Author: Alex

Wine is missing from the context menu on Ubuntu (SOLVED)

Posted by Alex On November 28, 2021

To run Windows applications on Linux, it is usually enough to double-click on them. But it may be that the .exe file will be opened by the archive manager or another application (usually the archive manager). If you try to select the “Open With Other Application” item in the context menu, then Wine will not be there. Even worse, it...

How to manage VPN Settings in GNOME 3

Posted by Alex On November 25, 2021

A popular example of a Linux distribution using GNOME 3 is Ubuntu. Install NetworkManager VPN plugin for OpenVPN In order for you to have the menu item shown in this manual in NetworkManager, you must have the NetworkManager VPN plugin for OpenVPN installed. Some distributions have it installed by default. If you don't have it, run one of the following...

How to manage VPN Settings in Xfce

Posted by Alex On November 25, 2021

Popular distributions with Xfce include Kali Linux and Xubuntu. In Xfce, networks are managed in the “Network Connections” window. Install NetworkManager VPN plugin for OpenVPN In order for you to have the menu item shown in this manual in NetworkManager, you must have the NetworkManager VPN plugin for OpenVPN installed. Some distributions have it installed by default. If you don't...

How to manage VPN Settings in Cinnamon

Posted by Alex On November 25, 2021

The Cinnamon desktop environment is primarily characteristic of Linux Mint. Install NetworkManager VPN plugin for OpenVPN In order for you to have the menu item shown in this manual in NetworkManager, you must have the NetworkManager VPN plugin for OpenVPN installed. Some distributions have it installed by default. If you don't have it, run one of the following commands to...

Simultaneous use of multiple OpenVPNs on one server

Posted by Alex On November 25, 2021

You can simultaneously use several OpenVPN processes on the same server, while they will work on different ports and provide separate virtual private networks that do not overlap with each other. Multiple instances of OpenVPN are provided out of the box, but additional configuration is required. 1. OpenVPN services must use different ports All OpenVPN services must use a free...

Comparison of performance (data transfer rate) of OpenVPN over UDP and TCP

Posted by Alex On November 25, 2021

The previous article showed how to use OpenVPN with TCP instead of the default UDP. It is also known that the use of the TCP protocol is not recommended because, due to the “overhead” of the TCP transport protocol, less payload will be transmitted, since part of the channel will be occupied by the transmission of overhead information necessary to...

How to use OpenVPN with TCP protocol

Posted by Alex On November 25, 2021

By default, OpenVPN uses UDP and it is officially recommended to use it. However, TCP also works great with OpenVPN and you can use it if needed. Theoretically, the TCP protocol has more “overhead”, that is, some part of the transmitted data will not carry the payload, but is only necessary for the normal operation of TCP, which monitors the...

How to change configuration files when migrating from OpenVPN 2.4.* to OpenVPN 2.5.*

Posted by Alex On November 25, 2021

As of fall 2021, OpenVPN has moved to the new major branch 2.5.* for almost a year. If you were slow to update, now the new branch can be considered time-tested. However, if you are upgrading from the 2.4 branch, you may need to adjust the configuration files. 1. In the server and client configuration files, replace the line cipher...

LibreOffice opens sftp connection (SOLVED)

Posted by Alex On November 20, 2021

sftp is a utility from the OpenSSH package that combines the functions of FTP and SSH, that is, it provides convenient access to the remote file system, allowing you to edit, copy, delete files on the server in a graphical interface. In this case, the connection and data exchange takes place over a secure, encrypted channel. After connecting via sftp,...

What happens if Linux runs out of RAM. Do I need a Swap file

Posted by Alex On November 20, 2021

Linux installers create a swap file or partition by default. The Swap file is used when the RAM is full, in this case the system writes part of the data that is not needed right now from the RAM to the Swap file, which somewhat unloads the RAM. Subsequently, the system can re-move the data from the Swap file into...
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