Two routers sharing internet but isolated from each other

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brunoamb

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Oct 25, 2017
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I have a router (192.168.6.1) that is connected to the internet modem. One of its LAN ports is connected to the WAN port of another router (192.168.0.1).

I can access the internet on the second router without any problem. But the 192.168.0.1 subnet can "see" (ping) the 192.168.6.1 subnet (the opposite does not occur).

How can I isolate 192.168.0.1 subnet too? Is it possible?

Thanks in advance.
 
Solution
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The only simple way would be if the router that is using 192.168.0.x addresses has the ability to firewall/filter traffic. You should be able to put in a rules that blocks all traffic to 192.168.6.x ip addresses. In general you can block the complete subnet the router is smart enough to still send traffic to the main router even though it has a ip in that range.
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bill001g

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Aug 9, 2012
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The only simple way would be if the router that is using 192.168.0.x addresses has the ability to firewall/filter traffic. You should be able to put in a rules that blocks all traffic to 192.168.6.x ip addresses. In general you can block the complete subnet the router is smart enough to still send traffic to the main router even though it has a ip in that range.
 
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brunoamb

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Oct 25, 2017
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510


Thanks for the answer. The 192.168.0.1 router is a D-Link DIR-810L, it has firewall settings like SPI, anti-spoofing, DMZ and an inbound filter. Is some of these options important or do I need something more (like an outbound filter)?
 
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