my/FAQ/block-80port.txt

# "<--Block HTTP:80-->"

# sudo firewall-cmd --permanent --direct --add-rule ipv4 filter OUTPUT 0 -p tcp -m tcp --dport 80 -j REJECT
# sudo firewall-cmd --permanent --direct --add-rule ipv6 filter OUTPUT 0 -p tcp -m tcp --dport 80 -j REJECT

# sudo firewall-cmd --reload