Run a Proxy on Amazon EC2 VPC

Step 1: 先去Amazon官網建立自己的EC2 instance
Step 2: 利用AWS key,讓自己的電腦連上EC2 instance
Step 3: 連上之後,在EC2 instance上安裝proxy server軟體
Step 4: 編輯proxy server軟體的config檔,指定要使用的port和允許連線的IP address
Step 5: Redirect localhost with specified port to EC2 instance IP address and proxy port
Step 6: Open your computer network setting page to configure proxy ip address and port

Note:
1) We use Squid as our proxy server on Ubuntu 18.04.3 LTS (GNU/Linux 4.15.0-1057-aws x86_64)
2) After connecting to your instance, you can use following commands to set up Squid:
sudo apt update
sudo apt install squid
cd etc/squid
sudo su
vi squid.conf // to allow specified ip address connection
sudo service squid restart // Restart Squid service to reload the configuration changes

ref:

1) https://www.youtube.com/watch?v=FCEHqB3wTcQ&list=PLIuJKXXSwZ8C4UyUNzfFRvLayI5YQyoGf&index=7&t=0s

2)https://gist.github.com/webinista/812c20247a6c21e639ce

Other ref:

• Unable to locate package” Error on Ubuntu:
  https://itsfoss.com/unable-to-locate-package-error-ubuntu/
• How to Setup Squid Proxy Server on Ubuntu 18.04 & 16.04:
  https://tecadmin.net/setup-squid-proxy-server-on-ubuntu/
• Squid – Proxy Server installation & config:
  https://help.ubuntu.com/lts/serverguide/squid.html
• Find or Search a Word in Vim or Vi Text Editor:
  https://linux4one.com/how-to-find-or-search-a-word-in-vim-or-vi-text-editor/