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17.7 Legacy Series / OPNsense behind ISP router with NAT
« on: December 31, 2017, 06:35:54 pm »
I have struggled to get my head around OPNsense which I am looking at for routing between subnets and controlling access to Internet.
I have eventually got a subnet on the inside accessing the internet and to another inside subnet.
Now I want to remove the NAT going out to the WAN since the WAN connects to an ISP router also doing NAT. So I turn off outbound NAT.
I now cannot get to the Internet. I cannot ping the ISP router.
I was wondering whether issue is routing so added RIP for all subnets. Do I have to manually add a route onto the ISP router to say go to my OPNsense box for the following subnets ... . Or is it something else I am doing? Any help or examples or documents explaining this process would be welcomed.
Thank you,
Peter
I have eventually got a subnet on the inside accessing the internet and to another inside subnet.
Now I want to remove the NAT going out to the WAN since the WAN connects to an ISP router also doing NAT. So I turn off outbound NAT.
I now cannot get to the Internet. I cannot ping the ISP router.
I was wondering whether issue is routing so added RIP for all subnets. Do I have to manually add a route onto the ISP router to say go to my OPNsense box for the following subnets ... . Or is it something else I am doing? Any help or examples or documents explaining this process would be welcomed.
Thank you,
Peter