I have Windows 7 Home Premium running on a Dell Studio 1555 Laptop. I wish to create a static ARP entry for my default gateway on the LAN to protect against Man-in-the-middle attacks. I use the following command from the 'administrator level' CMD command prompt: C:\Windows\system32> netsh interface ipv4 add neighbors "Local Area Connection" "172.19.0.1" "xx-xx-xx-xx-xx-xx" The command completes successfully. In fact I do get a static entry for the default gateway listed in the output of : arp -a However, within a very short time, the static ARP entry is relegated back to the 'dynamic' type in the output of arp -s. Please suggest a working solution to create static ARP entries which sticks across system reboots. Thanks.

Hi, I would like to share you the following articles to create a static ARP entry. Static ARP entry addition failure ARP Caching Thanks, Novak

Sorry to revive this, but I have a very similar problem. In the good old days of XP these commands worked like a dream: arp -s 192.168.1.6 00-04-a3-00-a9-f9 arp -s 192.168.1.7 00-04-a3-00-a9-f9 Under Windows 7 this is no longer possible, so I have tried to revert to using netsh but it doesn't work?! e.g. netsh interface ip delete arpcache netsh interface ipv4 add neighbors "Local Area Connection" 192.168.1.6 00-04-a3-00-a9-f9 arp -a Results in "No entries found" A minute or so later "arp -a" will result in: Interface: 192.168.11.6 --- 0xc Internet Address Physical Address Type 192.168.11.1 00-16-01-b0-4c-9a dynamic Anyone have any ideas what is going on, or how I can troubleshoot it? Sincerest thanks in advance Joe.