When you are on passage, you may need Internet access to download essential weather data and use your PredictWind apps only, while avoiding unnecessary data use from other devices and apps on board.

If you connect all your devices to DataHub Wi-Fi, then PredictWind Mode lets you do this with one setting, in one click.

PredictWind Mode is a firewall that allows supported PredictWind apps and DataHub services to use the Internet while blocking other Internet traffic.

When enabled, supported PredictWind apps and DataHub services continue to work while the DataHub Firewall blocks other Internet traffic routed through the DataHub.

When PredictWind Mode is enabled:

Supported PredictWind and DataHub services continue to work, while general Internet traffic such as web browsing, streaming, cloud syncing, software updates, and other background traffic is blocked. Local network devices and the management page of a directly connected upstream router remain accessible.

Your phone, tablet, or computer may report No Internet Connection, Limited connectivity, or similar while still remaining connected to the DataHub Wi-Fi. This can be normal when PredictWind Mode is enabled.

These services still use your Internet connection normally. PredictWind Mode does not apply to them.

Maps and charts in PredictWind apps continue to work. Panning, zooming, downloading forecasts, and other normal app activity can still use a meaningful amount of data.

PredictWind Mode is most useful for reducing unrelated background use such as:

If you use PredictWind apps extensively, that traffic still uses your Internet connection at its normal rate.

PredictWind deliberately blocks embedded webcams and video content because video can consume large amounts of data. This includes PredictWind webcam content delivered through services such as YouTube or other video-hosting platforms.

You can add your own domains to the PredictWind Mode whitelist.

This may be useful if you want to allow a service such as WhatsApp, Microsoft Teams, Slack, or webmail while blocking other Internet traffic.

Adding example.com also allows its subdomains, such as www.example.com.

Your custom whitelist is saved when you turn off PredictWind Mode and will be used again the next time you enable it.

Disabling PredictWind Mode deliberately returns the DataHub firewall to:

Normal Internet access is then restored, subject to any restrictions imposed by the active Internet connection, modem, SIM plan, or upstream firewall.

This is expected because phones and tablets perform their own Internet connectivity checks. PredictWind Mode prevents some of these checks, even though supported PredictWind and DataHub services continue to work.

Keep the device connected to the DataHub Wi-Fi.

If you previously told your phone not to use the DataHub Wi-Fi because it reported no Internet connection, you may need to forget the DataHub Wi-Fi network and rejoin it.

On the affected device:

If the device previously rejected the Wi-Fi network because it reported no Internet connection, forget the network first, then join it again.

No.

PredictWind Mode is a firewall. It blocks unrelated Internet traffic but does not compress or reduce data transferred by allowed services.

If you download forecasts, browse maps, pan and zoom charts, or otherwise use PredictWind services extensively, that traffic still uses your Internet connection normally.

No. Block WAN and PredictWind Mode are mutually exclusive.

PredictWind Mode automatically applies the firewall policy required to block other Internet traffic while allowing supported PredictWind and DataHub services.

Both firewalls apply, with the more restrictive rules determining what traffic can pass.

For example, an Iridium GO exec applies its own firewall rules closer to the Internet connection. If the GO exec firewall is more restrictive than PredictWind Mode, the GO exec rules take precedence.

Disabling PredictWind Mode does not override firewall restrictions applied by the Internet device itself.

No. Custom whitelist entries remain saved and are used again the next time PredictWind Mode is enabled.

No. PredictWind Mode is designed to reduce normal and accidental Internet data use. It is not a data quota or zero-data guarantee.

Supported PredictWind services, DataHub services, and anything you add to Whitelist Domains can still use data.

Firewall changes can also take a short time to take full effect.

If supported PredictWind services still work, this can be normal. Remain connected to the DataHub Wi-Fi.

If the device has stopped trying to use the DataHub Wi-Fi to access the Internet:

Your device may have cached a DNS response from when PredictWind Mode was enabled.

If it is not one of the supported PredictWind or DataHub services, PredictWind Mode will block it unless you add its required domains to Whitelist Domains.

Check the service provider's documentation for all required domains, then add them under: Services > Settings > Firewall > Whitelist Domains.

The service probably uses more than one domain. Check which domains the service requires and add each required domain to Whitelist Domains.

Check the firewall settings on the upstream Internet device. PredictWind Mode cannot override a more restrictive firewall configured on the modem or Internet service.

Supported services listed in this article should work with PredictWind Mode.

Confirm that:

If the problem continues, contact PredictWind Support.