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 deal with the router that the WAN Port is connected to the DMZ of your Network and the 44 Net will appear on the Lan Port (Referring to a home router)
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