On May 28, 2008, at 11:26 AM, Chris Heiner wrote:

Version 4.5, there all fairly new.

In 4.5, ipchains is no longer used; iptables is used instead.

The changes you make (using the iptables command) are made in the kernel's memory. To save the changes to /etc/sysconfig/iptables, use the "service iptables save" command. When the system is booted (and the iptables service is enabled) it will read that file back into the kernel's memory.

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