How to Block Facebook in Mikrotik Script
/ip firewall filter add chain=forward content="facebook.com" action=drop comment="Drop Facebook"
/ip firewall filter add chain=forward content="www.facebook.com" action=drop comment="Drop Facebook"
/ip firewall filter add chain=forward content="apps.facebook.com" action=drop comment="Drop Facebook"
/ip firewall filter add chain=forward content="facebook" action=drop comment="Drop Facebook"
/ip firewall filter add chain=forward content="facebook.*" action=drop comment="Drop Facebook"