Dark background and light text firefox add-ons good for night mode

If you surf the internet using Firefox web browser at night, you will find the white background and dark text too bright for the eyes. To change the background to black and light text, use the Dark Background and Light Text 0.5.5 add-on in Firefox. Add-on is available in Firefox and it's source code at … Continue reading Dark background and light text firefox add-ons good for night mode

How to add a Guest Wireless Network with Isolation in OpenWRT on a wireless router

Problem Statement Several guests come home and ask for Wi-Fi access to connect to the internet to see emails, etc. Most times, we give them our main SSID wireless password everytime to connect. This has several disadvantages, though not limited to those listed below: The guest now has a permanent record of your Wireless SSID … Continue reading How to add a Guest Wireless Network with Isolation in OpenWRT on a wireless router

How to calculate MD5 or SHA256 sums in Linux and Android

Many of us use Linux Distributions like Ubuntu, Fedora, available for free on the Internet. To install these distributions on our computers, we need to down their ISO files. Recently, the Linux Mint ISO was hacked and malware inserted into some of it's files. It was then repacked and put up on an external website. … Continue reading How to calculate MD5 or SHA256 sums in Linux and Android

How to set up an isolated Guest WLAN on TP-Link WDR4300 with OpenWRT using command line

You have guests at your home and they want to use your wireless network to retrieve emails, etc off the Internet. This is not a unique situation, but is quite common everywhere, with the proliferation of devices and services that require Internet access. The only issue you face is that if you give them your … Continue reading How to set up an isolated Guest WLAN on TP-Link WDR4300 with OpenWRT using command line

How to obtain WLAN traffic statistics using Gkrellm

How to obtain WLAN traffic statistics using Gkrellm Gkrellm is a powerful system monitor utility on Linux systems. If you need to obtain CPU temperatures, disk I/O, network traffic incoming and outgoing statistics (daily, weekly or monthly), then this is the right choice. To gather a sizeable amount of WLAN traffic count, you need to … Continue reading How to obtain WLAN traffic statistics using Gkrellm

Best free cloud storage service for data with Linux support

If you want good storage with great synchronization support for Linux, you can try any of the following cloud storage services for your data:Dropbox (2 GB free)Copy.com (15 GB free) - Now defunctmega.co.nz (50 GB free)SpiderOak (2 GB free)The above 3 are very popular and have Linux Synchronization clients that make it easy to synchronize … Continue reading Best free cloud storage service for data with Linux support

How to watch the internet connections established by devices on OpenWRT router real-time with iftop

We all want to know to which internet connections our devices connect to. One of the best ways to do that, is use iftop. Install the iftop package in OpenWRT on the router itself to enable it to be used to monitor these network connections. To do so, open a terminal window on your computer … Continue reading How to watch the internet connections established by devices on OpenWRT router real-time with iftop

How to install OpenWRT on the TP-Link WDR-4300 router

Download the OpenWRT Breaking Barrier firmware for TP-Link WDR4300 router from http://wiki.openwrt.org/toh/tp-link/tl-wdr4300. You will also find the instructions on the upgrade process there. Next, visit the web GUI interface of the TP-Link WDR-4300 router. In my case, this was at http://192.168.1.1 of the factory TP-Link firmware. Select System Tools -> Firmware Upgrade, click on Browse... … Continue reading How to install OpenWRT on the TP-Link WDR-4300 router

How to upgrade packages in OpenWRT to apply updates, security patches and more

So you installed the OpenWRT firmware on your wireless router! It works like a charm. However, what would you need to do to upgrade the firmware periodically? A secure router is only as good as the last security patch applied. The best feature of OpenWRT over dd-wrt or even Android, is that you do not … Continue reading How to upgrade packages in OpenWRT to apply updates, security patches and more

How to install telegram pidgin plugin in Ubuntu Linux

Telegram is an application for Android phones just like WhatsApp. The key advantages of Telegram are that it assures users that their data is not used by any 3rd party, users have more control over it, with the ability to send secret messages, self-destruct messages and complete removal if a user exits the service. If … Continue reading How to install telegram pidgin plugin in Ubuntu Linux