我试图诊断一个问题,即对我的 VPS 的任何 HTTPS 请求都返回ERR_CONNECTION_CLOSED
。我正在使用在 NGINX 上实现的 Let's Encrypt,而 Web 服务器本身是一个 Node.js 应用程序。
该网站在特定子域下提供服务,我们就这么说吧mysub.domain.com
。
以下是 Nmap 扫描的结果mysub.domain.com
:
443/tcp open https?
对公共 IP 地址进行类似扫描的结果如下:
443/tcp closed https
我的 VPS 还没有防火墙,至少主机本身没有。以下是iptables -S
-P INPUT ACCEPT
-P FORWARD ACCEPT
-P OUTPUT ACCEPT
更新以下是输出netstat -tlpdn
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 367/sshd
tcp 0 0 0.0.0.0:443 0.0.0.0:* LISTEN 7283/nginx -g daemo
tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN 773/mysqld
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 7283/nginx -g daemo
tcp6 0 0 :::22 :::* LISTEN 367/sshd
tcp6 0 0 :::8080 :::* LISTEN 5873/nodejs
更新以下是 NGINX 的sites-available/default
内容
server {
listen 443 ssl;
server_name mysub.domain.com;
ssl_certificate /etc/letsencrypt/live/mysub.domain.com/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/mysub.domain.com/privkey.pem;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_prefer_server_ciphers on;
ssl_dhparam /etc/ssl/certs/dhparam.pem;
ssl_ciphers 'ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA';
ssl_session_timeout 1d;
ssl_session_cache shared:SSL:50m;
ssl_stapling on;
ssl_stapling_verify on;
add_header Strict-Transport-Security max-age=15768000;
location / {
proxy_pass http://localhost:8080;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection 'upgrade';
proxy_set_header Host $host;
proxy_cache_bypass $http_upgrade;
}
}
server {
listen 80;
server_name mysub.domain.com;
return 301 https://$host$request_uri;
}
VPS 所在设施的管理员告诉我,他们已经打开了 443 端口。他们是不是漏掉了什么?还是我的失误?
答案1
事实证明,管理员确实漏掉了一些事情。该设施实施了一些奇怪的 NAT/IP 转发器,他们忘记将端口 443 中的流量转发到我的 VPS。