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Thread: Question about firwalls

  1. #1
    Join Date
    Mar 2007
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    Question about firwalls

    I want to take an old computer and turn it into a firewall, not out of nessecity, but more for learning. My question is, is iptables a good firewall to use/experiment with. Or are there other firewalls that are better to use that are more configureable. Thanks for your help in advance.

  2. #2
    Join Date
    Mar 2007
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    Denver, CO
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    Ubuntu 12.04 Precise Pangolin

    Re: Question about firwalls

    iptables is the only firewall built-into the linux kernel. There are a lot of other programs (both GUI and command line) that allow you to alter the iptables indirectly.

    Take a look at this:
    http://wiki.debian.org/Firewalls

  3. #3
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    Mar 2007
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    Re: Question about firwalls

    Thanks, so your saying that i can only use iptables?

  4. #4
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    Sep 2006
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    Solihull/Piraeus (UK/GR)
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    Ubuntu 11.10 Oneiric Ocelot

    Re: Question about firwalls

    Almost all firewall software for Linux is based on iptables (or ipchains) - it is essentially the base software layer for all filtering of network traffic. But because it sits at the lowest level in the stack, the configuration rules can be complex to deal with entirely by hand. There are loads of scripts around to help generate iptables rules and a couple of notable GUI applications:



    There are also some complete Linux/FreeBSD distributions designed specifically a firewall/routing platforms:


  5. #5
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    Re: Question about firwalls

    iptables is part of the kernel. I'm not familiar with another method. I've never heard such a complaint.

  6. #6
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    Nov 2007
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    Xubuntu 14.10 Utopic Unicorn

    Re: Question about firwalls

    Also guarddog. It's a KDE program, but deserver a mention as a notable iptables confiuration GUI.

    Agreed, all the Linux firewall GUIs I know of end up writing iptables scripts. I see nothing wrong with that, and lots of things right with that.

  7. #7
    Join Date
    May 2008
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    Center of England
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    Ubuntu 10.04 Lucid Lynx

    Re: Question about firwalls

    This is a nice gentle introduction to iptables:

    https://help.ubuntu.com/community/IptablesHowTo

    all the best
    vim Java PHP Perl and C a long time ago :/
    ssh_user to ssh in then su to sudo_user. They have to guess 'name' and 'password' X 2 - sudo is good

  8. #8
    Join Date
    Mar 2007
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    212

    Re: Question about firwalls

    Thanks for all the info.

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