two mikrotik behind linksys router modem ADSL

RouterOS General
1

Dear All,

I have two mikrotiks RB750Gr2 and RB750Gr3, one for each client. They will be behind linksys router modem which connect to internet using ADSL (I have static IP for the internet connection).

Both mikrotik will be mostly using default settings. Both have 192.168.88.x network, but the external IP are 192.168.1.110 (RB750Gr2) and 192.168.1.111 (RB750Gr3).

My problem:

  1. From my pc that connect to the network using wifi (IP: 192.168.1.73) I can ping both 192.168.1.110 and 192.168.1.111, but cannot connect using winbox or web browser to 192.168.1.110 but work ok for 192.168.1.111.. Can someone explain why and show the settings I need to do?

  2. Since both mikrotik should be connected using VPN, I enable dydnds in ip → cloud. for mikrotik with IP 192.168.1.110, I can setup VPN without problem. Clients can connect to this mikrotik. With additional Single Port Forwarding rule for port 1723. However, I cannot make the mikrotik with IP 192.168.1.111 to work. Locally, when using vpn client and connecto vpn server 192.168.1.111, it works but using mikrotik dyndns (xxx.sn.mynetname.net), it did not work. Even, when the dyndns name being accessed in browser or winbox, cannot connect. Even when I take off the 192.168.1.110 mikrotik and change Single Port Forwarding rule for port 1723 to IP 192.168.1.111, still not working, can someone help on the setting?


    Thank you very much in advance.

Daniel

2

Easy:

Make a backup from one device, and load the backup into the other one, since they are the same.

But before you do, disconnect the other from the network. Once that configuration is loaded, change the IP to 192.168.1.111, and you are done.

3

Keep in mind that the backup will work only in the same device (because MAC addresses included) and in same ROS.
The best way is to make an export from one device and import the file to the other device.
Then change the IP to 192.168.1.111 as haik01 said.

4

Dear All,

Thanks for the replies.

I did exactly the backup from the working one and moved to the other router and restore, boom, my RB750Gr3 cannot be accessed ;( I need to reinstall using netinstall in RB750Gr3. Probably, as you said that backup and restore only works on the same device.

I tempted to try the import/export, but suddenly I realized that maybe the problem is not with the mikrotik but the dyndns. Can one IP public being shared by two xxx.sn.mynetname.net? This came up since I tested and the second mikrotik (RAB750Gr3) xxx.sn.mynetname.net was not recognized. tried hostname to ip also said not known.

Logically, I can have more than one server name pointing to the same IP address in apache2 using redirection. but not sure with mikrotik dyndns.

I think the problem is with the dyndns since I can have vpn access to the 192.168.1.111 router if I set the client to connect to the IP public.

In addition, if mikrotik behind ADSL modem, and the mikrotik is using dyndns xxx.sn.mynetname.net, should I open any port in the ADSL modem?

TIA

Daniel