centos 7 network config with nmtui
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CentOS 7 Network Configuration Using nmtui Tool
After completing CentOS 7 fresh installation, the first task to a system administrator is to configure its network so that it can communicate to other network devices. In my previous article, I discussed how to install CentOS 7.5 GUI (GNOME Desktop) step by step. If you are a new CentOS 7 user and yet you have not installed CentOS 7.5 on your server machine, feel free to study my previous article and install CentOS 7.5 GNOME Desktop according to that article. After completing installation, it is time to configure CentOS 7 network. In this article, I will show you how to easily configure your CentOS 7 network with Network Manager Text User Interface (nmtui) tool. How to Configure CentOS 7 Network In CentOS 7 Linux, the default networking service is provided by a dynamic network control and configuration daemon named NetworkManager. The NetworkManager tries to keep network devices and connections up and active when they are available. Although NetworkManager is a new and active service for controlling network in CentOS 7 Linux, the traditional ifcfg type configuration files are still supported. There are four methods to configure network in CentOS 7 Linux using NetworkManager. Network configuration using Text User Interface [...]
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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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DNS Server Configuration on CentOS 7 (Caching DNS with BIND) | June 24, 2019
DNS (Domain Name System) Server is an essential part to any computer network. Today web communication cannot imagine without DNS Server. DNS is a client server protocol where DNS Client requests for the domain name resolution and DNS Server response on it. Every network should have a DNS Server because local DNS Server improves network performance by caching DNS information and serving DNS request locally. DNS Server can be configured either Windows or Linux operating system. In this article, I [...]
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CentOS 7.5 Installation with GUI and LVM Partition | March 7, 2019
Red Hat/CentOS Linux is a popular server operating system. Specially who work on mail server, web server, web proxy server, ftp server and file server are so familiar with the Red Hat/CentOS Linux. In my previous article, I discussed how to install CentOS 7.5 Linux step by step with the standard partition. But if you want to work on mail server, web proxy server, ftp server, file server or any other application where disk space changes frequently, the standard partitioning [...]
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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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FreeRADIUS Installation and Basic Configuration on CentOS 7 | November 28, 2018
FreeRADIUS is a modular, high performance and highly customizable open source RADIUS server. Anyone can use FreeRADIUS without any charge and can customize his RADIUS server according to his organizational requirements. In my previous article, I discussed how to install and configure user manager RADIUS server developed by MikroTik. The main disadvantage of user manager RADIUS server is ‘it is not customizable and not suitable for medium or large organization’. On the other hand, FreeRADIUS is giving facility to customize [...]
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MikroTik Hotspot Free Trial Internet Setup | August 14, 2020
MikroTik Hotspot is an awesome Hotspot internet solution. It has a lot of features to customize any Hotspot service. Sometimes we may require providing free trial internet in a Hotspot service. MikroTik Hotspot provides easy solution to provide free trial internet to the new user before going to paid version. In my previous article I discussed how to configure MikroTik Hotspot using Winbox. In this article I will discuss how to configure free trial internet in MikroTik Hotspot Server. Free [...]
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Apache2 Web Server HTTPS Configuration on Ubuntu Server | August 15, 2021
Data transmission between web server and web client over port 80 (HTTP) is not encrypted. So, any middle man between web server and web client can view transmitted data and can steal secret information. To overcome this limitation, HTTPS Protocol over port 443 has been introduced. HTTPS is a secure web server that is configured with SSL/TLS certificate. TLS (Transport Layer Security) and its predecessor SSL (Secure Sockets Layer) are web protocols used to wrap normal traffic in a protected, [...]
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Install MikroTik RouterOS on PC | June 13, 2016
MikroTik is a popular and mostly used router worldwide because of having a lot of networking functionalities and its cheap price. If we buy a MikroTik Routerboard (like MikroTik Routerboard 450G, MikroTik Routerboard 1100 AH etc.), we will find a machine where MikroTik RouterOS is prebuilt but the machine contains limited processing resources such as limited RAM and limited processor core. So, our network could be slow if you use a MikroTik RouterBoard for maintaining a large network. On the [...]
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Linux Text Editor | September 7, 2017
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 [...]
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