How to access external router via WAN port on rb750

RouterOS General
1

From time to time I need access to our ADSL Modem / Router thats plugged into the WAN port of our RB750 to check for errors etc.

But want to avoid having to plug it directly into my pc each time I need access to it.

How can I gain access to it via the WAN port of the RB750?

ADSL Modem / Router IP: 192.168.0.1
RB750 IP: 192.168.88.1

Thanks

2

Can you put the DSL modem in bridge mode to pass the public IP directly to the routerboard?

3

Unfortunately not as the ADSL Modem / Router in a separate building and being shared by others.

The rb750 is in my building (bridged by 2x Ubiquiti Nano M2’s)

4

You could setup a PPTP-Client on the router and have it establish a connection to another router on the outside. Do you have another router it could connect to?

5

standard adsl modem / router with rj11 or rb750 type with rj45 wan port?

6

Another routerboard? Do you have a central location?

7

central location would be main building where adsl line meets adsl mode / router if i understand the question?

no unfortunately i don’t have another rb750 at the moment

8

  1. add an IP to the wan interface of the RB750 192.168.0.2

  2. add a masquerade rule like this:
    /ip firewall nat
    add action=src-nat chain=srcnat comment=“NAT access to adsl modem” disabled=no dst-address=192.168.0.1 out-interface=ether1
    to-addresses=192.168.0.2


    assuming that your adsl modem is connected to ether1

Nick.

9

Thanks.

To my surprise I’ve discovered that by default I can reach the ADSL Modem / Router in the main house with out making any changes to my RB despite the Modem being on 192.168.0.1/24 while my RB is on 192.168.88.1/24

10

You probably have a masquerade rule with no interfaces specified on it.

That will match your traffic and allow access.

11

Unofficial IRC channel: #routerboard on irc.z.je (IPv4) or 6.irc.z.je (IPv6)

:sunglasses: Thanks