| 13.2 |  | Serial Cable Failover Configuration |
| 13.2.1 |  | Overview of configuring serial cable failover |

| Use the following four-step process to configure failover using a serial cable. An overview of this process is provided in this section. In the sections to follow, these steps will be broken down into greater detail. Before starting this procedure, turn off the power to the standby firewall and leave it off until instructed to power it on:

1. Attach a network cable between the primary and secondary firewalls for each network interface that will be used.
2. Connect the failover cable between the primary PIX Security Appliance and the secondary PIX Security Appliance.
3. Configure the appropriate parameters on the primary PIX Security Appliance. When configuration is finished, save it to the Flash memory of the primary firewall.
4. Turn the power on to the secondary firewall.