Netgear FWG114Pv1 – Wireless Firewall with USB Print Server Guide D’Exploitation

8-2

Virtual Private Networking

You create policy definitions to manage VPN traffic on the FWG114P. There are two kinds of 
policies:

•

IKE Policies: Define the authentication scheme and automatically generate the encryption 
keys. As an alternative option, to further automate the process, you can create an IKE policy 
which uses a trusted certificate authority to provide the authentication while the IKE policy 
still handles the encryption.

•

VPN Policies: Apply the IKE policy to specific traffic which requires a VPN tunnel. Or, you 
can create a VPN policy which does not use an IKE policy but in which you manually enter all 
the authentication and key parameters.

Since the VPN policies use the IKE policies, you define the IKE policy first. The FWG114P also 
allows you to manually input the authentication scheme and encryption key values. In the case of 
manual key management there will not be any IKE policies.  

In order to establish secure communication over the Internet with the remote site you need to 
configure matching VPN policies on both the local and remote FWG114P Wireless Firewall/Print 
Servers. The outbound VPN policy on one end must match to the inbound VPN policy on other 
end, and vice versa.

When the network traffic enters into the FWG114P from the LAN network interface, if there is no 
VPN policy found for a type of network traffic, then that traffic passes through without any 
change. However, if the traffic is selected by a VPN policy, then the IPSec authentication and 
encryption rules will be applied to it as defined in the VPN policy.

By default, a new VPN policy is added with the least priority, that is, at the end of the VPN policy 
table. 

The most common configuration scenarios will use IKE policies to automatically manage the 
authentication and encryption keys. Based on the IKE policy, some parameters for the VPN tunnel 
are generated automatically. The IKE protocols perform negotiations between the two VPN 
endpoints to automatically generate required parameters. 

Some organizations will use an IKE policy with a Certificate Authority (CA) to perform 
authentication. Typically, CA authentication is used in large organizations which maintain their 
own internal CA server. This requires that each VPN gateway has a certificate from the CA. Using 
CAs reduces the amount of data entry required on each VPN endpoint.