What are the methods of secure data transfer, except for VPN. Is it required for a one-time transfer or for a constant time for a sufficiently large traffic?

Question

VPN

Actually the whole question is in the title.
It is necessary to transfer more than one GB of data, how can this be done?

Answer 1

SFTP is a protocol.

Answer 2

rsync over ssh (as an additional bonus - the ability to continue after losing connection from an interrupted place)

Answer 3

In fact, the question here is not quite the correct use of terms - VPN is a Virtual Private Network, a set of tools for connecting networks or connecting to a remote network. It usually includes some sort of encrypted tunneling protocol, but that's probably not what you mean. =)
Various tunnels are used for secure data transfer. These are application layer tunnels, such as ssh, and protocols, such as ipsec, l2tp, pptp, and many others. There are also specialized protocols such as sftp, ftps, scp, bittorent with forced encryption, etc. that do not need a separate tunnel.
Over tunnels, various file transfer protocols can be used. For example, rsync, which was mentioned above, and which is usually used over ssh, or without it, can be convenient. You can use NetCat(nc) over the same ssh, or dump|restore. You can use any other software that can copy files over the network, even ftp over ssh. =)
Here the choice depends on the platform and what needs to be copied and how ...
The simplest solution will probably be sftp - and there are clients and servers for many platforms, it is simply deployed and configured. For example, under Windows, you can use FileZilla + Filezilla server.

Answer 4

There is a ready-made solution from IBM, but it is paid. The keyword is "Sterling Connect:Direct".

Answer 5

For secure data transfer, in addition to VPN, you can still use IPSec.
stunnel allows almost any channel to make over ssl (if Linux, then the built-in ssh capabilities are enough (port forwarding and sftp).

Answer 6

From a very simple one - an archive with a very complex password and using any available method: bittorent, ftp ... I upload gigabyte videos over an unstable ADSL channel. On the receiving side transmission-cli, I have uTorrent on my desktop. A plus is the loading of a thin outgoing channel, a scheduler, etc. The only thing is that I upload torrents to the server with my hands. But just too lazy to automate. From the server already on YouTube or vimeo script is poured in the blink of an eye.

Answer 7

I would make a TrueCrypt file/container of the required size and transfer it by torrent over a normal connection. The password was transferred to the client by another channel (SMS, Russian Post, Pigeons, Zimbabwe Runner)

Answer 8

scp or rsync - work over ssh

Answer 9

Once upon a time I had to confuse myself as follows.
On the receiving side, there was only Apache + PHP and it was necessary to transfer files over ~ 10G
. To do this, a script was sketched on the same php that cut the files into pieces, encrypted them with blowfish and sent them to the server where they were collected. A crutch, of course, but there were no other options then.