Thread: Question about Linux Firewall

  1. #1
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    Question about Linux Firewall

    In windows, a typical firewall program may contain a driver to deal with the datagram processing. What about in Linux? Does it also need to write a Linux driver?

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    Obsessed with C chrismiceli's Avatar
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    The linux firewall can only be installed via a kernel module or as part of the kernel itself. Look here for info on it, it is called ipchains: http://www.tldp.org/HOWTO/IPCHAINS-HOWTO.html
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    Where can get some free implementation information about VPN?

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    Comment your source code! Lynux-Penguin's Avatar
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    Perhapse GOOGLE might help
    search for "Linux VPN" or something

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    Cat without Hat CornedBee's Avatar
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    ipchains has been superseded by iptables as of the 2.4 kernel.
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  6. #6
    Obsessed with C chrismiceli's Avatar
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    Quote Originally Posted by CornedBee
    ipchains has been superseded by iptables as of the 2.4 kernel.
    I KNEW THAT, I am going to slap myself, I looked up the link to the wrong one! Thanks for pointing it out.
    The right link:
    http://www.netfilter.org/
    Thanks CornedBee.
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    you can also program your own firewall application using netfilter hooks. it comes in handy if you want to implement an own analyzing/detection system. i think there was some phrack issue with an article about that. if not, use google.

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