Eurotech ZyWAN, User Manual

Page: 81 / 130

PART 2: SOFTWARE CONFIGURATION
81 110150-1001F
Chapter 6 Networking configuration
The following screen capture shows the Networking tab.
The following items must be configured in order to enable open ports, port forwarding, network address
translation, or NTP services.
Open Ports
Select Yes if you wish to open the ZyWAN firewall to inbound TCP or UDP connections. This applies to any
traffic from other devices that terminates at the ZyWAN, not port forward or NAT traffic.
Note:
The Open Ports section must include UDP port 67 if DHCP Server is used for Ethernet
or WiFi. UDP port 53 must be included if Pass DNS Servers to DHCP Clients is set to
Yes for Ethernet or WiFi.
Any configured ports on the Terminal Server page, GPS UDP, or GPS Terminal Server
ports will also need to have those ports configured in the
Open Ports
page. If not, the
firewall will block those connections.
On the ZyWAN-IDEN models, the IO270 modem firewall is limited to 35 open ports
which can be added based on the ZyWAN configuration, plus the ports 22, 80 and 443
which are added by default.
The following screen capture shows the Networking tab if Open Ports is set to Yes .