NGINX caching proxy fails with SSL23_GET_SERVER_HE

Question

NGINX acting as a caching proxy encounters problems when fetching content from CloudFront server over HTTPS:

This is the extract from the NGINX's error log:

2014/08/14 16:08:26 [error] 27534#0: *11560993 SSL_do_handshake() failed (SSL: error:14077410:SSL routines:SSL23_GET_SERVER_HELLO:sslv3 alert handshake failure) while SSL handshaking to upstream, client: 82.33.49.135, server: localhost, request: "GET /static/images/media-logos/best.png HTTP/1.1", upstream: "https://x.x.x.x:443/static/images/media-logos/best.png",

I tried different proxy setting like proxy_ssl_protocols and proxy_ssl_ciphers but no combination worked.

Any ideas?

Answer 1

I had the exactly same problem and spent a couple of hours... I guess you are using older version of nginx (lower than 1.7)? In nginx 1.7 you can use this directive:

proxy_ssl_server_name on;

This will force nginx to use SNI Also, you should set the SSL protocols:

proxy_ssl_protocols TLSv1 TLSv1.1 TLSv1.2;

For earlier versions you may be able to use this patch (but I can't verify that that is working):

http://trac.nginx.org/nginx/ticket/229