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19.7 Legacy Series / 3 WAN interfaces, 3 IPs, same gateway
« on: February 01, 2020, 06:02:28 pm »
Hi,
- I have three static IP's from my provider, all with the same gateway.
- I have three network cards
- Each card gets an IP.
- I can't set the gateway on two of the cards, so I leave it at auto-detect
Traffic flows fine on the WAN interface, but I can't get traffic on the other two. I can ping and traceroute from them, but a web server (with a NAT rule) behind the firewall never connects.
It was working fine when I had all three IPs attached to the same network card, but that requires a special config on my providers part (they need to multi-home to the same MAC address). I decided not to use that because their multi-home config stopped working for a day, and took me offline.
My question: Is it possible to have three network interfaces, different IPs, same gateway, configured and working? If the question is yes, I don't know what I'm doing wrong.
I think what is happening is OPNSense is responding from the default IP instead of the interface the request came from, but I'm not sure.
Thanks,
Gerald
- I have three static IP's from my provider, all with the same gateway.
- I have three network cards
- Each card gets an IP.
- I can't set the gateway on two of the cards, so I leave it at auto-detect
Traffic flows fine on the WAN interface, but I can't get traffic on the other two. I can ping and traceroute from them, but a web server (with a NAT rule) behind the firewall never connects.
It was working fine when I had all three IPs attached to the same network card, but that requires a special config on my providers part (they need to multi-home to the same MAC address). I decided not to use that because their multi-home config stopped working for a day, and took me offline.
My question: Is it possible to have three network interfaces, different IPs, same gateway, configured and working? If the question is yes, I don't know what I'm doing wrong.
I think what is happening is OPNSense is responding from the default IP instead of the interface the request came from, but I'm not sure.
Thanks,
Gerald