firewall 특정 아이피 막기 1. 특정 IP 막기 Vim sudo firewall-cmd --permanent --add-rich-rule='rule family="ipv4" source address=69.30.0.0/16 reject' 123 sudo firewall-cmd --permanent --add-rich-rule='rule family="ipv4" source address=69.30.0.0/16 reject' 2. firewall 적용 Vim firewall-cmd –reload 123 firewall-cmd –reload 3. firewall 적용 확인 Vim firewall-cmd –list-all 123 firewall-cmd –list-all 4. IP 풀기 Vim sudo firewall-cmd --permanent --remove-rich-rule='rule family="ipv4" source address=69.30.0.0/16 reject 123 sudo firewall-cmd --permanent --remove-rich-rule='rule family="ipv4" source address=69.30.0.0/16 reject 4.1 firewall 적용 Vim firewall-cmd –reload 123 firewall-cmd –reload