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Thank you for your reply.

All servers place inside data center, data center will provide public dedicated IP and gateway for each server.
Below network diagram we hope to achieve, "Public Server" dedicated IP 172.16.16.101 need to be accessible from the public WAN.

Please suggest the network WAN or LAN to connect my public server to the firewall.
Should we bridge the network from "Public Server" with OPNsense WAN and allow all traffic to pass through the rule?


      WAN / Internet
              :
              : Data Center
              :
       -----+-----
      | Gateway |  Gateway: 172.16.16.1
       -----+-----
              |
      WAN | IP: 172.16.16.100
              |
       -----+------              LAN IP: 10.0.0.1          ----------------
      | OPNsense | -----------------------------------| Local Server |  IP: 10.0.0.2
       -----+------                                                ----------------
              |
              |  WHAT SHOULD WE
              |  CONFIGURE HERE?
              |
      ------+---------
     | Public Server |   IP: 172.16.16.101
      ------+---------   GW: 172.16.16.1

Hi,

We plan to apply OPNsense in a data center in-front of a server, the server have public IP and gateway.
Our server requires to have a public IP address configured in the network card.
Can anyone suggest the network topology to set it up? Using bridge network?

My wish is to just plug in the server (with public IP and gateway configured in the server) into the firewall and the firewall will filter the traffic.

We tested but can't get the server behind the firewall to be accessible from the public.
We configure the server's gateway to be the OPNsense LAN, the server can access the internet but the server can't be access from the public (outside).

Please advice, thanks.