Entries by Dhiraj Rahul

Top 10 VPN Service Providers & Why!!

VPN is actually a Virtual Private Network, whose job is to establish a protected network connection while using public networks. It encodes your internet traffic and impersonates your online identity, which makes it more difficult for third parties to track your activities online and run off with data. VPN helps to set up a secure […]


How to check if port 25 is open or not?

In the realm of computer networking, ports play a crucial role in facilitating communication between different systems. Each port serves as a designated gateway for specific services, allowing data to flow in and out. Among these ports, Port 25 holds particular significance as it is responsible for transmitting email traffic via the Simple Mail Transfer […]

Install Zimbra on Ubuntu 20.04 Step by Step

In my last article on Zimbra, I already discussed the installation of Zimbra on Centos 7/8. In this article, you will learn to install Zimbra on Ubuntu 20.04/21.04. Zimbra is open source mailing solution developed by Synacor. It has another edition as well which is the Network edition. However, Zimbra Open source is used by […]

LVM commands to create, extend & delete partition

What is the Meaning of LVM? LVM stands for logical volume manager aka logical volume management. In simple words, it’s a management solution to manage your disk smartly. With LVM partition you can any time create, extend, shrink, resize, or delete a volume without hampering your ongoing work. You can also add another SSD or […]