# Configuring a NAT License

You must configure a NAT license before you can use any NAT commands on the ERX router.

license nat

- Use to specify a NAT license.
- Purchase a NAT license to allow NAT configuration on the ERX router.

  | Note: Acquire the license from Juniper Networks Customer Services and Support or from your Juniper Networks sales representative.

- Example
  host1(config)#license nat license-value
- Use the no version to disable the license.
- See license nat.