Grex Jellyware Conference

Item 65: Wireless Networking

Entered by ball on Fri Dec 15 00:43:35 2006:

1 new of 122 responses total.

#17 of 122 by keesan on Fri Dec 15 21:23:03 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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