Linux

How to obtain Let’s Encrypt SSL Certificate for Apache or Nginx using Certbot

Now SSL is one of SEO (Search Engine Optimization) signal.…

How to check UDP connection on Linux using Conntrack

This linux command line to check UDP connection on Linux…

How to auto sync file to another server using Lsyncd on Centos 7

Lsyncd watches a local directory trees event monitor interface (inotify…

How to SELinux allow Apache or PHP-FPM connect remote MySQL

If you have trouble apache or PHP-FPM can not connect…

How to Sync Directories Using Rsync with Custom SSH Port

SSH default port is 22, every body knew it. And…

How to make symbolic link on Linux chroot or jail user

Sometimes we need to create a jailed user on Linux…

Encrypt your files with VeraCrypt on Linux, Windows, Mac OS and Android

This article will guide you how to secure your files…

How to create encrypted disk image with Linux LUKS format using Cryptsetup

If you have sensitive data or file, you can make…