Computer Tips - Programming, Cybersecurity and Tech Tutorials

In this tutorial, I have installed a free SSL certificate from Let's Encrypt using the Certbot tool on Google Cloud Platform VM running Debian OS that hosts a WordPress site using Apache server. You can follow similar steps for other Cloud providers / OS distributions / CMS vendors / Web servers . Part-1: Configure Virtual Host for your domain on Apache cd /var/www/html wp option update home 'https://example.com' wp option update siteurl 'https://example.com' sudo nano /etc/apache2/sites-available/example.com.conf sudo apache2ctl configtest sudo a2ensite example.com sudo systemctl reload apache2

Learn more about VPN, VPN types, VPN protocols and free VPN servers: https://com.puter.tips/search/label/VPN You can set up a PPTP server or an L2TP/IPsec connection on Android as shown in the previous articles or you can use a TOR enabled android app as described in this article. What is Tor? Tor is free software for enabling anonymous communication and an open network that helps you defend against traffic analysis, a form of network surveillance that threatens personal freedom and privacy, confidential business activities and relationships, and state security. The name is derived from an acronym for the original software project name "The Onion Router". Tor on Android Tor is available for Android by installing our package named Orbot. Orbot is an application that allows mobile phone users to access the web, instant messaging and email without being monitored or blocked by their mobile internet service provider. Orbot brings the features and function...

Learn more about VPN and PPTP: https://com.puter.tips/2018/09/free-vpn-service-for-router.html OSI model layers The main concept of OSI is that the process of communication between two endpoints in a network can be divided into seven distinct groups of related functions, or layers. Each communicating user or program is on a device that can provide those seven layers of function. In this architecture, each layer serves the layer above it and, in turn, is served by the layer below it. So, in a given message between users, there will be a flow of data down through the layers in the source computer, across the network, and then up through the layers in the receiving computer. The seven layers of function are provided by a combination of applications, operating systems, network card device drivers and networking hardware that enable a system to transmit a signal over a network Ethernet or fiber optic cable or through Wi-Fi or other wireless protocols. Data Link (Layer 2)...

What is a Virtual Private Network (VPN)? A virtual private network extends a private network across a public network and enables users to send and receive data across shared or public networks as if their computing devices were directly connected to the private network. Why have a VPN? A VPN, or virtual private network, is a secure tunnel between two or more devices. VPNs are used to protect private web traffic from snooping, interference, and censorship. Virtually anyone can benefit from VPN, whether it is to access content outside of your territory, protect your private information, or get access to cheap airfares. There are many attributes that must be considered when choosing a VPN as well; not all VPNs were created equal. There are two basic VPN types: 1. Remote Access VPN 2. Site – to – Site VPN Types of VPN protocols: The above two VPN types are based on different VPN security protocols. Each of these VPN protocols offers different features and le...

If you are a Firefox fan than you must have experienced periodical out-dating and temporary unavailability of your favorite extension every time you update your browser. Same thing is going on with the upcoming release of Firefox which is Firefox 57. It will release from November 2017 but if you are on beta channel you can upgrade to it now, from October 2017. If you have upgraded you will notice many extensions are not compatible and since disabled by-default and there is no option available to enable them. These extensions are listed as "Legacy Extensions" which used to be listed as incompatible extensions in previous versions. From Firefox Official Blog: In the past, extensions often stopped working each time a new version of Firefox was released, because developers had to update them every six weeks to keep them compatible. Since extensions could also modify Firefox internal code directly, it was possible for bad actors to include malicious code in an innoce...

OpenSSL is an open source toolkit for implementing secure sockets layer (SSL) and transport layer security (TLS) protocol. It provides various cryptographic functions. Latest version is 1.0.2 released on 22nd January 2015. Visit the official website:  https://www.openssl.org/ If you have already installed any VPN or Web server then you will find openssl over there. VPN: C:\Program Files\CyberGhost 5\Data\OpenVPN\openssl.exe PHP: C:\xampp\php\extras\openssl\openssl.exe Apache: C:\xampp\apache\bin\openssl.exe MinGW: C:\MinGW\msys\1.0\bin\openssl.exe And if you don't then go to  https://www.openssl.org/related/binaries.html to download executable file.