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@ -88,7 +88,7 @@ iptables is the user utility which allows you to work with these chains/rules.
.Understanding how iptables works
[NOTE]
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The key to understanding how iptables works is http://docs.swarmlab.io/lab/sec/tables_traverse.jpg[this chart].
The key to understanding how iptables works is image::ROOT:tables_traverse.jpg[this chart].
The lowercase word on top is the **table** and the upper case word below is the **chain**.