# Create outbound load-balancing NAT rules

If you manually configured Outbound Multi-Link elements, define NAT rules using the source NAT addressing defined in the Outbound Multi-Link element.

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Note: When you use element-based NAT, NAT rules are automatically generated.

You can create several Outbound Multi-Link elements to balance different types of traffic differently. Only the part of traffic that matches a NAT rule with the Outbound Multi-Link element is balanced between different links.

Some protocols cannot use dynamic NAT based on IP/port translation. To provide high availability and load balancing for these protocols, you can use static NAT with an Outbound Multi-Link element in an outbound load-balancing NAT rule. When static NAT is used, the size of the source network must be the same as the size of the Multi-Link network.

For more details about the product and how to configure features, click Help or press F1.

## Steps

1. Select Engine.
2. Browse to Policies > Engine Policies.
3. Right-click a Engine Policy and select Edit.
4. On the IPv4 NAT tab, add a rule.
5. Specify the source, destination, and service according to the traffic that you want to match.
6. Double-click the NAT cell.
7. Configure the settings, then click OK.
8. Click Save and Install.