====== Windows RDP Service 使用正式憑證 ======
Windows RDP Service using Signed Certificate

===== 步驟 =====
  - 產生憑證
    * <code cmd>$openssl req -new -newkey rsa:4096 -nodes -sha256 -out FQDN.sha256.csr -keyout FQDN.key </code>
    * PS1: 我習慣在非 Windows 的機器上產憑證，所以這部分請自行想辦法找 openssl 來執行
    * PS2: :!: 注意！請不要使用任何線上網站來進行產生 Key 的步驟！
  - 簽署憑證
    - 使用 [[https://letsencrypt.org/|Let's Encrypt(90天)]] or [[https://www.comodo.com/e-commerce/ssl-certificates/free-ssl-certificate.php|Comodo Trial SSL(90天)]] or Buy One.
    - 拿到正式憑證的 FQDN.crt 及 CA_bundle.crt (中繼憑證)
    - 將 PEM 格式換成 pkcs12 以便餵入 Windows
      * <code cmd>$openssl pkcs12 -export -out FQDN.pfx -inkey FQDN.key -in FQDN.crt -certfile CA_bundle.crt</code>
      * 輸入個密碼保護一下
  - 放置憑證至 Windows
    - 開始 -> cmd -> mmc -> 新增/移除嵌入式管理單元 -> 憑證 -> 新增
    - 電腦帳戶 -> 本機電腦 -> 完成 -> 確定
    - 憑證(本機電腦) -> 個人 -> 憑證
    - 動作 -> 所有工作 -> 匯入
    - 匯入成功後 -> FQDN 點二下打開憑證內容 -> 憑證指紋 -> 複製該值 (EX: ‎ec 97 5c c9 95 4a 45 2b 1f 03 0d b3 32 18 b2 ae 86 0d ca 22)
    - 清除所有空格後待用(ec975cc9954a452b1f030db33218b2ae860dca22)
  - 註冊憑證至 RDP 服務
    - 開始 -> 搜尋 -> cmd -> 命令提示字元 -> 使用管理員身分執行
    - <code cmd>C:\WINDOWS\system32>wmic /namespace:\\root\cimv2\TerminalServices PATH Win32_TSGeneralSetting Set SSLCertificateSHA1Hash="ec975cc9954a452b1f030db33218b2ae860dca22"</code>
    - 完成註冊後應該會顯示<code>正在更新 '\\PCNAME\root\cimv2\TerminalServices:Win32_TSGeneralSetting.TerminalName="RDP-Tcp"' 的屬性
屬性更新成功。</code>
    - 接下來甚麼事都不用做 RDP 就會使用新憑證了。惱人的憑證問題視窗就再也不會出現了。


===== Step =====
  - Create a CSR (also including private key)
    * <code cmd>$openssl req -new -newkey rsa:4096 -nodes -sha256 -out FQDN.sha256.csr -keyout FQDN.key </code>
    * PS: I usually generate key using unix-like os to do that. Please find the [[https://www.openssl.org/|openssl]] to do so.
    * PS2: :!: Caution! DO NOT USED ANY ONLINE WEB SITE TO DO THIS SETP!
  - Sign the Certificate
    - Using [[https://letsencrypt.org/|Let's Encrypt(90 days)]] or [[https://www.comodo.com/e-commerce/ssl-certificates/free-ssl-certificate.php|Comodo Trial SSL(90 days)]] or Buy One.
    - Get the signed certificate file: FQDN.crt and CA_bundle.crt (Intermediate Certificate)
    - Change certificate format from PEM to pkcs12 for feeding to Windows
      * <code cmd>$openssl pkcs12 -export -out FQDN.pfx -inkey FQDN.key -in FQDN.crt -certfile CA_bundle.crt</code>
      * Enter password for protect file
  - Put certificate into Windows
    - Start -> Search -> cmd -> mmc -> Add/Remove Snap-in -> Certificates -> Add >
    - Computer account -> Local Computer -> Finish -> OK
    - Certificates(Local Computer) -> Personal -> Certificates
    - All task -> Import...
    - After import -> FQDN Double-click to open certificate -> Thumbprint -> Copy value (EX: ‎ec 97 5c c9 95 4a 45 2b 1f 03 0d b3 32 18 b2 ae 86 0d ca 22)
    - Remove all spaces (ec975cc9954a452b1f030db33218b2ae860dca22)
  - Register Certificate to RDP Service
    - Start -> Search -> cmd -> Command Prompt -> Run as administrator
    - <code cmd>C:\WINDOWS\system32>wmic /namespace:\\root\cimv2\TerminalServices PATH Win32_TSGeneralSetting Set SSLCertificateSHA1Hash="ec975cc9954a452b1f030db33218b2ae860dca22"</code>
    - After success registered <code>Updating '\\PCNAME\root\cimv2\TerminalServices:Win32_TSGeneralSetting.TerminalName="RDP-Tcp"' Attribute
Attributes update success.</code>
    - You do not do anything in following. RDP already using new certificate to serve. No annoying message anymore.