Application to Detect Intruders in a WiFi network

The main advantage of WiFi network is the ability to connect to the Internet wirelessly, at the same time is also its greatest danger. While we always tries to keep our WiFi network secure by using passwords / keys, there are many users who still have open network or with basic security key which anyone with experience could break to access all data passing through that connection which can be misused. There are a number of ways with one can hack your WiFi password, this includes vulnerabilities in encryption and brute force attacks. As a result, someone can gain unauthorized access to your Internet connection and LAN and exploit them while staying unnoticed. Modern WiFi networks are well protected, but what if someone who gained access might be accessing your mails or personal financial information or might be using your WiFi to do some unethical work.

In addition to changing and improving the security of the router, there is a way to check if someone is connecting and using your WiFi network by using various WiFi Scanner available for various devices you use:

Fing for Android:

Fing performs a quick WiFi scan of all devices that are connected to our wireless network router. We can see the IP and MAC addresses of these devices as well as the assigned-in name if they had any, see for example “Computer Manuel” -. We may also assign specific names for certain equipment, which will help us to differentiate between own devices and intruders that may appear on the network.

Fing - Network Tools

In short, this is a really useful application and recommended for anyone who wants to have their WiFi network constantly monitored without needing to modifying and revising the router configuration.

Download | Fing from Google Play

Nirsoft Wireless Network Watcher for PC

Wireless Network Watcher does the same thing which Fing does for your android Device. It scans your wireless network and displays the list of all computers and devices that are currently connected to your network.

Wireless Network Watche

For every computer or device that is connected to your network, the following information is displayed: IP address, MAC address, the company that manufactured the network card, and optionally the computer name. You can also export the connected devices list into html/xml/csv/text file, or copy the list to the clipboard and then paste into Excel or other spreadsheet application. supports windows 7 and windows 8.

SoftPerfect Wifi Guard for PC

SoftPerfect Wifi Guard is a simple tool which makes it easy to detect intruders on your local WiFi network. The program requires very small space for installation, on the first run it will will quickly scan your network and display any devices it finds. Anything that’s clearly a part of the infrastructure, like the PC you’re working on or your router will be flagged as green, but everything else will be marked as red: a potential intruder as shown below.

SoftPerfect_WiFi_Guard

This software is available for Windows, Linux and for Mac OS too. Windows 2000 or above, Mac OS 10.5 on Intel or higher, Linux with GTK+ 2.8 or higher, and supports both 32-bit and 64-bit hardware.

Scany – network scanner for iPhone

Scany does the same thing which above all utilities does, including finding connected devices, looking up detailed device information, network troubleshooting, scanning ports, testing network security and firewalls. The best thing about is that it finds hidden networking devices on a WiFi or a LAN, owners who want to hide their presence for various reasons, for example, behind a firewall. Check if someone is using your WiFi, office or home network without your permission and catch the intruder!

Scany - network scanner

Hope these list of softwares will help you in detecting the WiFi intruders and will help you in securing your Wifi network by finding vulnerabilities in your network. I will try to cover how to secure your WiFi network in my coming post.

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