Example VPN configuration 2: create Access rules

The rules in this example allow protected hosts to open connections both ways. Two rules are created here to allow the different directions of traffic separately.

1. Select Configuration.
2. Browse to NGFW > Policies > Firewall Policies.
3. Right-click the Firewall policy that is used by the Engines involved in the VPN, then select Edit Firewall Policy.
4. Add two IPv4 Access rules in a suitable location in the policy.
   • Make sure that rules for sending traffic through the VPN are above other rules that match the same traffic the Allow, Discard, or Refuse action.
   • Traffic that you do not want to send through the VPN must not match these rules. Traffic that is not routable through the VPN is dropped if it matches these rules.
5. Fill in the rules as outlined here. If NAT is enabled in the VPN, remember that the Access rules are checked before the NAT rules are applied.

   Table 1. Example VPN rules

   Source	Destination	Service	Action
   Local internal networks	Remote internal networks	Set as needed.	Select Allow, then open the Action options. Set VPN Action to Enforce VPN, then select a Policy-Based VPN.
   Remote internal networks	Local internal networks	Set as needed.	Select Allow, then open the Action options. Set VPN Action to Enforce VPN, then select a Policy-Based VPN.

6. Save the policy.
   CAUTION:

   If you continue to use this VPN, change the pre-shared key periodically (for example, monthly) to guarantee continued confidentiality of your data. Alternatively, you can switch to certificate-based authentication by creating a custom VPN profile.
7. Refresh the policies of all firewalls involved in the VPN to activate the new configuration.