On other post, we create an article how to obtain Let's Encrypt SSL Certificate on Centos 6/7/8 or RHEL 6/7/8.…
Now SSL is one of SEO (Search Engine Optimization) signal. Read it on Google Webmaster Blog. If you only has…
This linux command line to check UDP connection on Linux using Conntrack command. # conntrack -L -p udp If you…
Lsyncd watches a local directory trees event monitor interface (inotify or fsevents). It aggregates and combines events for a few…
If you have error warning on CSF (ConfigServer Security & Firewall) on Linux servers when start or restart CSF like…
If you have trouble apache or PHP-FPM can not connect to remote MySQSL server, example error on PDO connection on…
SSH default port is 22, every body knew it. And it will cause many brute force SSH attacks. For security…
Sometimes we need to create a jailed user on Linux to restrict that user. However, sometimes we need the jailed…
This article will guide you how to secure your files using VeraCrypt, a free and open source encryption tools and…
If you have sensitive data or file, you can make an iso image on Linux. For example backup file, photo…