在 Linux 上安裝 VPN -- 以 NordVPN 為例

方法一

• 安裝 NordVPN 應用程式
  

  1. $ sh <(curl -sSf https://downloads.nordcdn.com/apps/linux/install.sh)
  2. 沒有 curl 可以安裝 $ sudo apt install curl

• NordVPN 指令集
  

  1. nordvpn login - Log in.

  2. nordvpn connect or nordvpn c - Connect to VPN. To connect to specific servers, use nordvpn connect <country_code server_number> (eg. nordvpn connect uk715) 

  3. nordvpn disconnect or nordvpn d - Disconnect from VPN. 

  4. nordvpn connect US -g double_vpn - Connect to a Double VPN server where the first hop is a specific country 

  5. nordvpn connect P2P - connect to a P2P server. 

  6. nordvpn connect The_Americas - connect to servers located in the Americas. 

  7. nordvpn connect Dedicated_IP - connect to a Dedicated IP server. 

  8. nordvpn set or nordvpn s - Set a configuration option. Possible options:

     • nordvpn set cybersec on or off - Enable or disable CyberSec 

     • nordvpn set killswitch on or off - Enable or disable Kill Switch 

     • nordvpn set autoconnect on or off - Enable or disable auto-connect. You can set a specific server for automatic connection using nordvpn set autoconnect on country_code+server_number. Example: nordvpn set autoconnect on us2435.

     • nordvpn set notify on or off - Enable or disable notifications

     •  nordvpn set dns 1.1.1.1 1.0.0.1 - Set custom DNS (you can set up a single DNS or two like shown in this command). 

     • nordvpn set protocol udp or tcp - Switch between UDP and TCP protocols 

     • nordvpn set obfuscate on or off - Enable or disable Obfuscated Servers. 

     • nordvpn set technology - Set connection technology (OpenVPN or NordLynx)

  9. nordvpn whitelist add port 22 - Add a rule to whitelist a specified incoming port. You can also whitelist multiple ports — just separate their numbers with a space. 

  10. nordvpn whitelist remove port 22 - Remove the rule to whitelist a specified port. 

  11. nordvpn whitelist add subnet 192.168.0.0/16 - Add a rule to whitelist a specified subnet. 

  12. nordvpn whitelist remove subnet 192.168.0.0/16  - Remove the rule to whitelist a specified subnet. 

  13. nordvpn account - See account information 

  14. nordvpn register - Register a new user account 

  15. nordvpn rate - Rate your last connection quality (1-5) 

  16. nordvpn settings - See the current settings. 

  17. nordvpn status - See the connection status. 

  18. nordvpn countries - See the country list. 

  19. nordvpn cities - See the city list. 

  20. nordvpn groups - See a list of available server groups. 

  21. nordvpn logout - Log out. 

  22. nordvpn help or nordvpn h - See the list of available commands or help for a specific command.

      You can get an extensive explanation of all commands by using the man nordvpn command in Terminal.

方法二

• 關閉 IPv6 

  1. sudo nano /etc/sysctl.conf
  2. 在檔案尾端加入下列 4 行：
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1
net.ipv6.conf.tun0.disable_ipv6 = 1
  3. 存檔，重啟。 

•  從 Linux Network Manager 連上 NordVPN Servers
  

1. 下載 OpenVPN Configuration File Package (ovpn.zip)，並解壓縮

   

2.  從螢幕右上角點開網路設定，下拉 VPN OFF 選擇 VPN Setting

   

3. 按下 VPN 旁 + 號，新增 VPN

   

4.  選擇連線類型 Import from file…

   

5.  從步驟 1 解壓縮產生之 ovpn_udp 夾中，開啟一個組態檔或參考方法三，使用推薦伺服器的組態檔。

   

6. 在跳出的視窗中輸入帳密，按下 ADD 新增

   
   

7.  在 Linux Network Manager 畫面 VPN 項下，按下撥動開關，當它呈現綠色，就完成 VPN 連線工作

   

   
   

方法三

•  從 NordVPN 網站「推薦伺服器」功能連上 NordVPN Servers
  

1.  點選「推薦伺服器」

   

2.  點選「Show available protocols」

   

3.  點選「OpenVPN UDP」右側「Download config」

   

4.  承接方法二：步驟 6 加入 VPN 即可