How to Install ntopng Traffic Analysis Tool on Ubuntu Server

ntopng (ntop next generation) is a high-speed web-based traffic analysis and flow collection tool. This tutorial is going to show you how to install and use ntopng on Ubuntu server. I started using ntopng because I wanted to block BitTorrent traffic on my cloud VPN server. If someone downloads illegal materials with BitTorrent when the…


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How to Install ntopng Traffic Analysis Tool on Ubuntu Server

Part 3: Set Up PostfixAdmin Virtual Mailboxes on Debian Mail Server (PostgreSQL)

In previous articles, we discussed how to set up your own mail server on Debian from scratch. In part 1 and part 2 of this tutorial series, we learned how to set up Postfix SMTP server and Dovecot IMAP server, but so far we can only have email addresses for users with local Unix accounts.…


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Part 3: Set Up PostfixAdmin Virtual Mailboxes on Debian Mail Server (PostgreSQL)

How to Set Up OpenLDAP Server on Debian 11

In this tutorial, we are going to take a look at installing and Configuring OpenLDAP server on Debian 11. We will also install the LDAP Account Manager web-based management tool. What is OpenLDAP OpenLDAP is an open-source and fast directory server that provides network clients with directory services. Client applications connect to OpenLDAP server using…


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How to Set Up OpenLDAP Server on Debian 11

How to Easily Transfer Old Emails to Your New Email Server

In previous article, we discussed 5 best business email hosting solutions. This tutorial is going to show you how to easily transfer your old emails to your new email server. No matter what your old mailbox provider is (Gmail, Yahoo, Microsoft, etc), you can use the method in this article. Step 1: Install Thunderbird Windows…


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How to Easily Transfer Old Emails to Your New Email Server

How to Encrypt Emails with OpenPGP in Thunderbird (2022)

In previous parts of the GPG tutorial series, I explained how GPG encryption works. In this tutorial, you will learn how to send encrypted emails in the Thunderbird email client, so you don’t have to type commands in the terminal. Thunderbird includes built-in OpenPGP support starting with version 78. It can encrypt your emails and…


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How to Encrypt Emails with OpenPGP in Thunderbird (2022)