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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    Create System Restore Point in Windows OS |   August 27, 2015

    System Restore utility in windows operating system helps a windows user to take one or more snapshots of his/her windows system when windows operating system is working well. If any system crash occurs in future due to virus attack or critical system update or any unwanted program, the system can be reverted to its previous snapshot when windows OS was working well. So, System Restore utility in windows operating system is a very helpful service for windows users to protect [...]

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    MikroTik OpenVPN Configuration on TCP Port 443 with Windows OS |   April 6, 2020

    MikroTik OpenVPN is an amazing VPN solution. IT provides a secure and encrypted VPN tunnel across public network. Unlike PPTP and L2TP VPN Services which are poorly designed and can easily be blocked, OpenVPN can highly be customized and even can be run on so popular TCP Port 443. So, OpenVPN cannot easily be blocked. OpenVPN uses SSL/TLS Certificates. So, OpenVPN Tunnel is a trusted tunnel to send and receive data across public network. OpenVPN is a site to site [...]

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    Block Internet Access at a Certain Time in MikroTik RouterOS |   August 1, 2024

    We often find how to block or allow internet access at a certain time in our LAN network specially in WiFi network. Time based internet access is so useful for controlling Kids internet in any family or managing stuff internet accessibility in any office or other network. MikroTik RouterOS offers a feature named Kid Control to block internet access at a certain time. This feature is so useful for the parents or network engineers who want to block internet access [...]

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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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    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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    Enable F8 Menu to Enter Safe Mode in Windows 8 & 10 |   August 27, 2015

    Windows is the most popular operating system in the world. No computer user can go a single day without windows operating system. As windows is a popular operating system, it has a lot of viruses also. But windows provides various tools for removing these viruses. For removing any unwanted program, windows safe mode is a best option. A popular way to open windows safe mode is windows Advanced Boot Options. Advanced Boot Options provides different run levels for windows users so [...]

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    NGINX Web Server Installation and Configuration in Ubuntu |   September 7, 2024

    NGINX is a feature rich and high-performance software which is mainly used for Web Server. NGINX can also be used as a proxy server, load balancer, mail proxy and HTTP Cache Server. NGINX is a free and open-source software and can be run on Linux, Windows. macOS and other operating systems. NGINX is a single-thread based application. So, it can handle unlimited client requests using asynchronous technique. NGINX processes highly efficient run loops in a single-thread process called workers. Workers accept [...]

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    Securing MikroTik Router with Port Knocking |   March 21, 2021

    MikroTik Port Knocking strategy helps to protect MikroTik Router from hackers and unauthorized access as well as enhances MikroTik RouterOS security.

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    Web Server Configuration in Linux with Apache, MariaDB and PHP |   January 2, 2018

    Web Server is one of the most important and most used servers today. Without web server internet cannot imagine. Even, the article you are reading is also served by a web server. So, having web server configuration knowledge is beneficial for you, I think. A web server is responsible to serve HTTP (Hypertext Transfer Protocol) contents such as text, image, audio, video etc. to its clients. A lot of web servers are present today such as Apache, IIS, Nginx and [...]

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