Hi Folks, I bought the above-mentioned firewall from Ebay. It is running Cisco PIX Firewall v6.3(5) and it is also running PIX Device Manager(PDM) v3.0(4), with all features enabled including failover. When I was buying this firewall I did not know that the Cisco PIX Firewall 520 have to be used in pairs i.e. A primary firewall and a secondary firewall with a failover cable between them.The seller did not mention this in their listing. My question is, Can I disable the failover feature on the device, so that it can be used alone without a primary firewall. Right now, it boots up a secondary firewall, looking for the primary.