to Block IP address in MikroTik Router, follow below steps:
Step 1: At first, we should log in to the MikroTik router OS. Open router login page (use winbox or web access), enter IP address, username, and password, and click connect. ( as shown below )
Step 2: In opened windows, click on “IP” menu and select firewall in submenu. Select the first tab named as “Filter Rules”.
Note: when list is empty, all IP and networks can access the router. If you add only one rule, all traffic will be re-arranged based on this rule.
Step 3: Click on add (blue plus item) to insert a new rule. In the opened window, you can identify the properties of the rule. Click on the General tab to define the general specification of the rule. In “chain” drop-down list you can select the type of traffic. It is input or output or even forwarded. Then enter the source address or destination address of traffic packets. These two steps are enough to define a basic rule and you can select other properties like protocol or source port and destination port.
Step 4: Then go to “action” tab to select what the router will do with this traffic. Select the options which are available in the action drop-down list. Select 'drop' to deny the traffic or select 'accept' to allow the traffic.
MikroTik Router has many utilities to configure and manage the network, in this article you have found how to block IP address in MikroTik router to block access of that IP address to your network. for example with this tutorial, you can block all unwanted network access to your company network with the MikroTik server.
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