How do i configure iptables on redhat?
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This is not for firewalld, which is the recommended way of using packet filtering on redhat 7 and later version of centos & fedora.
The redhat 6/7 configuration files are located at /etc/sysconfig/ip6tables-config & /etc/sysconfig/iptables-config
In there you can configure things such as saving the rules on stopping iptables and restoring them on starting.
This section says you need to use /etc/sysconfig/iptables for IPv4 and /etc/sysconfig/ip6tables for IPv6 to store your rules.
# Save current firewall rules on stop. # Value: yes|no, default: no # Saves all firewall rules to /etc/sysconfig/iptables if firewall gets stopped # (e.g. on system shutdown). IPTABLES_SAVE_ON_STOP="no"If you edit the rules, they are not persistent across reboots, the commands below save to /etc/sysconfig/iptables & /etc/sysconfig/ip6tables, if you have configured your iptables configs to read these files on boot & restart, your rules will be applied.
$ sudo iptables save$ sudo ip6tables save
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