lanmap - Network discovery tool that produces nice 2d images
Posted by admin on February 2nd, 2008 
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This information is then put into a nice human-readable 2d image (various formats are available) which can be used to understand a network’s topology.
Install lanmap in Ubuntu
sudo aptitude install lanmap
This will complete the installation
Using lanmap
lanmap syntax
lanmap [-o directory] [-e program] [-T {png,gif,svg}] [-f filtetr] [-D {#,all,raw}] [-r seconds]
[-i {?,*wildcard*,iface}] [-h] [-v] [-V]
lanmap example
lanmap -i eth0 -r 30 -T png -o /tmp/
This will create a lanmap.png file under tmp folder
You can see the same screen here
lanmap available options
-o directory - The directory in which to save the generated images. Default is the current directory.
-e program - The program to use to generate images. Default is twopi.
-T {png,gif,svg} - Output image format. Default is png.
-f filter - Traffic filter, in libpcap syntax.
-D {#,all,raw} - Debug mode; lots of output, use with caution. #: payload bytes to dump (default: 0)
-r seconds - Set the time interval between 2 consecutive graph generations. Default is 60 seconds.
-i {?,*wildcard*,iface} - Interface to use: ?: list all devices and exit *3Com*: use the first NIC with
“3Com” in it
-V - Version info.
-vv - Verbose mode, up to 3 levels (-vv, -vv09:21 29/11/2007v).
-h - Help message.
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February 2nd, 2008 at 5:23 pm
I don’t know if it is the same way in Debian, but in Ubuntu you most likely have to sudo the command for it to work.
February 2nd, 2008 at 7:04 pm
My ubuntu need sudo to run it
February 3rd, 2008 at 12:26 am
ein lanmap-network-discovery-tool was auch noch schicke Bilder produziert…
Ich glaube das werde ich mal auf meinem Eee installieren, da ich ja den “kleinen” an vielen Unterschiedlichen Netzwerken benutzen werde. http://www.ubuntugeek.com/lanmap-network-discovery-tool-that-produces-nice-2d-images.html …
March 27th, 2008 at 8:49 pm
Not sure what I’m doing wrong but when I run lammap, I receive the following output after 30 seconds of monitoring.
kidfry@XPS420_Linux:~$ sudo lanmap -i eth0 -r 30 -T png -o /tmp/
protocols.c:3090: ASSERTION FAILED: isalpha((unsigned char)node->data.nb_dgm.src_name[0]) && isalpha((unsigned char)node->data.nb_dgm.dest_name[0])
0000 00 00 11 00 00 00 65 74 68 30 00 00 00 00 00 00 ……et h0……
0010 00 00 11 00 00 00 01 00 00 00 8F 00 00 00 00 00 …….. ……..
0020 00 00 09 00 01 00 00 00 FF FF FF FF FF FF 00 50 …….. …….P
0030 8D F7 58 73 08 00 45 00 00 ED 2E 45 00 00 80 11 ..Xs..E. …E….
0040 89 07 C0 A8 00 64 C0 A8 00 FF 00 8A 00 8A 00 D9 …..d.. ……..
0050 A5 5E .^
currpos: 82
Any ideas on what this means? I’ll see what I can locate on the forums as well.
Thank you,