Help to configure tunnel in OPENVPN

  • Good day to all I have a configuration problem i think that, present mind I have 3 pfsense connected to each other with openvpn in mode site to site
                                                        tunnel ip
                                                      PfsenseB ip                                /
      unix server–----PfsenseA--------
                    \  tunnel ip

    my problem is that when I connect myself to the UNIX server from B or C to UNIX the server sees with the virtual IP segment of the tunnel for example of locacionB and of locacionC and I need that the server sees me with the remote segments of network /24, /24 and /24, exists some rule in firewall that helps me to do this? or some parameter in OPENVPN that I need to enter.