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In many cases the radios are spread spectrum which means that they are
broadcasting on many freqs, this makes it harder (but not impossible) to
listen in on what is being said.
David Lang
On Mon, 21 Jun 1999, Randall, Mark wrote:
> Date: Mon, 21 Jun 1999 16:13:50 -0700
> From: "Randall, Mark" <[EMAIL PROTECTED]>
> To: "'[EMAIL PROTECTED]'" <[EMAIL PROTECTED]>
> Subject: RE: Firewall??!!
>
> 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$
>
> -
> [To unsubscribe, send mail to [EMAIL PROTECTED] with
> "unsubscribe firewalls" in the body of the message.]
>
"If users are made to understand that the system administrator's job is to
make computers run, and not to make them happy, they can, in fact, be made
happy most of the time. If users are allowed to believe that the system
administrator's job is to make them happy, they can, in fact, never be made
happy."
- -Paul Evans (as quoted by Barb Dijker in "Managing Support Staff", LISA '97)
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