How Does a VPN Protect Me?
A VPN, or Virtual Private
Network, is a fully encrypted and private internet connection via a VPN
provider. I'll look at what protection it offers.
So there’s a lot of talk about using a VPN to hide what we do from
our ISPs, and you’ve mentioned using it when using open WiFi. So just
how and what are the protections of this versus just connecting through
my ISP? What limitations does this have? Can they “see” what I’m doing
(like using a BitTorrent), and that is coming from my account?
A VPN, or virtual private network,
is one approach to securely connect to a remote resource. Depending on
the VPN, that privacy can extend from one end of the connection to the
other, or it can protect you only for a certain portion.
WPA encryption
The traditional approach to protect yourself from open
WiFi sniffing is to use WPA1 encryption built into the WiFi
specification.
This secures the path between your computer and the WiFi’s access
point. Hopefully, it’s how your home WiFi is configured, so as to
prevent nearby homes or others from connecting to your WiFi, and through
it, to your network, without the appropriate encryption password.
There are problems with this approach:
-Most open hotspots at coffee shops, airports, and elsewhere don’t
use encryption; the password requirement would confuse their customers
more than it’s worth. That’s why these hotspots are called “open”.
-When WPA is used, it protects only the connection between your
computer and the WiFi access point. Everything past that point in the
diagram above remains “in the clear”.
That last point becomes important because all the traffic is visible
to the hotspot’s owner, should he or she care to peek, and to
the internet service provider to which that hotspot is connected.VPN download
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