Re: Going small

From: Nikolas Britton (freebsd_at_nbritton.org)
Date: 04/15/04

  • Next message: Arek Czereszewski: "Natd + 2 public IP and 1 alias" 
    Date: Wed, 14 Apr 2004 19:51:51 -0500
To: jfm@blueyonder.co.uk, freebsd-newbies@freebsd.org

    John Murphy wrote:

    >Nikolas Britton <freebsd@nbritton.org> wrote:
    >
    >
    >
    >>m0n0wall will run from a HD aswell as a CD-ROM/Floppy
    >>
    >>
    >
    >Sure, but I'll be happier with the (becoming more) familiar full
    >FreeBSD and may even try current :|
    >The php/XML speak was foreign to me too.
    >
    I think your missing the whole point about m0n0wall...

    I guess maybe it's one of those things you have to try before you
    understand it. In the period of time I have been using it (1 year) I
    have spent a total of about 1 hour to setup AND maintain this box. The
    box is entirely managed through a web based interface
    (http://www.m0n0.ch/wall/screenshots.php), the only time you use the
    console is to setup the network cards at first boot (the box I have
    m0n0wall on has no monitor, keyboard, mouse, or serial console setup).

    Conbine the following:
    Consumer based Cable/DSL/Wireless Router (Easy of use, "appliance")
    Cisco Gateway/Firewall/VPN/Router/etc (Powerfull/Advanced)
    BSD (Rock solid and flexible)
    and you get m0n0wall in return.

    Invest $20 on a 32MB CF Card
    (http://www.pricewatch.com/1/226/1601-1.htm) (or use that notebook
    harddrive) and give m0n0wall a try, you wont be disappointed.

    My m0n0wall setup btw: Box: (P166/48MB Ram/1GB Hdd/4 NICs) Network
    Interfaces: (WLAN/LAN/DMZ/WAN) = (802.11b, Linksys WAP11 w/Parabolic
    Reflectors*/100BaseTX/100BaseTX/900Mhz NLOS Wireless T1)

    *Ez-12 Parabolic Reflector template from http://www.freeantennas.com/
    Linksys WAP11: 18 dBm TX, -84 dBm RX (1mb), -75 dBm RX (11mb) + Ez-12
    (12dBi Gain) = theoretical Max EIRP: 1400~ milliWatt (30dBm), witch
    translates into about 300m LOS, I used overhead transparency film, heavy
    duty aluminum foil, and toothpicks to build mine (Elmers spray adhesive
    to bond aluminum foil to the transparency film) total cost $3 for the
    toothpicks and aluminum foil, this is one of the only ways you can mod
    your radio hardware (because your not modding the hardware, it's a loop
    hope) and still be legal (EIRP and modding wise) with the FCC. The EIRP
    (Effective Isotopic Radiated Power) max for unlicensed use is 4000~
    milliWatt (35dBm) btw. Every 3dB of gain you double the power, so lets
    say your that ahole down the street with the 36 dBi Gain modded sat dish
    connected to a normal everyday AP with about 17dBm Gain, add those two
    together and you get 53 dBm, so my gonads are exposed to the EIRP of 260
    Watts of microwave energy every time I walk passed it.

    The formula for calculating free space path loss:
    L = 20 log(d) + 20 log(f) + 36.6
    (where L=loss in db, d=distance in miles, f=freq in Mhz)

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