Linux – Page 3

How to install TOR (The Onion Router) on Ubuntu

Tor (The Onion Router) is a system that allows you to establish an anonymous network connection that is protected from listening. It is considered as an anonymous network that provides encrypted data transmission.

How to solve Excessive resource usage: cpanelroundcube

Once, one of the employees opened a web-based email interface (usually located at https://example.com:2096), left the browser window open for a long time, and then the following messages began to arrive at the administrator’s email:

PCI Express ASPM

ASPM (Active-State Power Management) is used to manage the power consumption of PCI Express buses, even if the PCIe device is in use and may affect the device’s response delay.

Netplan. Adding Routes

I’ll give an example of adding routes in the Netplan configuration.

How to disable auto-update on Ubuntu 18

Sometimes on some servers it is extremely necessary to turn off automatic system updates, since services compiled from the source code for a specific kernel may not start after updating it, so I decided to write this article.

How to save IPTables rules

In this article, I will describe several options for saving IPTables rules so that they load when the operating system starts.

Solution: No /etc/rc.local file on Ubuntu 18

I once noticed that by default there is no /etc/rc.local file in Ubuntu 18, but it can be created.

Accel-ppp. error nl_modify: File exists

Once I noticed the following error in the /var/log/accel-ppp/accel-ppp.log:

Accel-ppp session termination script

I will give an example of a script to end the sessions taken on the official telegram channel Accel-ppp. Using accel-cmd and grep, we select the necessary sessions, for example, by the speed of the shaper, or part of the IP address, for example 10.10.10. and then for example send these sessions terminate if ipoeX soft or hard via accel-cmd.

Mail server with Postfix, Dovecot and MySQL

I will give an example of setting up a simple mail server on Postfix, Dovecot and MySQL.
For the test, I use the Ubuntu 16.04 operating system.