How to automatically save iptables rules in CentOS

1. redirection example I want to add an ip to prohibit access # Disable all ports/sbin/iptables-IINPUT-s5.39.67.46-pTCP-jDROP # Disable port 80/sbin/iptables-IINPUT-s183.2.145.98-pTCP -- dport80-jDROP1.2. redirect save/sbin/iptables-save 1. for example, if you want to add an ip address to prohibit access
# Disable all ports
/Sbin/ Iptables-I INPUT-s 5.39.67.46-p TCP-j DROP
# Disable port 80
/Sbin/iptables-I INPUT-s 183.2.145.98-p TCP -- dport 80-jDROP
1. 2. save redirection
/Sbin/iptables-save | cat>/etc/sysconfig/iptables
1. 3. restart
Service iptables restart;

2. modify the configuration file/etc/sysconfig/iptables-config
IPTABLES_SAVE_ON_STOP = no. replace "no" with "yes"
# Disable all ports
/Sbin/iptables-I INPUT-s 5.39.67.46-p TCP-j DROP
# Disable port 80
/Sbin/iptables-I INPUT-s 183.2.145.98-p TCP -- dport 80-jDROP
Service iptables restart;
In this way, the existing rules are automatically saved before the service is stopped.
Go to the/etc/sysconfig/iptables file.