gdzhu

OpenVPN is a widely used VPN solution. Due to its popularity and the the confidentiality nature, the authority of China started blocking its connection.

Since the content of OpenVPN connection handshake packet is encrypted, we believe that GFW analyzes the packet size/frequency patterns to recognize the connection.

We are trying to find a way to bypass this statistical analyze. We also want to implement a system to filter and modify network packet in real-time.

gdzhu

2015-09-29 23:56:21 -0400

../configure
--build=x86_64-apple-darwin14.5.0
--prefix=/usr/local/Cellar/gcc/5.2.0
--libdir=/usr/local/Cellar/gcc/5.2.0/lib/gcc/5
--enable-languages=c,c++,objc,obj-c++,fortran
--program-suffix=-5
--with-gmp=/usr/local/opt/gmp
--with-mpfr=/usr/local/opt/mpfr

gdzhu

reverse R33-sysupgrade-20180510-910b5192.bin

file

Just to make sure it is a firmware image instead of a zip file:

strings