Alternative to NetScanner

Is there a software alternative to NetScanner (which runs on the Windows platform)?

You can try nmap, it's console based, but you can install nmapsi4 which is a very easy to use gui.

sudo apt-get install nmapsi4

This will install both packages.

You can try zenmap, which is the graphical interface to the command-line nmap.

sudo apt-get install zenmap

It's pretty easy to use. It won't do mapped drive mounting though, although it's got other very useful features like OS detection and non-ping based scans.

As mentioned, nmap is probably the way to go.
The front-ends I know about are zenmap , umit , nmapsi4 , and knmap .

Sectools.org has some lists of other software that might be of interest (for various platforms, but of course including Linux).

There are also some more specialized scanning tools in the Ubuntu repositories, such as doscan, pnscan, and hping3 .

nmap is probably the most widely used, though.

AngryIP is a good scanner. It's primarily used through the gui, but has cli options too:

jake@daedalus:/$ ipscan --help
Unknown option: -

Pass the following arguments:
[options] <feeder> <exporter>

Where <feeder> is one of:
-f:range <Start IP> <End IP>
-f:random <Base IP> <IP Mask> <Count>
-f:file <File>

<exporter> is one of:
-o filename.txt         Text file (txt)
-o filename.csv         Comma-separated file (csv)
-o filename.xml         XML file (xml)
-o filename.lst         IP:Port list (lst)

And possible [options] are (grouping allowed):
-s      start scanning automatically
-q      quit after exporting the results
-a      append to the file, do not overwrite