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Linux Text Editor
Everything is file in Linux operating system. So, anyone who wants to work with Linux operating system (specially, Red Hat or CentOS) must learn how to edit files in Linux operating system. Because, it is always prefer to avoid graphical user interface (GUI) for changing system configuration parameters in Linux operating system unlike Windows operating system. You should be expert enough to edit any file in Red hat Linux operating system otherwise you will face a lot of difficulty to maintain your Red Hat Linux operating system. Red Hat Linux files can be edited with command line editor such vi, vim, nano etc or graphical user interface (GUI) editor such as gedit. But Red Hat Linux administrators always prefer to work with command line editor. So, this article is designed to show you how to work with Red Hat Linux command line editor (vi/vim text editor) properly. Vi / Vim Text Editor If you are familiar enough with Windows operating system, you may see notepad or WordPad which is default file editor in Windows operating system. Similarly vim, nano, emac, pico and gedit are various file editors in Red Hat Linux operating system. Among these, vi and vim are the [...]
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Ubuntu Server Set Static IP Address with Netplan | July 1, 2021
Ubuntu Server is one of the most popular open source sever operating systems. Ubuntu Server can be used in production without any hassle. In my previous article, I discussed how to install Ubuntu Server’s latest version (Ubuntu Server 20.04) with LVM. In this article, we are going to see how to assign static IP address in Ubuntu Server with Netplan network management tool. Netplan Since Ubuntu Server 17.10, Netplan is being used as the default network management tool instead of [...]
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Managing Disk Partition with the parted Tool in CentOS 7 | March 2, 2019
As a system administrator, sometimes you may require to manage partitions of your CentOS/Red Hat Linux Operating System. Partition management is always a risky task. But there are some useful tools those are so helpful to manage CentOS/Red Hat Linux disk partition easily. In my previous article, I discussed how to manage CentOS/Red Hat 7 HDD partitions with the fdisk utility. The fdisk tool is only eligible to manage MBR partition table. But GPT partition table is now becoming more [...]
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CentOS 7 Partition Management with fdisk Utility | February 11, 2019
CentOS or Red Hat Linux is a popular server operating system to the system administrators. Almost all the system admins or IT guys who play with mail server, file server, proxy server and so on are so known with CentOS or Red Hat Linux and cannot go a single day without this operating system. The guys who are also wish to be a system admin should be familiar with CentOS or Red Hat operating system. In my previous article, I [...]
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MikroTik Load Balancing with 2 PPPoE and 1 Static WAN using ECMP | September 24, 2019
ECMP provides almost 100% reliable load balancing and link redundancy solution. ECMP is a per connection load balancing where connection is marked with source and destination IP pair. In my previous article I discussed how to configure DUAL WAN load balancing with failover using ECMP method where WAN connections were static IP Addresses. But some ISP companies use PPPoE service for their client connection. So, some network administrators become confused to configure load balancing with PPPoE WAN connection because PPPoE [...]
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MikroTik PPPoE Setup with Radius Server Prepaid Billing System | December 23, 2017
MikroTik PPPoE Server is popularly used in ISP Companies to maintain user connection. Along with MikroTik PPPoE Service it is a better idea to make a prepaid billing system with Radius Server. MikroTik User Manager Radius Server is a user authentication and accounting application that gives the ISP Company ability to manage PPPoE user’s connection with proper bandwidth management as well as their prepaid billing system with scratch card. So, any ISP Company can turn a smart network system with [...]
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FreeRADIUS MySQL Database GUI with phpMyAdmin on CentOS 7 | January 30, 2019
FreeRADIUS is a high performance RADIUS Server that accepts a large number of networking devices as RADIUS Client including MikroTik Router. MySQL is one of the best user sources for freeRADIUS server. In my previous article, I discussed how to install freeRADIUS server on CentOS 7 and how to integrate MySQL module with freeRADIUS server. I also discussed how to create user group and profile in MySQL database server and authenticate MikroTik PPPoE client with MySQL database user. I used [...]
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PPPoE Server Configuration in MikroTik RouterOS 7 | December 2, 2023
MikroTik PPPoE is a client-server protocol and mostly used at the end ISP configuration where MikroTik RouterOS acts as a PPPoE Server and user’s WiFi Router acts as PPPoE client. MikroTik PPPoE Server can be used with MikroTik simple queue management. So, it helps to manage user’s bandwidth easily. People who are trying to do internet business should learn MikroTik PPPoE Server. Configuring PPPoE Server in MikroTik RouterOS 7 is so easy. If you have knowledge on basic RouterOS 7 [...]
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MikroTik OpenVPN Configuration on TCP Port 443 with Windows OS | April 6, 2020
MikroTik OpenVPN is an amazing VPN solution. IT provides a secure and encrypted VPN tunnel across public network. Unlike PPTP and L2TP VPN Services which are poorly designed and can easily be blocked, OpenVPN can highly be customized and even can be run on so popular TCP Port 443. So, OpenVPN cannot easily be blocked. OpenVPN uses SSL/TLS Certificates. So, OpenVPN Tunnel is a trusted tunnel to send and receive data across public network. OpenVPN is a site to site [...]
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IP Based Virtual Hosting on CentOS 7 with Apache Server | July 18, 2019
Virtual Hosting is a method of hosting multiple domains on single web server. If you have multiple domains (such as domain1.com, domain2.com and so on) and want to host on single web server, Virtual Web Hosting is your right choice. Apache web server provides an easy way to manage Virtual Hosting. Virtual Hosting can be either Name Based or IP Based. In Name Based Virtual Hosting, multiple domains can be hosted on single IP address. On the other hand, in [...]
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