On Mar 21, 2005, at 6:42 PM, Steve Fuller wrote:
You might want to look at something like snort or Ethereal for monitoring your network for starters. Both will need to be compiled for OS X, and will require X windows to be installed to use their front ends. They are not easy to pick up on by any stretch of the imagination.
Another idea would be to install something like nmap (another command line program) on your powerbook. You can use some of it's commands to locate all hosts on your network. For example:
nmap -sP 192.168.0.1/24 will ping all 254 addresses on the 192.168.1 network (a common network configured internally for people that are using NAT internet gateways and the like). It will return a list of all of the active IP addresses that it finds.
All three of the previously mentioned apps are open source. You will more than likely need to have the developer tools installed to make them work. A background in networking will help with deciphering the output of Ethereral and snort.
It's important to note, that even though you may not have any applications open on your Mac that you will probably see some network activity on your network (even when you are not logged in). This could be background processes running on the machines on your network, or other miscellaneous network traffic. Activity lights that light up just when they see activity on a certain interface are not necessarily an indication of any heinous activity occurring on your network. (Although it never hurts to check).
Very interesting, thank you. I had no idea that nobody has designed a simple program that can do this. I guess not enough people see the advantage of being able to boot an app. that will allow them to see other computers on their network just as easily as some programs detect other wi-fi networks. . .like MacStumbler. I'm going to be spending the next few weeks on the phone with some of my more "geeky" friends and see if we can design a program for this purpose. Who knows, maybe I'll be a millionaire by next year! (One can dream. . .)
Z
THE BLUETOOTH (and WiFi) MASTER
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