Chapter 11 IPsec VPN for FortiOS 5.0 : Internet-browsing configuration : Routing all remote traffic through the VPN tunnel : Configuring a FortiClient application to support Internet browsing
  
Configuring a FortiClient application to support Internet browsing
By default, the FortiClient application configures the PC so that traffic destined for the remote protected network passes through the VPN tunnel but all other traffic is sent to the default gateway. You need to modify the FortiClient settings so that it configures the PC to route all outbound traffic through the VPN.
To route all traffic through VPN - FortiClient application
1. At the remote host, start FortiClient.
2. Go to VPN > Connections.
3. Select the definition that connects FortiClient to the FortiGate dialup server.
4. Select Advanced and then select Edit.
5. In the Edit Connection dialog box, select Advanced.
6. In the Remote Network group, select Add.
7. In the IP and Subnet Mask fields, type 0.0.0.0/0.0.0.0 and select OK.
The address is added to the Remote Network list. The first destination IP address in the list establishes a VPN tunnel. The second destination address (0.0.0.0/0.0.0.0 in this case) forces all other traffic through the VPN tunnel.
8. Select OK.