Hello @Neziak,
There are thousands of Peplink/Pepwave devices deployed around the world that only have a connection via some form of low bandwidth &/or high latency connection, such as experienced through Satelite providers.
The firewall rules are very customisable, and the MAX Transit series also comes with some good content filtering.
Where are you based, you local Peplink Partner (who we hope you brought the device through) will be able to guide you.
Happy to Help,
Marcus 