVS114 and then can be
used to form IKE policies for the user. Once a CA certificate is added to the FVS114 and a
certificate is created for a user, the corresponding IKE policy is added to the FVS114. Whenever
the user tries to send traffic through the FVS114, the certificates are used in place of pre-shared
keys during initial key exchange as the authentication and key generation mechanism. Once the
keys are established and the tunnel is set up the connection proceeds according to the VPN policy.
Certificate Revocation List (CRL)
Each Certification Authority (CA) maintains a list of the revoked certificates. The list of these
revoked certificates is known as the Certificate Revocation List (CRL).
Whenever an IKE policy receives the certificate from a peer, it checks for this certificate in the
CRL on the FVS114 obtained from the corresponding CA. If the certificate is not present in the
CRL it means that the certificate is not revoked. IKE can then use this certificate for
authentication. If the certificate is present in the CRL it means that the certificate is revoked, and
the IKE will not authenticate the client.
You must manually update the FVS114 CRL regularly in order for the CA-based authentication
process to remain valid.
Walk-Through of Configuration Scenarios on the FVS114
There are a variety of configurations you might implement with the FVS114. The scenarios listed
below illustrate typical configurations you might use in your organization.
In order to help make it easier to set up an IPsec system, the following two scenarios are provided.
These scenarios were developed by the VPN Consortium (
http://www.vpnc.org ). The goal is to
make it easier to get the systems from different vendors to interoperate. NETGEAR is providing
you with both of these scenarios in the following two formats:
• VPN Consortium Scenarios without any product implementation details
• VPN Consortium Scenarios based on the FVS114 User Interface
The purpose of providing these two versions of the same scenarios is to help you determine where
the two vendors use different vocabulary. Seeing the examples presented in these different ways
will reveal how systems from different vendors do the same thing.