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README  view on Meta::CPAN

       > iptables-filter-overview.dot
     $ dot -Tpdf iptables-filter-overview.dot -o iptables-filter-overview.pdf

    Although it is possible to make a detailed graph of an iptables
    configuration containing all rules, I wouldn't recommend this in most
    cases.

    In those configurations, where you would need the graph to comprehend
    the rules, the resulting graph would be a mess.

    When the graph looks neat and is legible on A4 paper, you would probably
    understand the configuration without it. But it could be handy to
    explain the rules to someone else, following them with a pencil or your
    finger.

    You would do this to get a detailed graph:

     $ sudo iptables-save \
       | iptables2dot -edgelabel -table filter \
       > iptables-filter.dot
     $ dot -Tpdf iptables-filter.dot -o iptables-filter.pdf

bin/iptables2dot  view on Meta::CPAN

   | iptables2dot -noshowrules -table filter \
   > iptables-filter-overview.dot
 $ dot -Tpdf iptables-filter-overview.dot -o iptables-filter-overview.pdf

Although it is possible to make a detailed graph of an iptables
configuration containing all rules, I wouldn't recommend this in most cases.

In those configurations, where you would need the graph to comprehend the
rules, the resulting graph would be a mess.

When the graph looks neat and is legible on A4 paper, you would probably
understand the configuration without it. 
But it could be handy to explain the rules to someone else, following
them with a pencil or your finger.

You would do this to get a detailed graph:

 $ sudo iptables-save \
   | iptables2dot -edgelabel -table filter \
   > iptables-filter.dot
 $ dot -Tpdf iptables-filter.dot -o iptables-filter.pdf