常规连接正常，但存在SSL问题

我正在CentOS 6.4上运行我的应用程序，使用Nginx 1.0.15和gunicorn 19.1.1。如果我只使用端口80而不使用SSL，那么我的应用程序可以正常工作。但是，当我尝试向站点添加SSL时，Nginx会重定向到https://，但是重定向后我得到的只是“网页不可用”，没有其他信息

upstream apollo2_app_server {
  # fail_timeout=0 means we always retry an upstream even if it failed
  # to return a good HTTP response (in case the Unicorn master nukes a
  # single worker for timing out).

  server unix:/webapps/apollo2/run/gunicorn.sock fail_timeout=0;
}

#server {
#   listen 80;
#   server_name mysub.example.com;
#   rewrite ^ https://$server_name$request_uri? permanent;
#}

# This works fine like this, but when I uncomment the above 
# and the below ssl information, I get "webpage not available."
server {
     listen 80;
   #  listen 443;
   #  ssl on;
   #  ssl_certificate /etc/nginx/ssl/2b95ec8183e5d1asdfasdfsadf.crt;
   #  ssl_certificate_key /etc/nginx/ssl/exmaple.com.key;
   #  server_name mysub.example.com;

    client_max_body_size 4G;

    keepalive_timeout    70;

    access_log /webapps/apollo2/logs/nginx-access.log;
    error_log /webapps/apollo2/logs/nginx-error.log;

    location /static/ {
        alias   /webapps/apollo2/static/;
    }

    location /media/ {
        alias   /webapps/apollo2/media/;
    }

    location / {
        # an HTTP header important enough to have its own Wikipedia entry:
        #   http://en.wikipedia.org/wiki/X-Forwarded-For
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

        # enable this if and only if you use HTTPS, this helps Rack
        # set the proper protocol for doing redirects:
        # proxy_set_header X-Forwarded-Proto https;

        # pass the Host: header from the client right along so redirects
        # can be set properly within the Rack application
        proxy_set_header Host $http_host;

        # we don't want nginx trying to do something clever with
        # redirects, we set the Host: header above already.
        proxy_redirect off;

        # set "proxy_buffering off" *only* for Rainbows! when doing
        # Comet/long-poll stuff.  It's also safe to set if you're
        # using only serving fast clients with Unicorn + nginx.
        # Otherwise you _want_ nginx to buffer responses to slow
        # clients, really.
        # proxy_buffering off;

        # Try to serve static files from nginx, no point in making an
        # *application* server like Unicorn/Rainbows! serve static files.
        if (!-f $request_filename) {
            proxy_pass http://apollo2_app_server;
            break;
        }
    }

    # Error pages
    error_page 500 502 503 504 /500.html;
    location = /500.html {
        root /webapps/apollo2/static/;
    }
}

• 我在错误日志中没有看到任何内容
• 我已经检查了443端口和 开放时间：
• 这是我正在成功使用的通配符证书 在Debian 7上运行的另一个服务器上的另一个子域与Nginx的设置相同

---

我应该看什么？我遗漏了什么？

我也应该展示我的iptables，因为那时肯定有人会发现的。我不是这方面的专家，但我的设置有问题，导致重定向失败

最后，我使用了Linode的例子，现在可以了。