HowTo compile OpenVPN + obfuscation with xorpatch on Debian

1. # apt-get install build-essential libssl-dev liblzo2-dev libpam0g-dev easy-rsa 
2. # wget http://swupdate.openvpn.org/community/releases/openvpn-2.3.7.tar.xz
3. # wget https://raw.githubusercontent.com/clayface/openvpn_xorpatch/master/openvpn_xor.patch
4. # tar xvf openvpn-2.3.7.tar.xz
5. # cd openvpn-2.3.7.tar.xz
6. # patch -p1 < ../openvpn_xor.patch
7. # ./configure
8. # ./make
9. # ./make install

You need to put one of the following options in server.conf and client config! 

"scramble reverse" - This simply reverses all the data in the packet. This is enough to get past the regular expression detection in both China and Iran.

"scramble xorptrpos" - This performs a xor operation, utilizing the current position in the packet payload.

"scramble obfuscate password" - This method is more secure. It utilizes the 3 types of scrambling mentioned above. "password" is the string which you want to use.