introduction to mikrotik firewall

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  • MikroTik Firewall Basic Concept

    MikroTik Firewall functions as a network security tool for preventing unauthorized access to networks as well as provides Network Address Translation functionality. So, a network administrator who is using MikroTik Router in his network cannot go a single day without MikroTik Firewall. Actually, the main duty of a MikroTik administrator is to maintain Firewall properly along with Bandwidth management after completing MikroTik Router basic configuration. So, a MikroTik administrator should have enough knowledge on MikroTik Firewall and so this article is designed to discuss the basic concept on MikroTik Router Firewall. MikroTik Firewall MikroTik Firewall mainly filters good traffic or bad traffic and according to the definition of firewall it should allow good traffic and reject bad traffic. This good and bad traffic is doing one event among the following three events in MikroTik Router. Either the traffic is entering to MikroTik Router, The traffic is leaving from MikroTik Router or The traffic is passing through MikroTik Router. MikroTik administrators like you and me always expect to get good traffic entering to and passing from our MikroTik Router. But the fact is not like so always. We have to always fight against bad traffics. When a local network is connected [...]

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    MikroTik DHCP Server Configuration with Radius Server |   January 24, 2018

    The Dynamic Host Configuration Protocol (DHCP) is a client-server protocol that is used to assign an IP address and other network configuration parameters dynamically to each device on a network so that they can communicate with other IP networks. DHCP Server is popularly used in an Enterprise Office Network because in an office network various types of IP devices such as Laptop, Desktop, Tablet, Smartphone, IP Phone and so on are maintained and almost all IP devices support DHCP. An ISP Network can also be [...]

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    MikroTik PPPoE Setup with Radius Server Prepaid Billing System |   December 23, 2017

    MikroTik PPPoE Server is popularly used in ISP Companies to maintain user connection. Along with MikroTik PPPoE Service it is a better idea to make a prepaid billing system with Radius Server. MikroTik User Manager Radius Server is a user authentication and accounting application that gives the ISP Company ability to manage PPPoE user’s connection with proper bandwidth management as well as their prepaid billing system with scratch card. So, any ISP Company can turn a smart network system with [...]

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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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    Apache2 Web Server HTTPS Configuration on Ubuntu Server |   August 15, 2021

    Data transmission between web server and web client over port 80 (HTTP) is not encrypted. So, any middle man between web server and web client can view transmitted data and can steal secret information. To overcome this limitation, HTTPS Protocol over port 443 has been introduced. HTTPS is a secure web server that is configured with SSL/TLS certificate. TLS (Transport Layer Security) and its predecessor SSL (Secure Sockets Layer) are web protocols used to wrap normal traffic in a protected, [...]

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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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    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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    NGINX and PHP-FPM: A High-Performance Web Hosting Duo |   September 26, 2024

    When it comes to hosting high-performance websites or web applications, Nginx and PHP-FPM are often paired together due to their complementary capabilities. NGINX is a highly efficient web server which works seamlessly with PHP-FPM. PHP-FPM is a FastCGI Process Manager for PHP that is used to deliver fast, reliable, and scalable solutions for dynamic content. What is Nginx? Nginx (pronounced as “engine-ex”) is a lightweight, high-performance web server that is widely used for serving static content, load balancing and reverse [...]

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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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    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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