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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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MikroTik User Management (RouterOS User) | October 22, 2017
MikroTik User Management plays an important role in MikroTik system administration as well as MikroTik security. Don’t be confused the title User Management with the MikroTik UserManager. UserManager is an optional and totally separate package distributed by MikroTik. UserManager is an implementation of Radius server that is used to maintain not only RouterOS users but also PPPoE, PPTP, Hotspot, Wireless and DHCP users. In my few future articles, I will discuss how to maintain these users with MikroTik UserManager Radius [...]
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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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MikroTik VRRP Configuration with Load Sharing | November 19, 2018
MikroTik VRRP (Virtual Router Redundancy Protocol) ensures high availability internet network. If any organization requires uninterrupted internet connection, MikroTik VRRP implementation will be a vital solution for them. MikroTik VRRP creates a virtual router accumulating two or more physical routers and ensures uninterrupted internet connection keeping activate one physical router always. That means, if any physical router fails to operate due to any hardware failure, MikroTik VRRP uses another backup router for internet gateway until the running router comes back [...]
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Getting Started with Red Hat Linux | May 20, 2017
Red Hat Linux is an open source server operating system. Although open source Red Hat is a commercial Linux distribution. So, most of the Linux administrators use CentOS because CentOS is a free and open source, enterprise-class and community-supported server platform as well as it is functionally compatible with Red Hat Enterprise Linux. In my previous article, I showed how to install CentOS 7 core packages in your server machine. Today I will introduce you with Red Hat Linux’s command [...]
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MikroTik Hotspot Customized Login Template | April 14, 2022
MikroTik Hotspot is a popular service which is used to manage ISP, Hotel, Restaurant, Airport, and Public WiFi. Using billing application like GalaxyRAD with MikroTik Hotspot, a WiFi network can manage professionally. MikroTik Hotspot loads a login page for new user authentication. So, this login page is a vital source for promoting your brands. The default login template provided by MikroTik Hotspot is a simple template which cannot fulfill branding requirements. But it is possible to customize the login template [...]
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MikroTik Load Balancing over Multiple Gateways (2 WAN) | October 13, 2016
Load Balancing is a technique used to send network traffic over multiple gateways. If you have multiple ISP connections in your network, you can send your network traffic through those ISP connections and can make a load balancing network. Accidently you may ask me, why will I use multiple ISP connections? What are the benefits to use multiple ISP connections in my network? I will say, ask yourself deeply then you will find the reasons why multiple ISP connections is [...]
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Hardening MikroTik RouterOS by Limiting Login Services | February 6, 2021
MikroTik RouterOS is usually used as a bridge between WAN and LAN network. WAN network is always an insecure network because attackers always try to hack your RouterOS so that they can compromise it for their own benefit. As a network administrator of MikroTik RouterOS, we should always take anti hacking steps to secure our MikroTik RouterOS. There are a lot of security tasks those we should take care to secure our MikroTik RouterOS. Among these security tasks, we will [...]
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MikroTik Bandwidth and Resource Monitoring with Graphs | January 31, 2018
“Am I getting my committed bandwidth?” is a common question to any network administrator. This question may arise either from your customer or from your owner if you are an employee of any organization. If you feel boring hearing this question and want to establish a system where your customer will be able to inspect his bandwidth usage, MikroTik Graphing is your best friend. MikroTik Graphing can be used to display graphics for traffic which is passed through interfaces and [...]
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MikroTik Hotspot HTTPS Redirect and HTTPS Login Setup | May 24, 2020
MikroTik Hotspot is one of the most popular services in MikroTik Router. It is a policy to authorize network clients before to access local network resources as well as public network resources through MikroTik Router. In my previous article I discussed MikroTik Hotspot Configuration using Winbox. But default MikroTik Hotspot configuration faces HTTPS Redirect and HTTPS Login issues. To solve these issues, MikroTik Hotspot HTTPS configuration is required. So, in this article I will discuss how to configure MikroTik Hotspot [...]
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