Vyacheslav

How to downgrade PHP

Using an example, I will downgrade PHP in Ubuntu 18.04, in which version 7.2 is installed by default. I do not recommend downgrading PHP, since newer versions are more productive and close vulnerabilities, but there are times when you need to run an old script or engine that does not work on newer versions of PHP, and it is very difficult to fix the code due to the fact that there are a lot of files.

Configuring PPTP (VPN) server on Mikrotik

First, I will describe the first simple option for setting up a PPTP (VPN) server on Mikrotik via the web interface or Winbox. In this embodiment, only one client can connect to the server.

Installing and configuring PPTPd server

Below I will describe how pptpd is installed and configured. On the test I will install in Ubuntu Server 18.04.

Sula River. Four days on a boat in 2019

Asterisk Call Forwarding

Let me give you an example of setting call forwarding in Asterisk.
For example, on Grandstream IP phones, you can enable redirection by the functions of the phone itself, but if the phone is far away and there is no way to do it on it, but it is possible to log in using the SIP number of this phone, then to activate call forwarding, you can make a voice menu when dialing a certain number, for example, *21 to activate call forwarding and enter the phone number to which calls will be forwarded, and *22 to cancel call forwarding.

Installing and configuring fprobe

On the test, I will install the fprobe sensor, which will collect statistics from network interfaces and transmit it to the collector.

UBIQUITI (UBNT) OID’s & MIB’s

Below is a list of possible OIDs and MIBs:

MySQL Error Solution: Can’t create table ‘tablename’ (errno: 150)

MySQL error: Can’t create table ‘tablename’ (errno: 150) can occur when you, for example, upload a backup and MySQL is powered to create table 1 which refers to table 2, which essentially does not exist yet. You can solve by inserting the lines at the beginning in the backup:

How to change user login in WordPress

To change the WordPress user login, you need to execute an SQL query to the database, since this cannot be done through the admin panel menu.

How to Prevent WordPress Theme Updates

Once upon a time a free theme was activated on one site and a lot of changes were made in it, so that someone would not accidentally update it and not overwrite the changes, I did the following: