Block ARP poisioning (Win10)

fix-arp.bat

@echo OFF
rem TODO: testing on XP and 7
rem TODO: robustness checking
rem YOU MUST EDIT THE 3 VARIABLES BELOW TO BE CORRECT:
set C_IFACE="Ethernet (1)"
set R_MAC="46-7f-2c-af-e2-2b"
set R_IP="192.168.0.1"

echo Current ARP entry for %R_IP% on "%C_IFACE%":
rem TODO: Should I remove the interface= flag and just show all entries? It might make troubleshooting easier in the event that there are some stale static entries stored after the user changes NICs
netsh interface ipv4 show neighbors interface=%C_IFACE% | findstr -c:%R_IP%

set r=N
echo Would you like to delete the static entry?
set /p r=(y/N)
if /I NOT %r:~0,1% == Y goto skipdel

echo Deleting current entry...
netsh interface ipv4 delete neighbors %C_IFACE% %R_IP%
:skipdel

set r=N
echo Would you like to add the static entry?
set /p r=(y/N) 
if /I NOT %r:~0,1% == Y goto skipadd

echo Adding new entry...
netsh interface ipv4 add neighbors %C_IFACE% %R_IP% %R_MAC%
:skipadd

echo Current ARP entry for %R_IP%:
netsh interface ipv4 show neighbors address=%R_IP% | findstr -c:%R_IP%

pause