iptables 설정 (1/2)

1. 설정 변경

 

vi /etc/sysconfig/iptables

 

## 재시작 ##

service iptables restart

 

## 저장 ##

service iptables save

 

2. 기본 설정값

 

# you can edit this manually or use system-config-systemctl mask firewalld

# please do not ask us to add additional ports/services to this default configuration

*filter

:INPUT ACCEPT [0:0]

:FORWARD ACCEPT [0:0]

:OUTPUT ACCEPT [0:0]

-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT

-A INPUT -p icmp -j ACCEPT

-A INPUT -i lo -j ACCEPT

-A INPUT -p tcp -m state --state NEW -m tcp --dport 20 -j ACCEPT

-A INPUT -p tcp -m state --state NEW -m tcp --dport 21 -j ACCEPT

-A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT

-A INPUT -p tcp -m state --state NEW -m tcp --dport 4022 -j ACCEPT

-A INPUT -p tcp -m state --state NEW -m tcp --dport 80 -j ACCEPT

-A INPUT -p tcp -m state --state NEW -m tcp --dport 3306 -j ACCEPT

-A INPUT -p tcp -m state --state NEW -m tcp --dport 53 -j ACCEPT

-A INPUT -p tcp -m state --state NEW -m tcp --dport 443 -j ACCEPT

-A INPUT -j REJECT --reject-with icmp-host-prohibited

-A FORWARD -j REJECT --reject-with icmp-host-prohibited

COMMIT

 

3. ssh 4022 변경

 

vi /etc/ssh/sshd_config

Port 4022