graphical network simulator
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GNS3 Installation and Configuration Step by Step in Windows
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 also show how to configure a basic network in GNS3 that will communicate with the real networks. GNS3 Download for Windows Operating System GNS3 is completely free and open source software. So, it can be downloaded from its official website without any charge. In GNS3 official website, the installation file is found for major three operating platforms (Windows, Linux and MAC). The following steps will show how to download GNS3 installation file (.exe) for Windows Operating System. Go to GNS3 official website (gns3.com) from your favorite web browser. You must Sign Up and Login before any download. So, Sign Up and Login with your personal information. Now click on DOWNLOAD menu item. GNS3 current version (now it is 2.1.9) information [...]
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CentOS 8 Installation with Screenshots (Server with GUI) | November 21, 2020
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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MikroTik Router Static DHCP Server Configuration | October 25, 2015
DHCP Server assigns IP address and other related IP information (Subnet mask, Gateway and DNS) automatically to network devices. But automatic DHCP Server has some disadvantages too. If any IP device connects to any automatic DHCP network, the device will get an IP address and related IP information automatically by the DHCP Server and the device will start to use resources of this network. In this situation, the network administrator cannot know who is being connected to the network and [...]
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HTTP vs. HTTPS: The Impact Of Using SSL Certificates | November 29, 2021
Google and cybersecurity experts continue to make clarion calls to web admins and website owners to switch from HTTP to HTTPS. But is there any difference between the two other than the extra “S” at the end of HTTPS? Not everyone understands the differences between HTTP and HTTPS and why the difference is so significant. In this post, we will discuss the differences between HTTP and HTTPS, the reasons why you need to switch from HTTP to HTTPS, and the [...]
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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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Internet Content Filtering in MikroTik Router using OpenDNS | August 22, 2024
Internet content is always not safe for our work or home network. We always face malware, phishing and adult content which are harmful for office or home internet. Using web content filtering software, we can easily get rid of this harmful content. OpenDNS is a cloud-based internet content filtering solution that helps to keep our office or home internet free from malware, virus and adult content. Configuring Free OpenDNS Home Internet feature with our Home WiFi Router, we can easily [...]
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How to Add New Domains to BIND DNS Server | July 5, 2019
DNS (Domain Name System) Server is an essential part to any computer network. So, it is always suggest keeping a DNS Server in every network. How to configure a DNS Server with BIND package was discussed in my previous article. A common question among the fresher admins of BIND DNS is how to add a new domain to BIND DNS Server. For this, this article is designed to discuss the proper way to add multiple domains to BIND DNS Server. [...]
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Latest Google Chrome Free Download and Install | August 23, 2015
Google Chrome is one of the most popular web browsers to any online user. Google Chrome is a free application by Google. So, you can download and install Google Chrome in your operating system at any time. Google Chrome is too easy to use and bug is so less. Google Chrome has an awesome look and a lot of functionalities which help to use Google Chrome so easily. It is said that any online user cannot go a single day without Google [...]
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How to Install VMware ESXi VMvisor on VMware Workstation | December 28, 2020
There is no doubt that VMware vSphere is the pioneer in virtualization world. Day by day IT infrastructure is converting to virtualization where VMware vSphere is providing more features than any other virtualization software. VMware ESXi is the foundation of VMware vSphere. VMware ESXi is a bare metal hypervisor. So, a physical server is required to install VMware ESXi. Physical servers are usually costly and beginners or researchers cannot always arrange such a high priced physical server to install ESXi [...]
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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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