Honeywell EC350 - Preventing Unauthorized External Access Using a Firewall

2 Security Guidelines
2.4 Preventing unauthorized external access using a firewall
Honeywell 2024
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2.4 Preventing unauthorized external access using a firewall
To reduce the risk for your network, we recommend that you use a firewall or another mechanism to
restrict network traffic between the “external” central billing or control system and the “internal” network
of the gas metering systems. Furthermore, EC350 device should only be installed in the gas metering
system, where access control is guaranteed, i.e., protective action is taken to prevent unauthorized
persons gaining access to the device.
We also recommend that you only allow protocols and ports which are actually used for data exchange
with the external network and that these are added, for example, to the firewall’s whitelist.