Public Pass-thru Question

[sfrazier]

I have 5 Public IPs that I am paying for each month. The first one is used for everything I do except VOIP. The 2nd IP is used for VOIP. Is it possible to "pass-thru" the Public IP (yet use the filter rules to only allow a few IP's/Ports through to a specific VOIP Server using the same Public IP without using NAT? Since I have a public IP specific for VOIP use will PfSense allow me to use the same Public IP on the other side of my PfSense Router? If so, any any and/or suggestions would be appreciated. I am just learning PfSense and so far I really like it. TIA.

[stephenw10]

If your public IPs are all in the same subnet and that's the same subnet being used by the WAN then you have to use them with NAT.
You can only use public IPs internally if they are routed to you via some other IP.

See: https://docs.netgate.com/pfsense/en/latest/firewall/additional-ip-addresses.html

Steve