Cent OS 7에서 iptables 사용하기
1. firewalld 중지 및 해제하기
systemctl stop firewalld
systemctl mask firewalld
systemctl status firewalld (firewalld 상태 확인)
* firewalld.service
Loaded: masked (/dev/null; bad)
Active: inactive (dead)
위와 같이 나오면 정상적으로 죽은 것이다.
2. iptables service 설치
yum -y install iptables-services
systemctl enable iptables
systemctl start iptables
systemctl status iptables (iptables 데몬 상태 확인)
* iptables.service - IPv4 firewall with iptables
Loaded: loaded (/usr/lib/systemd/system/iptables.service; disabled; vendor preset: disabled)
Active: active (exited) since 수 2021-02-03 05:14:07 KST; 1h 26min ago
Main PID: 9989 (code=exited, status=0/SUCCESS)
2월 03 05:14:07 localhost.localdomain systemd[1]: Starting IPv4 firewall with iptables...
2월 03 05:14:07 localhost.localdomain iptables.init[9989]: iptables: Applying firewall rules: [ OK ]
2월 03 05:14:07 localhost.localdomain systemd[1]: Started IPv4 firewall with iptables.
위와 같이 나오면 정상적으로 시작 된 것이다.