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Router behind a Router but secure First devices

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#1 rrrikin


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Posted 17 September 2016 - 04:44 PM

 Hello all,
I do not know lot about networking but learning slowly so this might be a stupid question but here is my dilemma. 
I have a router 1, set to LAN IP and it has DHCP for LAN to 192.168.1.xx
I have another router that is behind Router 1 which's Internet IP is, Gateway is to get to the internet. 2nd router also have devices so the LAN IP is 10.0.0.xx
I want the 2nd router and its devices to isolate from having access to 192.168.1.xx., how can I do that?
With this setup this is what i observe, If my ip is then i have access to 10.0.0.x and ALSO 192.168.1.x. But if i am then i only have access to 192.168.1.x and not to 10.0.0.x which is ok and i understand that router 2's firewall is blocking it. 
However, my main concern is how to block the traffic of router 2 from seeing any device of router 1 (192.168.1.x)
Attached is the screen capture of the setup
Possible solution is to setup setup some forward rule? or restrict Router to different subnet and how?
Any help will be appreciated, Thank you

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#2 Wand3r3r


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Posted 18 September 2016 - 11:13 AM

One option is if your switch is a managed one.  You can do a vlan for that router connection to the internet router


" i understand that router 2's firewall is blocking it."


not usually the case.  There are two reasons; 1: no route to the 2nd routers wan interface, 2: only one gateway and its not the wan ip of the 2nd router

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