centos 7 change network settings

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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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    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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    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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    CentOS 7.5 Installation Step by Step with GUI (GNOME Desktop) |   August 15, 2018

    Linux is a free and open source operating system developed by Linus Torvalds on September 17, 1991. It is mainly used as server environment. A lot of Linux distributions are present today. Among them, Red Hat Linux is used as enterprise Linux. Red Hat is also known as Red Hat commercial Linux that means Red Hat is a paid service program. CentOS (Community Enterprise Operating System) is another Linux distribution that provides a free and open source, enterprise-class, community-supported server platform functionally compatible with [...]

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    Red Hat/CentOS 7 Linux Installation (Minimal Packages) |   April 18, 2017

    Linux is a free and open source operating system developed by Linus Torvalds on September 17, 1991. It is mainly used as server environment. A lot of Linux distributions are present today. Among them, Red Hat Linux is used as enterprise Linux. Red Hat is also known as Red Hat commercial Linux that means Red Hat is a paid service program. CentOS (Community Enterprise Operating System) is another Linux distribution that provides a free and open source, enterprise-class, community-supported server platform functionally [...]

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    MikroTik PPPoE Server Configuration with freeRADIUS Server |   January 20, 2019

    PPPoE Service is one of the most popular services in MikroTik Router. It is specially used by the local ISP provider for the simplicity of client connection. MikroTik PPPoE Service accepts user or client authentication and authorization both MikroTik local user database and RADIUS user database. RADIUS Server provides an efficient way to manage user authentication, authorization and accounting.  FreeRADIUS is a high performance RADIUS suite that provides user authentication, authorization and accounting facility for a number of network devices [...]

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    MikroTik Hotspot Customization |   April 5, 2017

    Hotspot is one of the most popular services in MikroTik router. MikroTik Hotspot Gateway is a policy to authorize network clients before to access local network resources as well as public network resources through MikroTik router. In a Hotspot network, the user can login or authenticate using almost any web browser, so there is no need to install any additional software to client end. As Hotspot login prompt is a webpage, Hotspot service can effectively be used as an advertising medium of [...]

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    WireGuard Site to Site VPN Between MikroTik RouterOS 7 |   September 29, 2022

    WireGuard is a free, open source, secure and high-speed modern VPN solution. WireGuard is extremely easy to implement but utilizes state-of-the-art cryptography. WireGuard can be used as either Client-Server VPN technology or Site to Site VPN technology. From the RouterOS 7, MikroTik introduces WireGuard VPN as their native package. So, who are using RouterOS 7 can use WireGuard VPN and can implement both client-server and site to site VPN with WireGuard free VPN server. In my previous article, I discussed [...]

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    MikroTik IPIP Tunnel with IPsec (Site to Site VPN) |   March 18, 2018

    VPN (Virtual Private Network) is a technology that provides a secure tunnel across a public network. A private network user can send and receive data to any remote private network using VPN Tunnel as if his/her network device was directly connected to that private network. MikroTik provides IPIP tunnel that is used to create a site to site VPN. IPIP tunnel is a simple protocol that encapsulates IP packets in IP to make a tunnel between two routers. To encapsulate [...]

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    Ubuntu Server 20.04 Installation with LVM |   May 28, 2021

    Linux is a free and open source operating system developed by Linus Torvalds on September 17, 1991. It is mainly used as server environment. A lot of Linux distributions are present today. Among them, Ubuntu is one of the best stable Linux distributions. Ubuntu has both Desktop and Server distribution. Ubuntu Server is a high performance and stable enterprise Linux distribution and it can be easily used in production. Ubuntu Server has both community-support and well documentation. So, IT guys can use Ubuntu [...]

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