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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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Free Web Content Filtering Software for Home Internet | August 10, 2024
We always want to keep safe our home or business internet from unwanted content. There are many internet content filtering softwares those can be used to filter internet content. Among these, OpenDNS is a Free Web Filtering Software used to keep safe home or business internet content. OpenDNS is a DNS based internet content filtering solution. If we use OpenDNS nameservers as DNS, it handles DNS request and filter Malware, Phishing and adult content related websites and denies access. Besides [...]
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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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Port Based Apache Virtual Hosting on RHEL 7 | July 26, 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 Hosting is your right choice. Apache web server provides an easy way to manage Virtual Hosting. Virtual Hosting can be Name Based, IP Based or Port Based. In Name Based Virtual Hosting, multiple domains can be hosted on single Server and single IP address. On the [...]
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MikroTik RouterOS 7 Quick Setup using Winbox 4 | October 6, 2024
MikroTik RouterBoard and MikroTik Wireless Router are popularly used now a days. MikroTik RouterBoard is used in ISP Network and MikroTik Wireless Router is specially used for home users. MikroTik RouterBoard requires custom configuration because it is used for large network. On the other hand, MikroTik Wireless Router is used in home for a small network. MikroTik Wireless Router requires quick setup because home users are so hurry and not so technical. So, MikroTik RouterOS 7 provides a quick setup [...]
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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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Setting Google as Default Search Engine | September 30, 2015
Google is one of the most popular search engines to any online user. It is said that no online user cannot go a single day without Google search engine. Google search statistics shows that over 40,000 search queries are processed every second by Google. If you have any query about any subject, just type in Google search box and Google will show you billion of results related to your search query within less than a second. So, usually you will want [...]
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Restrict Internet Access Based on MAC Address in MikroTik | February 4, 2017
MikroTik router has a lot of features by which a network administrator can design his network as he likes. As a network administrator, sometimes you may need to allow internet access some specific devices. If other devices try to access internet, they will be rejected by your router. For example, say, you have configured a simple network like below diagram. In this network, you have configured WAN, LAN, Gateway, DNS and NAT. Also you have created queue rules for limiting [...]
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How to Block MAC Address in MikroTik RouterOS 7 | July 11, 2024
MikroTik RouterOS 7 by default allows any MAC address to get internet connection through it. But we may need to block some MAC addresses sometimes. There are three methods to block MAC address in MikroTik RouterOS 7 – Blocking MAC Address using Bridge Filter Rule. Blocking MAC Address using Firewall Filter Rule and Blocking MAC Address from DHCP Lease. We can use any of these methods if we want to block MAC Address in MikroTik Router. In this article, we [...]
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MikroTik WiFi Frequency Band and Channel Width Explanation | January 10, 2020
MikroTik WiFi frequency, band and channel width tuning is an important task in any wireless network. If we fail to setup WiFi frequency and channel width parameter properly, we will notice a poor performance of wireless network. WiFi is aimed at use within unlicensed spectrum and the unlicensed spectrum that is usually used for WiFi is 2.4 GHz and 5 GHz band. 2.4 GHz and 5 GHz bands have multiple channels and these channels must be setup properly to get [...]
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