Mastering IPTables, Part I

June 2nd, 2008 | by networkrouter |
linuxjournalonline asked:


Linux Journal Presents: Linux comes with a powerful firewall built-in, although the interface can be a little intimidating. This is the first in a multi-part tutorial on how to master basic and not-so-basic IPTables functionality and create the perfect firewall for your home network.

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  1. 6 Responses to “Mastering IPTables, Part I”

  2. By patcito on Jun 5, 2008 | Reply

    If someone would have access to my machine and be able to change the path of iptables which would mean that the intruder probably has root access to my machine, I think that would mean I’m already screwed and the intruder can do whatever he wants. An absolute path wouldn’t help at all.

  3. By pdwalker on Jun 5, 2008 | Reply

    That would be a potential security hole, especially if someone is able to manipulate the system path and place another “iptables” executable somewhere else on your system that gets run instead. You always explicitly declare your paths for maximum safety.

  4. By patcito on Jun 6, 2008 | Reply

    why don’t you just do IPTABLES=`which iptables` instead of using whereis? This way is more portable too.

  5. By ikemkrueger on Jun 6, 2008 | Reply

    yepp, vi’s colorsheme is to dark. the blue letters is as good as not, the pink ones really hard to see.

  6. By axel1973w on Jun 9, 2008 | Reply

    VERY VERY NICE!! I LOVE VIDEO TUTORIALS!! GREAT WORK! want more :)

  7. By patriot1369 on Jun 11, 2008 | Reply

    nice tutorial , would be even better if i could see all the letters

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