Setting up a gateway on MikroTik Routers

The MikroTik Routers by default support IP-IP tunneling so setting up a gateway is quiet easy

The mikrotik router is a very powerful device and there are a lot of options that can be used

The example here will show the router that the WAN Port is connected to the DMZ of your Network and the 44 Net will appear on the Lan Port (wan and lan Referring to a home router model)

The configuration can be done with the web interface (webFig) or in manual text command with telnet or SSH connection to the router

First a tunnel interface must be created to the Main AMPRNet router

You do it in the web by this : interfaces ---> add new --> IP tunnel a Screen will open

Change the name to say UCSD

add in the local address your router address on the DMZ (in home it will probably be 10.0.0.x or 192.168.1.x)

at the remote address put the address of the AMPRNET router (169.228.66.251)

Press the apply button and you are done

The Command in command line interface (via Telnet ot SSH) is as follows

/interface ipip
add allow-fast-path=no !keepalive local-address=10.0.0.180 name=UCSD \
   remote-address=169.228.66.251

Now some routes commands needed to be done

1) Route all the traffic to the tunnel interface

You do it by : IP --> Routes and clicking on the 0.0.0.0 line and changing the gateway to the tunnel interface name and clicking apply

The command line in text is as follow

 /ip route
add distance=1 gateway=UCSD

2) route command for the tunnel to go to the InterNet

You do it by the web as follows : IP ---> routes ---> add new

at the screen , type in the destination address 169.228.66.251/32 and at the gateway type the ip address of the next router (for home network it is usually 10.0.0.138 or 192.168.1.1)

The command line is as follows

/ip route
add distance=1 dst-address=169.228.66.251/32 gateway=10.0.0.138

Now you should have connectivity from your 44 Net to the rest of the world (but not to any other 44 net networks worldwide )

In order to have a full connectivity to the other 44 Net networks a tunnel (and corresponding route command) must be added for every 44 Net gateway

The MikroTik have ability to run an automatic script that deal with the routing to the rest of the AMPRNET networks

The script run inside the router and take care of all the routes

In general it listen to the routes advertisements send from the AMPR.ORG main router and translating it to routes commands to the router

The Script can be found here http://www.yo2loj.ro/hamprojects/ampr-gw-2.0.rsc

The Commands to run it can be found here http://www.yo2loj.ro/hamprojects/ampr-gw-README.txt