In Unix and all Unix-like systems, \n is the code for end-of-line, \r means nothing special. However in Windows (and many old OSs), the code for end of line is 2 characters, \r\n

For the file created on any Unix system, the end-of-line code is not work opening via notepad on Windows. Replace the code \n to \r\n on notepad++ to solve this problem.

Install SS server in a easiest way on a Windows platform machine.

1. Download & Install Python 3.4.3 –
   https://www.python.org/downloads/windows/
2. Add C:\Python34\Scripts in the Environment Variables
   
3. Download & Install OpenSSL
   – https://slproweb.com/products/Win32OpenSSL.html
4. Open CMD enter “pip install shadowsocks”
5. Create a text file under C:\Python34\Scripts\config.json
   {
   “server”:”0.0.0.0″,
   “server_port”:8388,
   “local_address”:”127.0.0.1″,
   “local_port”:1080,
   “password”:”your_password”,
   “timeout”:300,
   “method”:”aes-256-cfb”,
   “fast_open”:false
   }
   The following table explain the parameter.

   Name	Explanation
   server	the address your server listens
   server_port	server port
   local_address	the address your local listens
   local_port	local port
   password	password used for encryption
   timeout	in seconds
   method	see Encryption
   fast_open	use TCP-Fast-Open, true / false
   workers	number of workers

6. Use command ssserver -c “C:\Python34\Scripts\config.json” to launch the server.

There are such a lot of VPN method to by-pass the great firewall in China. Somehow China government keep enhancing their great firewall system, some of the district or ISP in China can’t even get through PPTP, L2TP and even OpenVPN now.

Shadowsocks – an open-source proxy project, widely used in mainland China to circumvent Internet censorship.

1. Server Installation process in Linux:
   wget --no-check-certificate https://raw.githubusercontent.com/teddysun/shadowsocks_install/master/shadowsocks.sh
chmod +x shadowsocks.sh
./shadowsocks.sh 2>&1 | tee shadowsocks.log
2. Then follow the instruction, enter the password and the port you wanna use.

Server Setup complete, now go to the client side

1. Download & Install the client  here https://github.com/shadowsocks/shadowsocks-windows/releases
2. Enter your server IP, port and the password. Connect!

By default, all traffic should go through the SS server gateway, you can change the configuration and selectively choose what traffic you want to go through SS.

Enjoy!

To apply free SSL certificate, go https://startssl.com/Account register an account. On “Certificates Wizard” follow the step and verify you are the domain owner, create a csr (certificate request file) on your server. After the approval that you will get a private key and the crt file. Simply Import these file to your web server, restart the service and then your HTTP connection has start protected 🙂

The certificate will be expire after one year, you can renew the certificate for free again.

相信不少人都聽過CDN這個服務，前兩天把幾個網頁都啟動了這個功能，服務是由Cloudflare提供的。
CDN是用”Anycast”技術，即不同地區的伺服器但用同一組IP，在WAN的層面中找最短的路徑，從而達致反應和速度提升的效果。CDN伺服器會把固定的網頁內容做cache，然後replicate到各地的CDN伺服器。

比如當新加坡的用戶訪問本網時，因為新加坡有Cloudflare的CDN server，所以路由就會自動訪問最近的CDN server取得本網內容。

我分別用了公司位於新加坡，澳洲及香港的網絡做測試，結果如下：

實驗證明，使用各地的機器到本網的延遲值都低於10ms，Cloudflare的CDN server還遍佈全球各大洲份。Cloudflare不但可以隱藏自己伺服器的IP，而且還有DDOS protection的功能！可見作用十分大，各位可以值得一試。