Contd. Blocking VPNs & Circumvention Tools
block access to specific service providers, with Geedge managing a mobile device farm to
install
and
operate
VPN
applications
within
a
controlled
environment.
Additionally,
employees of Geedge Networks appear to possess the capability to create a Wi-Fi network
within
their
office
that
connects
any
device
to
a
customer
network
remotely.
This
functionality allows them to verify that the blocking mechanisms are operating effectively in
real-world scenarios.
Even when TSG is unable to identify the specific application or service associated with a
user’s
activity,
identification,
it
can
the
flag
any
system
can
unusual
be
large
traffic
configured
to
flows
as
suspicious.
block
the
flagged
Following
traffic
this
after
a
predetermined period, for example 24 hours. This approach corresponds to observations of
the GFW, which has been observed similarly blocking any high-bandwidth encrypted traffic
flow after a certain duration, even if it cannot identify the specific nature of the traffic9.
AppSketch is a database that serves as the centralized repository where Geedge creates
profiles for all service providers based on their traffic fingerprints10 allowing clients to more
selectively
approved
block
VPNs
companies
and
or
other
applications
government
such
organizations.
that
they
might
still
AppSketch
makes
it
be
so
used
that
by
those
developing the blocking rules do not need to have deep technical knowledge, meaning that
client
governments
are
able
to
whitelist
certain
companies
to
use
VPNs
and
determine
which VPNs are allowed. As an example, the Cybersecurity Law of Myanmar indicates that
the government of Myanmar maintains a list of companies that can use restricted VPNs and
applications (see full section on Myanmar below).
Geedge
Networks
is
in
the
process
of
developing
a
sandbox
engine
called
AppSketch Works, which is designed to automatically generate application classification
profiles. This kind of product would allow the client to run any application on a phone and
the system would automatically learn how to block it on the network.