Dota 2 uses 27015 by default for both TCP and UDP protocols. MikroTik routers are typically used for network management and routing. This would make the configuration a bit different; let’s find out:For Dota 2 on a MikroTik router, you’ll need to access the router’s management interface and then do the following:Open your web browser, enter your MikroTik router’s IP address in the address bar, and log in.Navigate to the “IP” menu and select “Firewall” from the sub-menu.Tap the “NAT” tab in the Firewall settings>Add new rule.In the “General” tab, write “Dota 2 Port Forwarding.”In the “Action” field, select “dst-nat” to perform destination network address translation.Select TCP or UDP port depending on your preference, or choose “both”.In the “Dst. Port” field, enter the Dota 2 port number, typically 27015.In the “In. Interface” field, select the interface that connects to your Dota 2 game server or the device running Dota 2.In the “Dst. Address” field, enter the IP address of the device running Dota 2.Click on the “Action” tab.In the “Action” field, select “dst-nat.”In the “To Addresses” field, enter the IP address of the device running Dota 2.You’re good to go.