# NAT for VPN gateway communications

You can apply NAT to the communications between VPN Gateways.

The communications that establish and maintain VPN tunnels between VPN Gateways are always translated according to the NAT rules. Create a matching NAT rule to translate addresses in these communications and make sure that the communications do not match the wrong NAT rule unintentionally.

When you add NAT, you might need to change VPN settings. Add contact addresses for the engines. Contact Addresses can be used with both internal and external gateways.

There is nothing VPN-specific about creating the actual NAT rules.