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  How to install OpenVPN on Ubuntu 20.04 written by  Thạch Phạm   Published:   08/05/2022 Last Updated on   08/03/2023     https://azdigi.com/blog/en/linux-server-en/tools-en/how-to-install-openvpn-on-ubuntu-20-04/ What is OpenVPN? Steps to install OpenVPN Step 1: Update the system Step 2: Download and install OpenVPN from the script Step 3: Download the configuration file to your computer Step 4: Set up & use OpenVPN 1. Set up using OpenVPN on your computer 2. Set up & use OpenVPN on mobile Step 6: Check the internet connection What is OpenVPN? OpenVPN is a completely free open-source VPN program. OpenVPN is also considered the best solution for those who want a safe and secure connection between two networks. OpenVPN allows secure point-to-point connections in routed or bridged configurations and remote access facilities. It uses a custom security protocol based on SSL/TLS to establish an encrypted connection on the Internet. And currently, at AZDIGI, the techniques have been

 https://www.youtube.com/watch?v=4RQtSq0oqDM

 https://support.globalsign.com/ssl/general-ssl/tls-protocol-compatibility Browsers   TLS 1.0 TLS 1.1 TLS 1.2 TLS 1.3 Desktop IE 11 latest version ✗ ✓ ✓ ✓ Desktop and mobile IE version 11 ✓ ✓ ✓ ✗ Desktop IE versions: 8, 9, and 10 ✓ Partial [ See Note 1 ] Partial [ See Note 1 ] ✗ Desktop IE versions 7 and below ✓ ✗ ✗ ✗ Mobile IE version 10 and below ✓ ✗ ✗ ✗ Microsoft Edge latest version ✗ ✓ ✓ ✓ Microsoft Edge ✓ ✓ ✓ ✗ Mozilla Firefox 63 or higher ✗ ✓ ✓ ✓ Mozilla Firefox 27 and higher ✓ ✓ ✓ ✗ Mozilla Firefox 23 to 26 ✓ Partial [ See Note 2 ]  Partial [ See Note 2 ] ✗ Mozilla Firefox 22 and below ✓ ✗ ✗ ✗ Google Chrome 80 or higher ✗ ✓ ✓ ✓ Google Chrome 30 to 79 ✓ ✓ ✓ ✗ Google Chrome 22 to 32 ✓ Partial [ See Note 3 ] Partial [ See Note 3 ] ✗ Google Chrome 21 and below ✓ ✗ ✗ ✗ Android 10.0 or higher ✗ ✓ ✓ ✓ Android 5.0 (Lollipop) and higher ✓ ✓ ✓ ✗ Android 4.4 (Kitkat) to 4.4.4 ✓ Partial ( See Note 4 ) Partial ( See Note 4 ) ✗ Android 4.3 (Jelly Bean) and below ✓ ✗ ✗ ✗ Desktop Safari version