DE-ARP
Protect the gateway against the ARP Injection Spoofing Technique.
This application will identify your local network gateway address. With the information about the manufacturer and physical address, you can confirm that information and create a static and permanent (in the registry) protection for "outbound traffic through the gateway" against the Injection ARP Spoof Technique, using static ARP entries.
Remind that this application doesn't ensures 100% level of protection by itself, its use must be combined with a solid security information policy...