[CentOS] iptables default configuration

[Kai Schaetzl]

Carlos Santana wrote on Mon, 18 Jan 2010 17:54:51 -0600:

> - The wiki page approach is to flush existing rules and then add
> required rules to iptables. Is it possible to add/append required
> rules without flushing existing set of rules

You can add rules on-the-fly at runtime and then use service iptables save 
to save them. This will be automatically loaded on a service iptables 
start. But it's harder to maintain as a script of your own. I prefer to 
write a script, run it (which includes flushing etc.) and when it's ok I 
save that result.

Kai

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