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ball
Wireless Networking Mark Unseen   Dec 15 00:43 UTC 2006

An item for the discussion of wireless networking with unix
and Linux systems.  This can be wireless LANs (e.g. "hot
spots"), MANs and WANs (whether private or public).  Ham
Packet and APRS are on-topic, although there are already
items for that in the Ham Radio conference.
122 responses total.
keesan
response 1 of 122: Mark Unseen   Dec 15 01:02 UTC 2006

Why is this in a systems conference if it is not about programming or
operating systems?  Is this now the linux conference too?
gull
response 2 of 122: Mark Unseen   Dec 15 01:05 UTC 2006

If you're going to use a wireless bridge, make sure the bridge and the 
access point are from the same manufacturer.  This is sort of a 
nonstandard use of wireless networking, and interoperability between 
different brands sucks.
ball
response 3 of 122: Mark Unseen   Dec 15 01:15 UTC 2006

Re #1: I thought about putting it in Micros, but not every
  wireless network client is a computer.  This conference
  seems to have three or four different names, but one of
  them (as shown by Backtalk) is Jellyware, which was a unix
  conference in its previous incarnation.  Linux is close
  enough to be on-topic.

Re #2: I think I've seen a wireless bridge from D-Link. I'll
  see what I can find.  Thanks for the tip.
keesan
response 4 of 122: Mark Unseen   Dec 15 02:12 UTC 2006

How do I determine the IP number of a router so I can ping it for practice
to see whether I have set up a wireless network?  My other options are to add
a second drive to a Windows desktop for ext2 linux (can't repartition the
first drive because it has EZ-DRIVE on it), or bring over the 486 laptop and
plug in an external keyboard and put the pcmcia modules on it and try to ping
between two laptops.
cross
response 5 of 122: Mark Unseen   Dec 15 02:40 UTC 2006

Regarding #31; Read item #1 for an introduction to what this conference
is.
mcnally
response 6 of 122: Mark Unseen   Dec 15 03:14 UTC 2006

 I can't wait to find out what's in response #31.

 Usually I'm the one making that error..
cross
response 7 of 122: Mark Unseen   Dec 15 03:21 UTC 2006

Haha.  I guess I lifted my pinky off the shift key before taking my middle
finger off the 3 key but not before the OS decided I wanted to repeat the
3....  :-)
rcurl
response 8 of 122: Mark Unseen   Dec 15 03:31 UTC 2006

Re #2: my  wireless bridge is not made by Apple but it works with an Apple
Base Station. That's because it was designed to do so, since Apple doesn't
make such a bridge. 
ball
response 9 of 122: Mark Unseen   Dec 15 03:34 UTC 2006

What kind is it? I can't find an 802.11g bridge from D-link,
to work with my DI-524 wireless router.
rcurl
response 10 of 122: Mark Unseen   Dec 15 03:44 UTC 2006

It is a MacWireless.com 11g Ethernet Adapter (Bridge). The one I have 
doesn't implement WPA, only WEP, but their new model has WPA.
ball
response 11 of 122: Mark Unseen   Dec 15 03:47 UTC 2006

Thanks!
krokus
response 12 of 122: Mark Unseen   Dec 15 05:06 UTC 2006

re 4 (router IP addy question)
The only way to know is to know the topography of the network.  (IE
the admin would have to tell you.)

I would suggest getting a packet sniffing software, and see when you
start seeing packets coming across the network.  But I'm guessing you
won't be able to access the library's system, as I'm sure it's not an
open system for public access.  (IE, you can't take your laptop in,
and use it on their network.)

If their system were setup for public access, it would be broadcasting
its' SSID, and you would be able to find it for easy connection
establishment.
gull
response 13 of 122: Mark Unseen   Dec 15 05:16 UTC 2006

I was thinking they had a public system, but it's been a while since I 
was there.
nharmon
response 14 of 122: Mark Unseen   Dec 15 14:49 UTC 2006

> How do I determine the IP number of a router so I can ping it for 
> practice to see whether I have set up a wireless network?

Use the traceroute utility to find a router that is a few hops away. Or
you can just use your default gateway.
maus
response 15 of 122: Mark Unseen   Dec 15 15:00 UTC 2006

The previous poster meant the first-hop router, I believe. Presuming
that the router is also the access point, you could watch for beacon
packets (I may have the name incorrect) that advertise the SSID and IP
number of the device. I presume that this means that there is not a DHCP
server available. 
nharmon
response 16 of 122: Mark Unseen   Dec 15 15:56 UTC 2006

Netstumbler is a good utility for that.
keesan
response 17 of 122: Mark Unseen   Dec 15 21:23 UTC 2006

The public library has a public wireless system.  They give you a key. 
Windows computers can figure out their IP address, I can't do that in linux.
I was unable to compile a sniffer program that was said to work in Redhat 6.1
by typing 'make' as instructed, with all the required libraries.  The driver
for my card does not do what it is supposed to do but there is an improved
version which I do not know how to compiler that gives you the NIC addresses
(not IP) of all available networks in range,  I figured out the default
address of a Cisco 340 router by looking it up online, and was also able to
sort of communicate with it over a 9-pin serial cable, but it wanted a
username and password.  It gave me an fec0 IP address.  The default IP address
for it is 10.0.0.1, and I will try plugging it in and pinging it from my linux
laptop.  Cisco has downloadable software but only if you have a contract or
are registered, and only for Win9X-XP.

What I could do is find someone using their Windows laptop at the library and
try to get the IP address that way if the people at the desk do not know it,
or email for help ahead of time.  Then use iwconfig to set the key and route
add default gw IP-address of library public network.  

The Cisco router has a serial port for communicating via the computer comport,
and also RJ-45 to hook up to a wired network to run Windows software to change
settings, and probably also to share signals between wired and wireless
network but that would require another IP address, I think.

We have a print server with no antennas, but a pcmcia slot and card, and three
ethernet ports labelled internet, PC, and HUB.   And a Wireless-B thing with
two antennas and four places to plug into wired computers plus it connects
with wireless cards (and comes with one).  Can't find the default IP address
for it online, probably insists on using Windows (and this program breaks
Windows when uninstalled and leaves itself behind in My Documents).  

I will try to ping Cisco from the linux laptop via wireless.
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