mikrotuk unauthorized access prevent
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Single IP NAT Strategy in MikroTik RouterOS 7
MikroTik Router has a lot of features which help to customize network as our requirement. Sometimes, it may be our requirement that we need to allow internet access on per IP. Normally, when we apply masquerade NAT rule in our MikroTik Router, all private IPs will be masqueraded or a network block will be masqueraded. If we do normal masqurade and enable a DHCP Server in our network, we may face a lot of unauthorized access in our network. Because when a user will be connected in our network, he/she will get internet information (IP, Subnet mask, Gateway and DNS) by DHCP Server and can access internet through our MikroTik Router. So, an unauthorized user can consume our paid bandwidth. Usually we don’t want that any user can access internet through our MikroTik Router without our permission. If we want to prevent unauthorized access in our network, we have to apply a strategy named Single IP NAT Strategy. Single IP NAT strategy will help us to control unauthorized access to our network. If you apply single IP NAT strategy, no IP device can get internet access through our Router until we allow that IP. Single IP NAT Strategy Single IP [...]
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MikroTik Bandwidth and Resource Monitoring with Graphs | January 31, 2018
“Am I getting my committed bandwidth?” is a common question to any network administrator. This question may arise either from your customer or from your owner if you are an employee of any organization. If you feel boring hearing this question and want to establish a system where your customer will be able to inspect his bandwidth usage, MikroTik Graphing is your best friend. MikroTik Graphing can be used to display graphics for traffic which is passed through interfaces and [...]
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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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FreeRADIUS Installation and Basic Configuration on CentOS 7 | November 28, 2018
FreeRADIUS is a modular, high performance and highly customizable open source RADIUS server. Anyone can use FreeRADIUS without any charge and can customize his RADIUS server according to his organizational requirements. In my previous article, I discussed how to install and configure user manager RADIUS server developed by MikroTik. The main disadvantage of user manager RADIUS server is ‘it is not customizable and not suitable for medium or large organization’. On the other hand, FreeRADIUS is giving facility to customize [...]
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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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How to Separate MikroTik Hotspot and DHCP IP Pool | October 9, 2020
MikroTik default Hotspot Setup comes with a DHCP Server (which uses same IP Pool of Hotspot Server) to provide IP address and other network information to a connected device. Using this automatic IP address connected device can access Hotspot login page. After successfully login, a one to one NAT IP address is also assigned for the device and this process happens internally in Hotspot Server. User device cannot know this one to one NAT IP assigning. However, Hotspot Server actually [...]
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Things to Consider When Developing a Mobile App | February 27, 2022
Building a mobile app is one of the best ways to engage your target market and build an audience. If you want to develop a mobile application that will be truly successful, you need to consider every aspect of the development process. At the same time, there are many things to think about when developing a mobile app. Apps are designed to solve problems for people; if you are thinking about creating an app, you need to think about why [...]
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MikroTik Hotspot Configuration with ECMP Load Balancing | September 4, 2021
MikroTik Hotspot is one of the most popular services in MikroTik RouterOS and day be day the demand of Hotspot service is increasing. MikroTik Hotspot can be used in any Airport, Hotel, Restaurant, Campus, Camp, Office or any ISP network. It is also possible to establish a WiFi Broadband Network with the MikroTik Hotspot service. How to configure MikroTik Hotspot was discussed in one of my previous articles. Although MikroTik Hotspot configuration is not so difficult but sometimes we face [...]
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MikroTik VPN Configuration with PPTP (Connecting Remote Client) | August 17, 2016
VPN (Virtual Private Network) is a technology that extends private network across a public network. It enables private network users to send and receive data across public network as if their network devices were directly connected to the private network. There are many VPN services in MikroTik RouterOS 7. Among them, MikroTik PPTP is a mostly used VPN service. It is a client-server VPN technology. So, a user can access server, printer, IP phone and any other network devices of [...]
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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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