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Initialize the server.

1. login as root user.
   • ssh root@server_ip_address
2. create a new user:
   • adduser username
   • Use the usermod command to add the user to the sudo group. usermod -aG sudo username
   • Test sudo access on new user account. su - username
3. login as new created user.
4. sudo apt-get install build-essential
5. For build other stuff. sudo apt-get install -y make build-essential libssl-dev zlib1g-dev libbz2-dev libreadline-dev libsqlite3-dev wget curl llvm libncurses5-dev libncursesw5-dev xz-utils

Install shadowsocks.

shadowsocks-libev

• The config server address must be 0.0.0.0 or the ip address.

Install ikev2

https://github.com/quericy/one-key-ikev2-vpn

• Determine the adapter: route

Determine

• sudo virt-what