Код:
@echo off
set rname=blacklist
set ip=114.215.84.35
for /F "tokens=2* delims=: " %%i in ('netsh advfirewall firewall show rule name^=%rname% ^| findstr "RemoteIP"') do (
netsh advfirewall firewall set rule name=%rname% new remoteip=%%i,%ip%
)
netsh advfirewall firewall show rule name^=%rname%
