Security is always hard work.
Set up OpenVPN on your network. This provides secure access to your network from the internet. This is the recommend way to access the BI PC.
Please read the
IP Cam Talk Cliff Notes and other items in the
IP Cam Talk Wiki. (read on a real computer, not a phone). The
wiki is in the blue bar at the top of the page.
Read
How to Secure Your Network (Don't Get Hacked!) in the wiki also.
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There are two types of VPN, do not get them confused.
The type depends on where the traffic conversation (traffic) originates
1) origination: local home network, destination the internet.
This type of VPN purpose to hides your activity from the internet, it is outbound, it normally costs a monthly fee to use. Direction is from your home PC to the internet, going to your bank, google, porn sites,,,, this not what you want
2) Origination: the internet world wide web, destination: your home network
This VPN type is used to provide a secure connection onto your local network, in bound to you local home network, from your office computer, your cell phone in your car, tablet at the coffee shop.. This is what you want, it does not have a monthly fee and is normally completely free. OpenVPN is this type of VPN.