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Firewall
The 4G LTE Broadband Router with Voice firewall determines which Internet traffic is allowed. The
Firewall menu contains the following sections:
•
VPN Passthrough — turns on or off the VPN feature and allows or disallows connected
devices to establish a VPN tunnel.
•
If this is ON (turned on), this feature allows VPN clients to connect through the 4G LTE
Broadband Router with Voice to remote VPN Servers. Normally, this option should be
turned on.
•
If this is OFF (turned off), VPN clients are not allowed to connect.
•
IPv6 Transparent Mode — allows connected devices to be accessible from the Internet.
•
DMZ (IPv4) — If turned on, the connected device specified as the DMZ IP address (DMZ
destination) will receive all traffic which would otherwise be blocked by the firewall. This
may assist some troublesome network applications to function properly, but the DMZ device
should have its own firewall to protect itself against malicious traffic.
