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From Nicolas Cros <>
Subject [users@httpd] SSLProxyEngine, no client certificate found
Date Tue, 16 Jun 2009 06:49:35 GMT
  Hello !

I want to setup a proxy, allowing my internal hosts to connect on  
external https servers (which forces client authentication by using a  

	[ internal hosts ]-----http---->[ apache proxy ] ------https---->  
[external https server]

External servers restrict connection from client which are  
authenticated by a client certificate (certified by the same CA).

Excerpt of my .conf :

ProxyPass               /proxy/TEST/
ProxyPassReverse        /proxy/TEST/

SSLProxyEngine on
SSLCipherSuite RC4:MD5
SSLProxyCACertificateFile       /etc/httpd/conf/ssl/ca-bundle.crt
SSLProxyMachineCertificateFile  /etc/httpd/conf/ssl/SSLproxy.pem
SSLProxyVerifyDepth             10
SSLProxyVerify                  none


I try to connect on 2 servers with similar configuration (same CA  
used, both requiring client auth, ... so AFAIK, my proxy will use the  
same client certificate):

One connection is successfull, as i can saw in my debug httpd log file :

[debug] ssl_engine_kernel.c(1499): Proxy client certificate callback:  
(myproxy:443) found acceptable cert, sending /C=XX/ST=CITY/L=Port/ 

The other one not :

	[debug] ssl_engine_kernel.c(1571): Proxy client certificate callback:  
(myproxy:443) no client certificate found!?

I wonder myself how clients certificates are choosen ? Any thoughts ?

Thanks in advance

Nicolas Cros
Connaissez vous la maison du cordonnier ?
Elle se trouve ici :

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