iptables chain rule specifation

friends,

In one of the script i observerd following line.

Code:

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$iptables -A inwan_level_input_filter -p icmp -j logInboundPermitted

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do these "inwan_level_input_filter" and "logInboundPermitted" can be a group of chain rules or any label .

If it is a group of chain rules , how can it be created.


thanks

The group of rules is called a chain, and they can be created with the -N option.