iptables -L INPUT --line-numbers -v
iptables -A INPUT -s 58.245.23.126/24 -j DROP
iptables -D INPUT 3
pre-up iptables-restore < firewall.txt Making changes persistent in CentOS 5iptables rules are stored in memory. If the system is restarted, all rules are lost. To save rules: /sbin/service iptables save This executes the iptables init script, which runs the /sbin/iptables-save program and writes the current iptables configuration to /etc/sysconfig/iptables. The existing /etc/sysconfig/iptables file is saved as /etc/sysconfig/iptables.save. The next time the system boots, the iptables init script reapplies the rules saved in /etc/sysconfig/iptables by using the /sbin/iptables-restore command. |
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