centos 7 for beginners
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CentOS 7.5 Installation Step by Step with GUI (GNOME Desktop)
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 its upstream source, Red Hat Enterprise Linux (RHEL). All the commands and functionalities those are available in Red Hat Enterprise Linux are available in CentOS Linux. The current version of CentOS is CentOS 7.5. So, in this article I will show how to install current version of CentOS (CentOS 7.5) with Graphical User Interface (GNOME Desktop). System Requirements CentOS 7 can be installed on your server machine if it has minimum 256MB RAM, 2GB disk space and 64 bit CPU architecture because CentOS 7 does not support 32 bit CPU architecture. Installation of CentOS 7.5 with 7 Easy Steps CentOS 7.5 can easily be installed on your server machine following the below 8 easy steps. Downloading CentOS 7.5 ISO and making bootable drive Beginning [...]
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OpenVPN Client Configuration in Windows 10/11 | June 29, 2022
OpenVPN is an excellent VPN solution for transmitting data securely over public network. Configuring an OpenVPN Server either on MikroTik RouterOS or Ubuntu Server, we can access local servers or devices from remote place using Windows 10/11, Android or MacOS. How to configure OpenVPN Server in Ubuntu Server was discussed in the previous article. In that article, I also discussed how to create a new OpenVPN client (for Windows OS) who will be able to connect the OpenVPN Server. So, [...]
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MikroTik Radius Configuration with FreeRADIUS | December 7, 2018
FreeRADIUS is a high performance RADIUS suite that provides authentication, authorization and accounting facility for a large number of network devices including MikroTik Router. Although MikroTik has user manager RADIUS service to provide authentication, authorization and accounting facility but it is not free for customization and not suitable for medium to large organization. On the other hand, freeRADIUS is free for customization according to your organization requirements. But freeRADIUS has to be customized by you. In my previous article, I [...]
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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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How to Import SSL Certificate in MikroTik RouterOS | January 16, 2022
SSL/TLS Certificate is used to make secure communication between server and clients. MikroTik RouterOS has a lot of services such OVPN, SSTP VPN, HTTPS, Hotspot and so on those use SSL/TLS certificate. It is possible to create self-signed certificate in MikroTik RouterOS but self-signed certificate faces untrusted CA warning. So, it is always better to use trusted CA either freemium or premium. In my previous article, I discussed how to get a free SSL/TLS certificate from Zero SSL but Zero [...]
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GNS3 Installation and Configuration Step by Step in Windows | September 14, 2018
GNS3 (Graphical Network Simulator) is one of the most popular network simulator software used by hundreds of thousands of network engineers worldwide to emulate, configure, test and troubleshoot virtual and real networks. GNS3 supports a large number of vendors such as MikroTik, Cisco, Juniper, Windows, Linux and many other vendors. GNS3 can be installed on Windows, Linux and MAC Operating System. In this article, I will show how to download and install GNS3 application in Windows Operating System. I will [...]
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MikroTik Blocking Websites with TLS Host Firewall Matcher | April 29, 2019
Most of the websites now use https and blocking https websites is so much harder with the MikroTik RouterOS version less than 6.41. But from RouterOS v6.41, MikroTik Firewall introduces a new property named TLS Host that is capable to match https websites so easily. So, blocking https websites like Facebook, YouTube etc. can be easily done with MikroTik Router if RouterOS version is greater than 6.41. In my previous article, I discussed how to block websites with MikroTik Router [...]
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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 Multiple SSID with Separate LAN and DHCP Server | October 30, 2019
One of the most amazing features of MikroTik Wireless Router is creating Multiple SSID (Virtual AP) on a physical wireless interface. So, creating a Guest WiFi AP with separate LAN block, SSID and DHCP Server is so easy using MikroTik WiFi AP Router. In the previous article, I discussed how to configure MikroTik WiFi Access Point on physical wireless interface with DHCP Server using hAP Lite (RB941-2nD) Wireless Router. In this article I will discuss how to configure a Virtual [...]
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MikroTik Wireless AP Configuration with DHCP using Winbox | October 22, 2019
MikroTik Wireless Router is one of the most popular and stable WiFi Routers. WiFi Zone for an ISP or for an office or for a home can easily be configured with MikroTik WiFi Router. MikroTik has a lot of WiFi Routers that can be used as a WiFi Access Point (AP), a WiFi Station or a WiFi Repeater. MikroTik Wireless Router can also be used as both WiFi Station and WiFi AP simultaneously. The simple usage of MikroTik Wireless Router [...]
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