CloudLink：远程 HTTPS 服务器未强制实施 HTTP 严格传输安全性 （HSTS）

CloudLink：安全扫描报告：

The remote HTTPS server is not enforcing HTTP Strict Transport Security (HSTS)
The remote HTTPS server does not send the HTTP "Strict-Transport-Security" header

HSTS 是一个可选的响应标头，可在服务器上配置，以指示浏览器仅使用 HTTPS 进行通信。缺少 HSTS 允许降级攻击、SSL 剥离中间人攻击，并削弱 cookie 劫持保护。

- Navigate to the Cloudlink UI login page.
- Right click on white empty space and select 'Inspect'.
- Select the 'Network' tab.
- Select one of the Cloudlink HTTP requests on the left panel.
- Match the response headers you're seeing to what we expect to see from the KB article

HTTP 响应包含所有标头，默认情况下由 https://docs.spring.io/autorepo/docs/spring-security/4.2.3.RELEASE/reference/html/headers.html 设置

            HTTP/1.1 200 OK
            Date: Fri, 22 May 2020 11:51:57 GMT
            Cache-Control: no-cache, no-store, max-age=0, must-revalidate
            Pragma: no-cache
            Expires: Thu, 01 Jan 1970 00:00:00 GMT
            Strict-Transport-Security: max-age=31536000 ; includeSubDomains
            X-XSS-Protection: 1; mode=block
            X-Frame-Options: SAMEORIGIN
            X-Content-Type-Options: nosniff
            Content-Type: text/html
            Last-Modified: Tue, 10 Sep 2019 17:33:22 GMT
            Accept-Ranges: bytes
            Vary: Accept-Encoding, User-Agent
            ETag: W/"C/NxCAz49KYC/NwZBDEXzM"
            Content-Length: 1349