Bdtyktl

I have several remote computers running an application.
This application has a backup feature, zipping configurations, the program itself, the database, etc. This file is, let's say, about 500mb.

The remote connection (VPN) is, most of the time, capped at ~400kb/s. Additionally, this connection is rather unstable. It tends to shut down now and then, especially when I take full advantage of the network capacity (e.g. sending a large file).

This means I need a solution to send large files over an unreliable network. Speed is not my major concern. At this time I simply cannot copy the files using Windows, since it will crash and retry indefinitely. The backup is too large and the connection too unreliable.

I looked at several solutions on the Internet, coming up on Rsync and splitting the backup zipfile into smaller chunks.

Also see this question:
Folder transfer over poor sat link

I would like a solution that is:

1. 
   

   Secure

   
   
   

   In the sense that it does not expose a port on the remote machine or create some kind of a backdoor.

   
   


2. 
   

   As native as possible

   
   
   

   I would like to use Windows 10 built-in features - or use tools that are 'as native as possible' e.g. a .NET script or .bat file.