old computer as firewall

Posted on 2007-07-30
Last Modified: 2013-11-16
I heard that it is possible to use an old computer as a physical firewall. How is that done? thanks
Question by:zachvaldez
    LVL 18

    Accepted Solution

    A great start is to search w for firewalls.

    There are quite a few CD ISO distributions that can be easily installed from the CD to a hard drive, run from the CD ROM and etc.

    Some of the more popular are:

    You'll need two network interface cards. All the distros are free OPenSOurce and have good documentation and great user forums for help.

    Hope this got you started!

    LVL 19

    Assisted Solution

    I'll add a couple more options:

    m0n0wall ( - Embedded software firewall package based on FreeBSD
    pfSense ( - Based on m0n0wall, but uses OpenBSD's pf as for it's firewall functions, and adds feature rich routing functionality, my personal favorite

    All of the ones mentioned are hard drive -based, but there are also live-CD based ones that don't require a hard drive installation (nor a hard drive at all), such as Devil-Linux ( There are also commercial options, such as Astaro ( and ClarkConnect (

    Author Comment

    thanks for the resources!

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