1. create address list in /ip firewall address list
1.1 address facebook.com
1.2 define name Fb
Result :
/ip firewall address-list
add address=facebook.com list=fb
2. create firewall filter rules
/ip firewall filter
add action=drop chain=forward comment="FW Rule Block FB testing" \
dst-address-list=fb dst-address-type="" src-address=10.0.0.4
***src-addr may be host or network***
