IIS 同IP只能安装一个证书， 在不更换原有运行环境的情况下安装多个证书，可以使用nginx作为前端反向代理IIS。

1 .Nginx设置教程

nginx下载地址 http://nginx.org/en/download.html

server {
	listen 80;
	listen 443 ssl;    
	server_name www.getssl.cn;
	ssl_protocols TLSv1.2 TLSv1.1 TLSv1;
	ssl_certificate /opt/ssl/yourdomain.com.crt;
	ssl_certificate_key /opt/ssl/yourdomain.com.key;
	ssl_prefer_server_ciphers on;
	
	#自动跳转到HTTPS (可选)
	if ($server_port = 80) {
		rewrite ^(.*)$ https://$host$1 permanent;
	}
       
	location / {
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_set_header Host $http_host;
        proxy_set_header X-NginX-Proxy true;

        proxy_pass http://localhost:8080;
        proxy_redirect off;

        # Socket.IO Support
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
    }
    }

优化缓存静态文件

# Feedlocation ~* \.(?:rss|atom)$ {
  expires 1h;
  add_header Cache-Control "public";}# Media: images, icons, video, audio, HTClocation ~* \.(?:jpg|jpeg|gif|png|ico|cur|gz|svg|svgz|mp4|ogg|ogv|webm|htc)$ {
  expires 1M;
  access_log off;
  add_header Cache-Control "public";}# CSS and Javascriptlocation ~* \.(?:css|js)$ {
  expires 1y;
  access_log off;
  add_header Cache-Control "public";}

2. 需要将IIS站点端口修改成8080