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Stop devices from phoning home through router with iptables? (alien.top)

submitted 1 year ago by Clawkikker@alien.top to c/homelab@selfhosted.forum

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I have a router running asuswrt-merlin so I have access to ssh/iptable rules. Is there a way to make a device not able to access an external network or only allow the IP to connect to another IP e.g. 192.168.0.2 -> 192.168.0.3?

I don't have a router/switch with custom vlan capability, so I was wondering is there another way to do this?

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[–] Clawkikker@alien.top 1 points 1 year ago (1 children)

It's like openwrt or freshtomato firmware but specifically for asus routers. Do you happen to know how to do this? I've tried normal rules, but that seems to only apply the router itself rather than the network traffic routing through it.

[–] Sindef@alien.top 1 points 1 year ago

Ah. I'm not sure on that specific setup sorry, but sounds like you may need to check what chains already exist and see if there are ones for the right network interfaces. I'm familiar with IPTables itself only, not the Asus openwrt!