How to organize a personal file storage with local and remote access with this configuration?

Question

linux

There is a video surveillance system, the scheme is as follows:

LAN - connection in the internal network of the organization, what is there before this connection - I do not know. Internet access is permanent. All ports on the router are busy.
I have a netbook with two gigabytes of memory, an atom in the form of a processor and a terabyte disk. I want to stick it with a personal file server (I don’t see any other use, if someone advises something for this piece of iron at this place, I will be grateful).
I think to stick it like this:

Two questions:
1. Will such a connection be correct, if there are options, how is it better?
2. What software do you need for a netbook? Naturally, he will not have a white IP. You will need access to the file storage from outside and in the local area.

Answer 1

and why do you need to shine your f...garbage in the LAN??
stick better in the internal network. one fih internet will not be thrown to you.
put a teredo in the trash and enter the trash via ipv6.
take a VPS, set up a VPN server on it at the file washer, configure the client for a permanent connection to the server on the VPS, through this vpn go to the file cleaner.
speed in both cases will not be very ....

Answer 2

I have an internal file washer on an Atom D510 with 1 GB of memory, it does quite well.
True, the system on it is already quite old - Debian Lenny.
From the internal grid, the file is available via SMB, OpenVPN is thrown out through the VPS.
So from home I can just go in and take something. Seriously working with heavy files in such a bundle, of course, will not work, but without fish ...