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  • LVM Management in CentOS/Red Hat 7 Linux

    LVM (Logical Volume Manager) is the recommended partition method for CentOS/Red Hat 7 Linux. Specially, if we work on Mail Server, File Server, FTP Server, Web Proxy Server or any application where disk space changes frequently, the LVM partition is mandatory in this case. In my previous article, I discussed how to install CentOS 7.5 with LVM partitioning. If you are new here or CentOS 7 is not yet installed, I will suggest you to follow my previous article and install CentOS 7 with LVM partitioning and then continue this article. In this article, I will discuss how to manage LVM partitioning in CentOS/ Red Hat 7 Linux with the command line utility. Basic Components and Architecture of LVM Before going to start LVM management with command line tool, we should have basic knowledge on the basic LVM terms and architecture. The following three terms are the basic components of the LVM partitioning. Physical Volume: The underlying physical storage unit of an LVM is a block device such as a partition of a disk or the whole disk. To use the block device for an LVM logical volume, the device must be initialized as a physical volume (PV). Volume Groups: [...]

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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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    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 Hotspot Login by MAC Cookie Configuration |   July 10, 2020

    MAC Cookie is a newly introduced Hotspot feature in MikroTik Router. MAC Cookie is specially designed to improve accessibility for smartphones, laptop and other mobile devices. MAC Cookie is not a basic login method rather it is an extension of basic Hotspot login method such as HTTP CHAP, HTTP PAP and HTTPS. So, when MAC Cookie is used with these basic Hotspot login methods, it improves the Hotspot user accessibility. In my previous article, I discussed MikroTik Hotspot basic configuration [...]

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    Things to Consider When Developing a Mobile App |   February 27, 2022

    Building a mobile app is one of the best ways to engage your target market and build an audience. If you want to develop a mobile application that will be truly successful, you need to consider every aspect of the development process. At the same time, there are many things to think about when developing a mobile app. Apps are designed to solve problems for people; if you are thinking about creating an app, you need to think about why [...]

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    Upgrading MikroTik RouterOS and Firmware using Winbox |   September 9, 2018

    MikroTik RouterOS is in constant development and new features or bug fixes are frequently available, sometimes even monthly. So, it is always recommend upgrading your MikroTik RouterOS to a latest and stable version before beginning any configuration. Sometimes you may find that your production router is required to be upgraded to a new version based on some logical reasons such as: A new feature is available to a new update and you need to implement that new feature. New version [...]

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    Ubuntu RADIUS Server Configuration with freeRADIUS |   September 3, 2022

    Ubuntu Server is one of most popular open-source Linux Server distribution. It is stable and reliable than other Linux distributions. So, enterprise level application can be hosted on Ubuntu Server. Ubuntu RADIUS Server is popularly used for remote authentication and mostly used with the freeRADIUS open source RAIDUS application. freeRADIUS is one of the most popular and powerful AAA (Authorization, Authentication and Accounting) application. Any enterprise (specially ISP company) can use freeRADIUS for AAA solution and can develop billing system. [...]

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    CAPsMAN Channel Planning with Non-Overlapping Frequency |   March 16, 2020

    MikroTik CAPsMAN is an excellent application for managing multiple CAPs (Controlled Access Point) in a Wireless Network. But multiple APs create frequency overlapping issue if channels are not configured properly. Channel overlapping is required for smooth connection while roaming but there should not be frequency overlapping because frequency overlapping makes wireless performance so poor. In my previous article, I discussed MikroTik CAPsMAN basic configuration with default channel configuration. In this article, I will discuss how to configure CAPsMAN channel to [...]

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    MikroTik Site to Site GRE Tunnel Configuration with IPsec |   March 26, 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 GRE (Generic Routing Encapsulation) tunnel that is used to create a site to site VPN tunnel. GRE tunneling protocol which can encapsulate a wide variety of protocols creating a virtual point-to-point link was [...]

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    MikroTik UserMan RADIUS Server Customers, Users and Routers |   November 13, 2017

    MikroTik User Manager RADIUS Server is a centralized user authentication and accounting application that gives the ISP Company or network administrator ability to manage MikroTik RouterOS user, PPP user and Hotspot user so smoothly. There are two methods to install MikroTik User Manager RADIUS Server in your network. You can install User Manager Package either on a physical RouterOS or on a dedicated Server Machine or on a Personal Computer where RouterOS is running. How to install and configure User [...]

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