This document provides instructions for configuring a MikroTik router to share a single internet connection among multiple local computers using network address translation (NAT). It describes how to configure the WAN and LAN interfaces, set up DHCP and DNS servers, enable NAT and firewall rules to masquerade the LAN IP addresses, and limit bandwidth to 10kbps per device on the LAN. The configuration shares an internet connection from a WAN IP to a LAN with IP range 192.168.0.0/24 while restricting bandwidth using queue types and simple queues.

1. Cable setup
basic configuration mikrotik
first of all setup all the ports case of dynamic ip (emulation router linksys generic)
ip-- dhcp client add eth3 (write port ip address you wish)
go to bridge tag bridge add one
bridge --- ports add eth1 add eth2 add wlan
ip--- dns add one write ip of dhcp then go to setting write dns1 200.42.0.111
ip --- address add 192.168.1.1/24 IMPORTANTE /24 select bridge at interface
ip dhcp server click on dhcp setup dhcp server interface BRIDGE dhcp address space
192.168.1.0/24 gateways for dhcp network 192.168.1.1 address to give out 192.168.1.2-
192.168.1.254 dns 1 200.42.0.111 dns 2 200.42.0.109
ip ---- firewall add one rule chain SRCNAT out interface ETH3
ACTION masquerade
Basic Internet Sharing with Bandwidth Limiting
This tutorial explains how to configure a router to share a single Internet connection (WAN) among
multiple local computers (LAN) using NAT.
First we will configure interface that is connected to WAN.
/ ip address add address=192.168.1.20/24
network=192.168.1.0 broadcast=192.168.1.255
interface=ether2
Now one interface is configured and connected to WAN (with ip 192.168.1.20/24). Now we will
configure second interface for our Local Network.
/ ip address add address=192.168.0.1/24
network=192.168.0.0 broadcast=192.168.0.255
interface=ether1
Now we will configure DHCP using WinBOX, download Winbox from http://www.mikrotik.com and
login to you MT Router. Then goto IP > DHCP-Server, now press Setup Button, then you will see a
similar window as shown below. Just select the interface that you have configured for your Local
Network (as in our example it is ether1), now just press Next till the end of setup.

2. Now we will configure DNS for our local network. Goto IP > DNS, press Settings button then add you
Primary and Secondary DNS Server IP as provided by your Internet Service Provider. Also make
sure that you select "Allow Remote Requests", so that you can give your MT Router's IP as a DNS
Server to your Clients. Then Apply and OK.

3. Now we will configure NATing for our Local Network. Goto IP > Firewall, goto NAT table press the
plus sign which will allow you to add new firewall rules. Select chain=srcnat, then set Src.
Address=192.168.0.0/24 (ip range of your local network), then select Out.Interface=ether2 (interface
connected WAN), as shown below.

4. Now goto Action Tab in the same window, then select Action=Masquerade, then Apply and OK.

5. Now we will setup Bandwidth restriction (10kbps per IP in 192.168.0.0/24 range). Goto Queues, then
goto Queue Types, then press the plus sign to add a custom Queue Type. In the name field enter
your desired name, select kind=pcq. As shown below.

6. Now goto Settings Tab in the same window, and enter the Rate to 10000 (i.e equal to 10kbps), also
select Dst. Address, as shown below.

7. Now for Upload limit repeat the same procedure to create another Queue Type name it something
different and in the Settings Tab instead of selecting Dst. Address this time select Src. Address.
Apply and OK
Now in the Queues window goto Simple Queues Tab, and add a new simple queue by pressing plus
sign. Enter your desired name, then add a Target Address=192.168.0.0/24 the IP Range of your
local network.

8. Now goto Advanced Tab in the same window and in Queue Type in the Target Upload select the
Queue Type that we created before for upload restriction purpose, do the same for Target
Download. As shown below. Press Apply and OK.

9. As per the steps shown and performed, you should now have an up and running MT Router, that will
serve Internet Service to local network with IP Range 192.168.0.0/24 that will be given by the DHCP
Server.
Hope this will help out many people.
Created by Mudasir Mirza
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