Yokogawa YFGW710 - Manual (Page 110)

B1-46
IM 01W01F01-01EN
(1) to (6) indicate each of the firewalls. (1) to (5) indicate firewalls related to the field wireless
network.
(1): The firewall between YFGW710 and FCS (ALE111) (Only Modbus/TCP communication
passes through the firewall)
(2): The firewall which allows communication of YFGW710 with FWC, FWMT, OPC server,
PRM, and NTP server to pass through
(3) and (4): Construct IP-VPN between the firewalls and allow communication of YFGW710 with
FWC, FWMT, OPC server, PRM, and NTP server to pass through via the Wide-area Univer-
sal Field Network
(5): The firewall between CENTUM GSGW/PRM server and field wireless OPC server/PRM
field communication server, and DMZ is constructed between CENTUM and YFGW710
The following describes the communication port numbers passed through the firewalls (1) to (5)
in Figure B1-13.
Table B1-4 Communication Port Numbers Allowed to Pass through Firewall
Firewall Port number Purpose Remark
(1) 502/TCP Modbus/TCP Between YFGW710 and FCS
(2)
(3)
(4)
4902/TCP YFGW710
proprietary protocol
Between YFGW710 and FWC/OPC server/PRM
communication server (commDTM)
80/TCP Used between FWC and
YFGW710
Between YFGW710 and FWC
123/UDP NTP time synchronization Between YFGW710 and NTP server
(5) 135/TCP
20500/TCP ~ 20550/TCP
Used for OPC communication Between field wireless OPC server and GSGW
Between PRM field communication server and
PRM server