Finding Active IP Addresses

Windows

Angry IP Scanner (or simply ipscan) is an open-source and cross-platform network scanner designed to be fast and simple to use. It scans IP addresses and ports as well as has many other features.

It is widely used by network administrators and just curious users around the world, including large and small enterprises, banks, and government agencies.

It runs on Linux, Windows, and Mac OS X, possibly supporting other platforms as well.

The "Legacy" version is simple and easy to use, and does not require an installer.

Any version of IPscan may trip your antivirus program or security features in your browser. You may need take steps to download IPscan.

Linux

While IPscan does have a Linux (and MAC) version there are other alternatives, like Netdiscover.

Netdiscover

Installation

Netdiscover can be installed in Ubuntu from the universe repositories:

sudo apt-get install netdiscover
If you need to add the universe repository:
sudo apt-add-repository universe && sudo apt-get update

Netdiscover Syntax

netdiscover [-i device] [-r range | -p] [-s time] [-n node] [-c count] [-f] [-S]

-i device – The network interface to sniff and inject packets. If no interface is specified, first available will be used.

-r range – Scan a given range instead of auto scan. Valid range values area for example: 192.168.0.0/24, 192.168.0.0/16 or 192.168.0.0/8.

-p – Enable passive mode. In passive mode, netdiscover does not send anything, but does only sniff.

-s time – Sleep given time in milliseconds between each arp request injection. (default 1)

-c count – Number of times to send each arp request. Useful for networks with packet loss, so it will scan given times for each host.

-n node – Last ip octet of the source ip used for scanning. You can change it if the default host is already used. (allowed range: 2 to 253, default 66)

-S – Enable sleep time suppression between each request. If set, netdiscover will sleep after having scanned 255 hosts instead of sleeping after each one.

This mode was used in netdiscover 0.3 beta4 and before. Avoid this option in networks with packet loss, or in wireless networks with low signal level. (also called hardcore mode)

-f – Enable fast mode scan. This will only scan for .1, .100 and .254 on each network. This mode is usefull while searching for ranges being used. After you found such range you can make a specific range scan to find online boxes.

Last modified:: 2016/12/19 12:27