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OPNsense Forum

English Forums => General Discussion => Topic started by: spetrillo on January 03, 2025, 01:55:57 AM

Title: OPNsense Behind an ISP Router
Post by: spetrillo on January 03, 2025, 01:55:57 AM
Hello all,

I am building an OPNsense two node cluster. Each node will be connected to my ISP router. The internal network of the ISP router is 172.16.2.0/24. I have setup the nodes to have hard IPs of 172.16.2.3 and 172.16.2.4, with the VIP being 172.16.2.2. The gateway is 172.16.2.1. Is this a doable config or am I better off connecting the WAN side connections to a switch, and then a third switch connection up to the router?

Thanks,
Steve
Title: Re: OPNsense Behind an ISP Router
Post by: Patrick M. Hausen on January 03, 2025, 08:48:38 AM
If the ISP router has multiple internal ports, there is most probably a switch built in, so why introduce another single point of failure?
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