In my case, aside from the legal requirements in my country (which I have no intention of writing about, it's off-topic),
search tag # rextended default firewall rules
WARNING: default WAN and LAN interface list must be defined
WARNING: if you do not know what you are doing, you probably lose control of your device
MikroTik RouterOS 6.49.19 default firewall rules (fixed for reflect new 7.21.2 / 7.22rc1 rules change)
for IPv4 must be also created interface lists, remember to correct assign interfaces inside lists and bridge.
/interface list
add name=WAN comment=defconf
add name=LAN comment=defconf
/interface l…