On Wed, Oct 25, 2000, Yves Lafon wrote:
> The wireless box is doing dhcp for the wireless machines and is acting
> like a router, ie: not doing masquerading
> (yes I will document that ;) )

Interesting. However, you need a set of IPs in order to do that plus an
upstream router willing to listen to your wireless routing laptop,
right?

[..]
> One other pb, when the wireless card goes in sleep mode, it wakes up with
> the right settings except one... the channel :/

You can force the PCMCIA cards to be ejected/reinserted when the laptop
is suspended using /etc/pcmcia/apm.options (or something similar).

--
Hugo Haas <[email protected]> - http://larve.net/people/hugo/
Ok children, today we're going to learn about a Japanese poem called
haiku. A haiku is just like an American poem, except that it doesn't
rhyme and it's totally stupid. -- Mr Garrisson

On Fri, Oct 27, 2000, Yves Lafon wrote:
> For the ones who have peripherals and wants to have some machines sharing
> wires, here is a small description of my settings, the page is still raw
> but you'll get the idea ;)
>
> http://www.raubacapeu.net/people/yves/2000/10/26-network

In this document, you mention reading the Stronger IP Firewall (IPFWADM)
Rulesets[1] of the Linux IP Masquerade HOWTO.

If you have a Debian box, the ipmasq package is paranoid for you. :-)
It probably implements those particular rules (I'll check that if I am
bored).

 1. http://www.e-infomax.com/ipmasq/howto/ipmasq-HOWTO-1.90c-6.html#ss6.4

--
Hugo Haas <[email protected]> - http://larve.net/people/hugo/
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about gay cowboys eating pudding. -- Eric Cartman

* Gerald Oskoboiny <[email protected]> [2001-07-20 02:25-0400]
> I am using a 5-year-old Compaq Armada laptop as the base station,
> (built from parts of other old ones by Hugo, I think there are
> pictures of that operation somewhere.) Its hostname is ralph-wiggum,
> because it's so feeble.

For the record, here are the pictures:

http://larve.net/people/hugo/pictures/2000/03/laptop

Talking about wireless network, I actually did some coverage tests at
my (future) new place, and it works really well, even in large houses,
and it covers apparently quite some space outside the building.

Someone (whose name will be kept secret) used some cool Windows
software in the Somerville/Cambridge area the other day and discovered
lots of (unsecured) wireless networks. It is a program which checks
for base stations, displays all the characteristics if it finds one,
and can even be hooked with a GPS to put that on a map and have
worldwide free wireless connection by stealing packets from others.

--
Hugo Haas <[email protected]> - http://larve.net/people/hugo/
Hey, did you hear that? Sounds like a giraffe is dying over there.

Alternative instructions for doing it from a Mac:

Turn on the airport (wireless card) and open the control panel (in OS X you
can have its status on teh menu bar or dock if you like, and do everything
from there).

In OS 9 select "software base station" and then start the base station (you
can change the network name/channel by editing the boxes).

In OS X select "Create network".

and away you go....

On Thu, 15 Nov 2001, Ian B. Jacobs wrote:

 Hugo Haas wrote:
 >
 > I have installed a wireless network at home. I have a laptop which is
 > connected to my cable modem and which does masquerading.
 [snip]
 > If people want to do the same, I described the system at:
 >
 >            http://larve.net/people/hugo/2000/10/wireless-lan

 Hi Hugo,

 Gerald and I were at the QA meeting earlier this week,
 and tried to set up a wireless network following your
 instructions. We had only limited success. Gerald should
 be able to fill in more of the details than I, but here
 is what I recall:

  - Gerald and I were able to have our Linux machines talk
    to each other, and we used iptables to do masquerading
    (Linux kernel 2.4.5; I had to recompile to have the
     proper support).  The iptables command we used was:

        iptables -t nat -A POSTROUTING -o ppp0 -j MASQUERADE

    You might want to add iptables to your page since apparently ipchains
    is now deprecated.

  - We had little luck with getting dhcpd to work on my
    machine. It was very flaky - it seemed to work once (i.e.,
    Gerald got an IP address) but after that, we only had
    success with static IPs. Here's my /etc/dhcpd.conf:

     subnet 192.168.1.0 netmask 255.255.255.0 {
        range 192.168.1.2 192.168.1.20;
        option routers 192.168.1.1;
        option domain-name-servers 18.29.0.200;
        option domain-name "localhost";
        option subnet-mask 255.255.255.0;
        default-lease-time 600;
        max-lease-time 7200;
        }

  - The other machines around the table were a Mac (Karl) and two Windows
    machines. Try as we might, we could not get those machines to join
 our
    network. However, they seemed to recognize each other (i.e., detect
    other cards, but no luck with IP addresses, etc.).

  - We weren't clear on the significance of the ESSID and CHANNEL
 parameters
    of the wireless interfaces. In the end, the config that seemed to
 work was
    when the value of ESSID was "any" (and not, for example, "Chaos").
 There
    was some question about whether ad-hoc mode was appropriate with the
    Windows and Mac systems. All of this part of the configuration
 escapes
    me.

 So, while we had minor successes, it was on the whole a frustrating
 experience. Gerald and I had a little IRC chat going locally, but we
 couldn't get everyone connected. Which may have been a good thing as
 (1) it would have been a distraction from the meeting and (2) I would
 have had less bandwidth for myself over the 56k line. :)

  - Ian



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