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 . . . → Read More: 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… . . . → Read More: 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 . . . → Read More: 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 . . . → Read More: How to install telegram pidgin plugin in Ubuntu Linux

How to create image map using LibreOffice Impress for use on a web page

My objective was to create an image map of a slide I created using LibreOffice Impress. See this link for the result. Here is how I went about it:

Create a presentation or flow diagram with the shapes you want, in LibreOffice Impress. Save the presentation as an ODP file, which is the default LibreOffice . . . → Read More: How to create image map using LibreOffice Impress for use on a web page

How to receive other people’s GnuPG / PGP public key from a key server into your key ring

You will be able to sign emails using your private key by default. This means that people know that it is your email ID that is the originator of the email. However, if you want to send people encrypted messages, you need to have their public keys in your key ring. You need to get . . . → Read More: How to receive other people’s GnuPG / PGP public key from a key server into your key ring

Downgrade dd-wrt firmware from dd-wrt version 24461 to dd-wrt version 24160

Recently, there have been no upgrades to the dd-wrt firmware I use on my routers. Found that the last dd-wrt firmware version 24461, did not permit upgrades to newer firmware due to a bug in it. It also did not allow downgrades to a lower version of dd-wrt via the Web GUI interface or any . . . → Read More: Downgrade dd-wrt firmware from dd-wrt version 24461 to dd-wrt version 24160

How to set up Airtel Mobile Internet access manually on Android phone

Recently, it was very tough to get the mobile internet settings from India’s largest cellular service provider. This link on their website to receive settings via SMS never worked despite several retries on different days.

Finally, he called their helpline at 121 and got to the option where they ask all sorts of questions including . . . → Read More: How to set up Airtel Mobile Internet access manually on Android phone

Firefox on Android

After a long time, finally Firefox works very well on Android. Download it from the Google Playstore. Make sure you also get the following add-ons: 1. Adblock Plus (blocks ads while surfing) 2. Ghostery (Blocks cookies, trackers) 3. Clean Quit (Quits after deleting cookies etc)

If you do attend any online education courses or webinars, . . . → Read More: Firefox on Android

Web sites track users with invisible canvas fingerprint rather than cookies or flash cookies

There are several websites world over that track users. Originally, tracking mechanisms included Cookies, Flash Cookies. Historically too, I have written about Firefox add-ons in the articles below: Firefox add-ons you should never surf without Watching you silently – Flash Cookies / LSOs

As mitigation measures were developed to counter cookies and flash cookies, old . . . → Read More: Web sites track users with invisible canvas fingerprint rather than cookies or flash cookies

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