Help to configure tunnel in OPENVPN

[GARED2006]

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 10.87.44.0/24
                                                  PfsenseB ip 192.168.50.0/24
192.168.60.1                                /
  unix server–----PfsenseA--------
                  192.168.60.0/24        \  tunnel ip 10.86.44.0/24
                                                  PfsenseC 192.168.40.0/24

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 10.87.44.0 of locacionB and 10.86.44.0 of locacionC and I need that the server sees me with the remote segments of network 192.168.60.0 /24, 192.168.50.0 /24 and 192.168.40.0 /24, exists some rule in firewall that helps me to do this? or some parameter in OPENVPN that I need to enter.

Regards.