Friday, September 28, 2012

What's on your network?

Ever wanted to know what is on your network graphically? There is a program that works on most platforms that support the java gui. Your best chance to document your home network. The program is jNetMap. The java version seems a lot more stable now. You can find it on You can start up the the program very easily from the command line with (if you have java installed):

$ java -jar jNetMap.jar


C:\> java -jar jNetMap.jar

The instructable:
has more information also.

Once you run the software on your network and scan for devices, you can get a roadmap of what is there. What is really neat about it is, you can see what devices are up or down on the network and it makes trouble shooting easier. You can also see rogue devices on the network also that need to be investigated.

You can use the mouse to move all the icons around to make the map more readable. You can even add notes to define where equipment is.  Green lines suggest a good connection. Red and yellow lines indicate problems. In the case of Test_server, it is not even connected to the network, but we include it the map so that we know we have the hardware.

Here is another snapshot after I shut down a few systems.  You almost look like you have a live picture of the network. You can impress your friends of how you do systems administration. Run the program (with permission) over at someone else's place and see what you get.

1 comment:

  1. Hi Geeks,
    Greeting from India.
    I found your post on instructables to read gmail in cli really cool post Thanks a lot..Keeep Geeking