| Automatic NAT | Manual NAT |
|---|---|
| 1. Firewalls automatically create the Automatic NAT. | 1. Network Security Administrator manually creates the Manual NAT. |
| 2. We cannot modify the Automatic NAT. | 2. We can modify the Manual NAT. |
| 3. We cannot create Dual NAT. | 3. We can create Dual NAT. |
| 4. In Automatic NAT, port forwarding is not possible. | 4. In Manual NAT, we can do part forwarding. |
