13: Permission denied while connect server using https through nginx

[malintha]

Hi,

My nginx configurations are as follows. I am going to connect running server
UI from my machine through nginx. 

server {
   listen       443;
   server_name  mgt.wso2bps.malintha.com;
   ssl on;
   ssl_certificate /etc/nginx/ssl/wso2bps.crt;
   ssl_certificate_key /etc/nginx/ssl/wso2bps.key;

   location / {
       proxy_pass https://10.1.1.1:9443/carbon;

   }
}


Server is running and I can access the UI directly from my computer. But
when I access it through nginx it goves me 502 bad gateway on browser and
following error in nginx error log


2015/02/03 13:15:43 [crit] 5721#0: *7 connect() to 10.1.1.1:9443 failed (13:
Permission denied) while connecting to upstream, client: 10.174.14.28,
server: mgt.wso2bps.malintha.com, request: "GET / HTTP/1.1", upstream:
"https://10.1.1.1:9443/carbon", host: "mgt.wso2bps.malintha.com"

I tried run server/stop server but both incidents gives same error in nginx
side. What may be the reason for this error?

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,256412,256412#msg-256412