I've been curious about wireless LANs myself for some time. The HomeBase
near my house uses some sort of wireless LAN. I don't know what, but the
POS machines and any computer stations I see have this little antenna
connecting to what looks similar to a BNC connector.
I've been curious as to their transmission range and whether or not it would
be possible to sniff the traffic. Knowing the frequency, one could
certainly "hear" the transmissions, but what other mechanisms might be
present to prevent a customer with a laptop "connecting" to their LAN?
Anybody have any info on these kinds of nets?
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Sunday, June 20, 1999 5:42 AM
To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
Subject: Firewall??!!
Ok guys/gals... now after all the nice hot-air discussions about NT vs
Uniks...
... can anybody tell me how I could protect a wireless LAN? *G*
That's serious... we're looking into buying one of those wireless devices
which
will handle somewhere between 2 and 10 Mbps (best case though)... to connect
a
couple of remote offices.
As far as I see I'm pretty cleartext through the air... and anybody with the
right equipment could sniff the hell out of my traffic...
So I guess something like this would be most sensible:
One of my sites(main master site):
[Main] [Encryp-] [ Fire ] [ Wire-]
[ ]---[ tion ]---[ ]---[ less ]- - - T H I S - I S - A I R -
[Site] [ box ] [ wall ] [device]
[ WLAN ] [ Fire ] [Encryp-] [Customer]
A I R - [ ]---[ ]---[ tion ]---[ ]
[Device] [ wall ] [ box ] [ Site ]
Well... hope it doesn't wrapp!!! ;-)
Isn't that a bit too complicated? I mean it's great to have a free 2 - 10 Mb
link to the customers (you pay somewhere around 14'000 sFr [1] monthly for a
2
Mb link to the net) but having 3to4 boxes on every site is really not too
cool.
Can anybody suggest any good Wireless LAN manufacturer? Any suggestions to
the
scenario (yeah I know that most firewalls can encrypt traffic... this scheme
is
just schmematic *G*). I had a look at Lucent... however... they didn't had
much
pictures ;-)))
Cheers
Boris Pavalec [QPB]
Network / System Engineer [MCSE]
Highend Computing Systems
Switzerland - Zuerich
http://www.nt-admin.net
[EMAIL PROTECTED]
[1] Which is about 12'000$
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