SSL 证书不保护连接

Question

我正在尝试为 Ubuntu 服务器上的一个网站分配 SSL 证书。

这是我的/etc/apache2/sites-available/blog.conf文件：

<VirtualHost *:81>
        # The ServerName directive sets the request scheme, hostname and port that
        # the server uses to identify itself. This is used when creating
        # redirection URLs. In the context of virtual hosts, the ServerName
        # specifies what hostname must appear in the request's Host: header to
        # match this virtual host. For the default virtual host (this file) this
        # value is not decisive as it is used as a last resort host regardless.
        # However, you must set it for any further virtual host explicitly.
        ServerName jeroenvanrensen.nl
        ServerAlias jeroenvanrensen.nl

        ServerAdmin webmaster@localhost
        DocumentRoot /var/www/blog/public

        # SSL Certificate
        SSLEngine On
        SSLCertificateFile /var/certificates/blog/bundle.crt
        SSLCertificateKeyFile /var/certificates/blog/blog.key

        # Available loglevels: trace8, ..., trace1, debug, info, notice, warn,
        # error, crit, alert, emerg.
        # It is also possible to configure the loglevel for particular
        # modules, e.g.
        #LogLevel info ssl:warn

        ErrorLog ${APACHE_LOG_DIR}/error.log
        CustomLog ${APACHE_LOG_DIR}/access.log combined

        # For most configuration files from conf-available/, which are
        # enabled or disabled at a global level, it is possible to
        # include a line for only one particular virtual host. For example the
        # following line enables the CGI configuration for this host only
        # after it has been globally disabled with "a2disconf".
        #Include conf-available/serve-cgi-bin.conf
</VirtualHost>

我使用端口 81，因为我使用反向代理。我知道这不是问题，因为我已经有一个以同样方式运行的网站。

一切似乎都运行正常，如果我运行，sudo apache2ctl configtest我会得到“语法 OK”，但我的浏览器会显示以下消息：

无法连接：安全问题（译自荷兰语）

我真的希望知道这里发生了什么。

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