"translator" of files?

Question

Information Security

Hello.
Help, please, with the decision. You need a "file translator". Perhaps you know a ready-made solution or vendor? So far, the following solution comes to mind: between networks we put a firewall that connects to the sandbox, set the sandbox on folder A to form a hash of legitimate files, with a script once a period we scan the difference between folders A and B and copy the difference if there is a hash on the firewall file, then it will pass it, if not, it will either be discarded based on data from the sandbox or (if a new file) it will be re-checked.
Thank you!

Answer 1

It's not at all clear.
First, we find out what are the two storage locations for files between which these files need to be transferred. It would be nice to understand why they are stored there at all - maybe it should not be stored in a file.
Then we find out why you can’t transfer files directly between storages, but you need to pervert with a firewall. It seems that here it is necessary either to persuade the firewall not to block the transfer of files; or build a VPN tunnel.
We also find out which operating systems are on both storages.
In general, it seems that the functionality you need is already in the rsync program (it comes from Unux, there is a port for Windows).

Answer 2

I described the problem a little incorrectly, I'll try to clarify:
There are two networks - public and internal (secure). Access to storages is possible by various methods - FTP, NFS. Data type - unstructured data of various types.
There is a task to link two file storages in order to transfer / synchronize new files from a shared network to an internal one with a run through the sandbox to check for malware