Suppose for a moment that we're not familiar with "network magic".

What is it, what does it do?

I agree. I find such posts annoying in the extreme. Many Linux users do NOT
use Windows or any Windows applications. The assumption is that because it
is Windows that we should some how be familiar with it. I have not used
Windows in ten years!

My apologies but as a newbie to Ubuntu I took that for granted. Have a nice
day.

No problem. Just remember that you are in a new operating system and
that users who are able to help you are most likely well established Linux
users and set in our ways. :) Some Linux users have never used Windows at
all which may surprise some people. I have used Windows, but nothing later
than XP and that is but a distant memory. While we may be smart about some
things we are not familiar with everything. Some of us are thin skinned when
it comes to Windows and Windows users who flocking to Linux in droves ( a
good thing), but bringing Windows habits (not a good thing) to the Linux
world.

I know that you did not mean to cause offence. I see many such comments and
they invariably rub me the wrong way which is my problem and not yours.
Don't hesitate to ask for help. Just remember to provide as much information
as possible. In this case, tell us what the applications is. I see that you
have now done this and hope that someone can help you.

I am assuming you want to see if you have wireless freeloaders on your
network? You should be able to see this information using the software
built in to your router. Your router has an IP address just like your other
networked machines, usually 192.168.1.1 or 192.168.0.1, just type that
address into a web browser and you should see some kind of web page asking
for a username and password, or showing you configuration options. The
first thing I would suggest you do is put a strong username/password
combination in place on your router. This way if someone does get access to
your network, they can't start changing your router's configuration to suit
their needs. Once you're into the router's interface (each brand has their
own software), browse around a bit and you should be able to find out who is
connected.

Its an old Linksys and I think I found the problem. I did have someone on
it. The neighborhood kid. He got some software that had the ability to get
the code and he was down the street catching my wireless signal. Needless to
say his parents got a bill from me. TY for your time it is appreciated. Bill

I hope your router supports WPA or WPA2 encryption. I have experimented
with WEP cracking software and it's surprisingly easy. I now use WPA2 with
a random 63 character password. I have had trouble with some characters in
linux though, it seems ", ', /,\,# are interpreted by the underlying shell
code. Someone correct me if I'm wrong, but I have had to use passwords not
containing those characters. If you want to see some software that can do
wireless packet capture and WEP cracking, check out BackTrack4. It's a
security/foresics/penetration testing distribution based on Ubuntu which has
a great collection of packages maintained by their own repositories. As you
would expect from something based on Ubuntu, it's free (as in beer) and open
source. It's a great way to test the security of your network though. Best
of luck...

Network Magic is software from Cisco that can show who is on a network and
information on that machine such as OS, etc. Basically Im trying to figure out
who if anyone has access to my network via Ubuntu.

I must assume that cisco's application uses the computer as a server or
gateway of some sort.

It may also just be communicating with a router for the information that
is there, however this is a guess.

WiFi radar will show all the wifi connections it sees. This in no
way tells you if they are connected to your router only that they are
there. You could turn off the router and see if any of the connections
turn off as well.

Use the non-broadcasted name setting on your router to keep it from
making it self known and use password security such as WEP to foul would
be road warriors from using your connection.

Set up a gateway like Tork in the repository to make your computer a
gateway so you can keep track of traffic.

You might find a running file on the router I have not tried.

I like the second option myself, but you might like the learning curve.
Tell us what you have decided to use as you mark this thread solved.