use !aNULL to disable all anonymous cipher suites
patch by Rob Stradling
diff --git a/conf/nginx.conf b/conf/nginx.conf
index 672ce8c..3bb3389 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -106,7 +106,7 @@
     #    ssl_session_timeout  5m;
 
     #    ssl_protocols  SSLv2 SSLv3 TLSv1;
-    #    ssl_ciphers  ALL:!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP;
+    #    ssl_ciphers  HIGH:!aNULL:!MD5;
     #    ssl_prefer_server_ciphers   on;
 
     #    location / {