Broadcast messages to everyone on wifi network?

i recently set up an open network for people in the area to log on to,
but I was wondering if there is a way to broadcast a message to
everyone on the network at once? Thanks

On 19 Mar 2007 15:45:13 -0700, (E-Mail Removed) wrote:

>i recently set up an open network for people in the area to log on to,
>but I was wondering if there is a way to broadcast a message to
>everyone on the network at once? Thanks

Since you're too embarassed to mention what operating system you're
using, I'll assume Windoze XP Home. However, your header says that
you're using Safari on a MacIntosh so that won't work. Mac users
invariably announce to the world that they are using the
non-conformist computing platform. Perhaps you're running a dual boot
system and are just trying to confuse everyone. Dunno.

For Windoze Messenger Service use:
Start -> Run -> cmd <enter>
From the command prompt, run:
C:> net send
The syntax of this command is:
NET SEND
{name | * | /DOMAIN[:name] | /USERS} message

To send something to everyone, use:
net send * "Hello World"

I dunno nuttin about OS/X but the underlying BSD Unix mutation should
have the "talk" and "write" commands.

In all cases, the user has the option to disarm these services or
block access to the necessary IP ports, thus making it almost
impossible to bug someone in the manner in which you're attempting.
Also, if your unspecified router has an "AP isolation" or "client
isolation" feature enabled, no client to client traffic can occur.


--
# Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060
# 831-336-2558 (E-Mail Removed)
# http://802.11junk.com (E-Mail Removed)
# http://www.LearnByDestroying.com AE6KS

<(E-Mail Removed)> wrote in message
news:(E-Mail Removed) ps.com...
>i recently set up an open network for people in the area to log on to,
> but I was wondering if there is a way to broadcast a message to
> everyone on the network at once? Thanks

Arbitrarily connecting users with unknow OS's...

In short, you can't "actively" send such a broadcast to everyone.
(Fortunetly.)

Well.. You could, as Jeff said, using net send -- but that would only
effect Windows users that have messenger service running. Messenger service
doesn't run by default in Windows. (I think its not even installed by
default as well.) So, the chance that anyone would even see such a message
is low.

I think your best bet would be to "passively" send a message by configuring
your captive portal (are you using a CP) in such a manner where you can
arbitrarily have all connected users next HTTP request re-directed to a
local file. This, of course, assumes that they are using your pipe for web.
Ask around in the web forums for CP's (i.e., ZoneCD) and I bet someone would
have an answer.

May even be possible to do "actively" using java (?), but there is no
guarantee that would work as they may have java disabled, pop-ups blocked,
etc. Plus, it is quite annoying. I think just a re-direction would be
better because it would ensure everyone would go through it (assuming they
are using web) and it is much "gentler".

Good luck!

On Mon, 19 Mar 2007 16:52:52 -0700, Jeff Liebermann
<(E-Mail Removed)> wrote:

>On 19 Mar 2007 15:45:13 -0700, (E-Mail Removed) wrote:
>
<snip>
>
>Since you're too embarassed to mention what operating system you're
>using, I'll assume Windoze XP Home. However, your header says that
>you're using Safari on a MacIntosh so that won't work. Mac users
>invariably announce to the world that they are using the
>non-conformist computing platform. Perhaps you're running a dual boot
>system and are just trying to confuse everyone. Dunno.
>
>For Windoze Messenger Service use:
> Start -> Run -> cmd <enter>
> From the command prompt, run:
> C:> net send
> The syntax of this command is:
> NET SEND
> {name | * | /DOMAIN[:name] | /USERS} message
>
<snip>

By default, XP SP2 blocks such messages. (just a FYI)

~ i recently set up an open network for people in the area to log on to,
~ but I was wondering if there is a way to broadcast a message to
~ everyone on the network at once? Thanks

Yes, here is a wireless device that will permit you to broadcast a message
to everyone on your 802.11 wireless network at once:

http://www.discounttwo-wayradio.com/...p?kc=THUN1000P

This should work fine for a one or two AP network using normal 2.2dBi
antennas, and would support users running any version of Windows XP as
well as Mac OS X.

Hth,

Aaron

Aaron Leonard <(E-Mail Removed)> hath wroth:

>~ i recently set up an open network for people in the area to log on to,
>~ but I was wondering if there is a way to broadcast a message to
>~ everyone on the network at once? Thanks

>Yes, here is a wireless device that will permit you to broadcast a message
>to everyone on your 802.11 wireless network at once:
>
>http://www.discounttwo-wayradio.com/...p?kc=THUN1000P
>
>This should work fine for a one or two AP network using normal 2.2dBi
>antennas, and would support users running any version of Windows XP as
>well as Mac OS X.

Nice. I presume you know that Cisco supports a similar communications
system for the 2610 router, but others should work:
<http://www.cisco.com/warp/public/788/signalling/e_mpaging.html>
This was originally designed for a last resort backup communications
system when the wired, fiber, wireless, and virtual networks all go
down simultaneously.


--
Jeff Liebermann (E-Mail Removed)
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

Check the link and you'll know.

p.s. Please don't switch posting styles (top vs bottom) in mid-thread
-- it makes the thread confusing and hard to follow. Thanks.

On Thu, 19 Apr 2007 03:40:32 +0100, "Forster Tuncurry"
<(E-Mail Removed)> wrote in <(E-Mail Removed)>:

>So whats the antenna gain got to do with it?

>"Aaron Leonard" <(E-Mail Removed)> wrote in message
>news:(E-Mail Removed).. .
>>~ i recently set up an open network for people in the area to log on to,
>> ~ but I was wondering if there is a way to broadcast a message to
>> ~ everyone on the network at once? Thanks
>>
>> Yes, here is a wireless device that will permit you to broadcast a message
>> to everyone on your 802.11 wireless network at once:
>>
>> http://www.discounttwo-wayradio.com/...p?kc=THUN1000P
>>
>> This should work fine for a one or two AP network using normal 2.2dBi
>> antennas, and would support users running any version of Windows XP as
>> well as Mac OS X.

--
Best regards, FAQ for Wireless Internet: <http://Wireless.wikia.com>
John Navas FAQ for Wi-Fi: <http://wireless.wikia.com/wiki/Wi-Fi>
Wi-Fi How To: <http://wireless.wikia.com/wiki/Wi-Fi_HowTo>
Fixes to Wi-Fi Problems: <http://wireless.wikia.com/wiki/Wi-Fi_Fixes>

So whats the antenna gain got to do with it?

Joe.

"Aaron Leonard" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
>~ i recently set up an open network for people in the area to log on to,
> ~ but I was wondering if there is a way to broadcast a message to
> ~ everyone on the network at once? Thanks
>
> Yes, here is a wireless device that will permit you to broadcast a message
> to everyone on your 802.11 wireless network at once:
>
> http://www.discounttwo-wayradio.com/...p?kc=THUN1000P
>
> This should work fine for a one or two AP network using normal 2.2dBi
> antennas, and would support users running any version of Windows XP as
> well as Mac OS X.
>
> Hth,
>
> Aaron

My god. Where is the ERP laws!


Joe.


"John Navas" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Check the link and you'll know.
>
> p.s. Please don't switch posting styles (top vs bottom) in mid-thread
> -- it makes the thread confusing and hard to follow. Thanks.
>
> On Thu, 19 Apr 2007 03:40:32 +0100, "Forster Tuncurry"
> <(E-Mail Removed)> wrote in <(E-Mail Removed)>:
>
>>So whats the antenna gain got to do with it?
>
>>"Aaron Leonard" <(E-Mail Removed)> wrote in message
>>news:(E-Mail Removed). ..
>>>~ i recently set up an open network for people in the area to log on to,
>>> ~ but I was wondering if there is a way to broadcast a message to
>>> ~ everyone on the network at once? Thanks
>>>
>>> Yes, here is a wireless device that will permit you to broadcast a
>>> message
>>> to everyone on your 802.11 wireless network at once:
>>>
>>> http://www.discounttwo-wayradio.com/...p?kc=THUN1000P
>>>
>>> This should work fine for a one or two AP network using normal 2.2dBi
>>> antennas, and would support users running any version of Windows XP as
>>> well as Mac OS X.
>
> --
> Best regards, FAQ for Wireless Internet: <http://Wireless.wikia.com>
> John Navas FAQ for Wi-Fi: <http://wireless.wikia.com/wiki/Wi-Fi>
> Wi-Fi How To: <http://wireless.wikia.com/wiki/Wi-Fi_HowTo>
> Fixes to Wi-Fi Problems: <http://wireless.wikia.com/wiki/Wi-Fi_Fixes>