Netenum

Netenum comes as part of the IRPas suite of tools.  It is a very basic ping sweeper and enumeration tool that can give a tester a very quick list of hosts that are up that he an used as a target list for other tools i.e. Nessus, nmap etc.

It is available from here.

Installation:

Download

Create a directory for irpas and place the .tar.gz file inside

tar -zxvf irpas_0.9.tar.gz

make

Note: - By default all files bar the libpcap directory in the tar ball extracts to the directory you run the extraction from, hence the need to place in a directory to start with.

Execution:

 netenum <destination> [timout] [verbosity]

destination can be in the following formats:
dotted IP address: 192.168.1.1
IP and Netmask: 192.168.1.1/255.255.255.0
IP and CIDR notation: 192.168.1.1/24
Name: www.vulnerabilityassessment.co.uk

timeout applies for the whole operation! verbosity is between 0 (quiet) to 3 (verbose)

Example output:

[root@hacker irpas]# ./netenum 192.168.0.0/24 5
192.168.0.11
192.168.0.12
192.168.0.13
192.168.0.15
192.168.0.17
192.168.0.18
192.168.0.67
192.168.0.105
192.168.0.118
192.168.0.119
192.168.0.231
 

Obviously you can direct the output to a text file i.e. ./netenum 192.168.0.0/24 5 > target.txt