AWS ELB -> 使用自签名证书通过 HTTPS 的后端服务器

Question

我已经有 HTTPS 来终止我的 AWS ELB 上的外部 HTTPS 连接。我现在正尝试使用带有自签名证书的 HTTPS 来保护我的 ELB 和 EC2 上的后端 NGINX 服务器之间的连接。我已关注 the documentation，但通过 HTTPS 访问服务器会导致 408 HTTP 超时。我似乎无法获得任何调试信息来确定哪里出了问题。

我已经确认安全组允许 EC2 上的 ELB 和 NGINX 之间的连接。
我已经确认 VPC 允许在 ELB 和 EC2 节点之间路由流量（HTTP 也可以正常工作）。
我已经确认EC2节点上的HTTPS监听器正在运行（我可以直接打w/o去ELB
我创建了一个 PublicKeyPolicyType 类型的 ELB 策略，并关联了我的 public 密钥。
我创建了类型为 BackendServerAuthenticationPolicyType 的 ELB 策略，并将其与 PublicKeyPolicyType 相关联。
我已将 BackendServerAuthenticationPolicyType 与 ELB 相关联。
我已确保 SSLNegotiationPolicyType 支持我在 NGINX 配置中指定的算法和密码。
我在我的 NGINX 访问日志中看到了 HTTP 请求，但没有看到 HTTPS 请求。

有什么方法可以获得任何额外的诊断信息来测试这个吗？

这是我的 ELB 配置：

$ aws elb describe-load-balancers --load-balancer-name <MY-ELB-NAME>

{
    "LoadBalancerDescriptions": [
        {
            "Subnets": [
                "<REDACTED>",
                "<REDACTED>",
                "<REDACTED>"
            ],
            "CanonicalHostedZoneNameID": "<REDACTED>",
            "VPCId": "<REDACTED>",
            "ListenerDescriptions": [
                {
                    "Listener": {
                        "InstancePort": 80,
                        "LoadBalancerPort": 80,
                        "Protocol": "HTTP",
                        "InstanceProtocol": "HTTP"
                    },
                    "PolicyNames": []
                },
                {
                    "Listener": {
                        "InstancePort": 443,
                        "SSLCertificateId": "<REDACTED>",
                        "LoadBalancerPort": 443,
                        "Protocol": "HTTPS",
                        "InstanceProtocol": "HTTPS"
                    },
                    "PolicyNames": [
                        "ELBSecurityPolicy-2015-05"
                    ]
                }
            ],
            "HealthCheck": {
                "HealthyThreshold": 2,
                "Interval": 30,
                "Target": "HTTP:80/health",
                "Timeout": 10,
                "UnhealthyThreshold": 2
            },
            "BackendServerDescriptions": [
                {
                    "InstancePort": 443,
                    "PolicyNames": [
                        "MyBackendServerAuthenticationPolicy"
                    ]
                }
            ],
            "Instances": [
                {
                    "InstanceId": "<REDACTED>"
                }
            ],
            "DNSName": "<REDACTED>.us-west-2.elb.amazonaws.com",
            "SecurityGroups": [
                "<GROUP_ID>"
            ],
            "Policies": {
                "LBCookieStickinessPolicies": [],
                "AppCookieStickinessPolicies": [],
                "OtherPolicies": [
                    "ELBSecurityPolicy-2015-05",
                    "MyBackendServerAuthenticationPolicy",
                    "MyPublicKeyPolicy"
                ]
            },
            "LoadBalancerName": "<MY-ELB-NAME>",
            "CreatedTime": "2016-03-23T20:58:49.490Z",
            "AvailabilityZones": [
                "us-west-2a",
                "us-west-2b",
                "us-west-2c"
            ],
            "Scheme": "internal",
            "SourceSecurityGroup": {
                "OwnerAlias": "<REDACTED>",
                "GroupName": "<GROUP_NAME>"
            }
        }
    ]
}

这是我的 ELB 政策：

$ aws elb describe-load-balancer-policies --load-balancer-name <MY-ELB-NAME>
{
    "PolicyDescriptions": [
        {
            "PolicyAttributeDescriptions": [
                {
                    "AttributeName": "Reference-Security-Policy",
                    "AttributeValue": "ELBSecurityPolicy-2015-05"
                },
                ...
                {
                    "AttributeName": "Protocol-TLSv1.2",
                    "AttributeValue": "true"
                },
                ...
                {
                    "AttributeName": "ECDHE-RSA-AES128-GCM-SHA256",
                    "AttributeValue": "true"
                },
                ...
            ],
            "PolicyName": "ELBSecurityPolicy-2015-05",
            "PolicyTypeName": "SSLNegotiationPolicyType"
        },
        {
            "PolicyAttributeDescriptions": [
                {
                    "AttributeName": "PublicKeyPolicyName",
                    "AttributeValue": "MyPublicKeyPolicy"
                }
            ],
            "PolicyName": "MyBackendServerAuthenticationPolicy",
            "PolicyTypeName": "BackendServerAuthenticationPolicyType"
        },
        {
            "PolicyAttributeDescriptions": [
                {
                    "AttributeName": "PublicKey",
                    "AttributeValue": "<REDACTED>"
                }
            ],
            "PolicyName": "MyPublicKeyPolicy",
            "PolicyTypeName": "PublicKeyPolicyType"
        }
    ]
}

这是我的 NGINX 配置：

worker_processes 10;
worker_rlimit_nofile 8192;
events {
  worker_connections  4096;
}

error_log syslog:server=unix:/dev/log error;
pid       logs/nginx.pid;

http {
  default_type  application/octet-stream;

  log_subrequest on;
  access_log syslog:server=unix:/dev/log,severity=debug extended;

  tcp_nodelay    on;
  tcp_nopush     on;

  server_tokens off;

  upstream api {
    server localhost:8080;
  }

  server {
    listen 80 default_server;
    listen [::]:80 default_server;

    location / {
      # Redirect all other HTTP requests to HTTPS with a 301 Moved Permanently response.
      return 301 https://$host$request_uri;
    }
  }

  server {
    listen 443 ssl;
    listen [::]:443 ssl;

    ssl_certificate /path/to/ssl.crt;
    ssl_certificate_key /path/to/ssl.key;
    ssl_session_timeout 1d;
    ssl_session_cache shared:SSL:50m;
    ssl_session_tickets off;ECDHE

    # Diffie-Hellman parameter for DHE ciphersuites, recommended 2048 bits
    ssl_dhparam /path/to/dhparam.pem;

    # modern configuration. tweak to your needs.
    # See: https://mozilla.github.io/server-side-tls/ssl-config-generator/
    ssl_protocols TLSv1.2;
    ssl_ciphers 'ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256';
    ssl_prefer_server_ciphers on;

    add_header Strict-Transport-Security "max-age=15768000; includeSubDomains;";

    # Our main location to proxy everything else to the upstream
    # server, but with the added logic for enforcing HTTPS.
    location / {
      proxy_http_version 1.1;
      proxy_set_header X-Real-IP $remote_addr;
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
      proxy_set_header Host $http_host;
      proxy_redirect off;
      proxy_next_upstream error;

      proxy_pass http://api;
    }
  }
}

我正在使用以下命令生成 keys/certificates：

$ openssl genrsa \
  -out /path/to/ssl.key 2048
$ openssl req \
  -sha256 \
  -new \
  -key /path/to/ssl.key \
  -out /path/to/ssl.csr
$ openssl x509 \
  -req \
  -days 365 \
  -in /path/to/ssl.csr \
  -signkey /path/to/ssl.key \
  -out /path/to/ssl.crt
$ openssl dhparam -out /path/to/dhparam.pem 2048

Answer 1

在 NGINX 配置中添加一些非 EC DHE 密码为我解决了这个问题。我已经在 nginx.conf:

的 HTTPS 侦听器中切换到以下配置

  # intermediate configuration. tweak to your needs.
  ssl_ciphers 'ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES256-SHA:ECDHE-ECDSA-DES-CBC3-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:DES-CBC3-SHA:!DSS';

我想放弃所有非 EC DHE 密码，只支持 ECDHE。我怀疑这可以解决问题，因为我生成的是 RSA key/cert 而不是 EC key/cert。如果有人知道我如何正确生成 EC key/cert，然后正确提取 EC public 密钥以上传到 AWS，请改进我的回答。我尝试生成 EC key/cert，但是当我尝试创建 ELB public 密钥策略时，AWS 将其报告为无效的 public 密钥。

AWS ELB -> 使用自签名证书通过 HTTPS 的后端服务器

AWS ELB -> Backend Server over HTTPS with Self-Signed Certificate

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