Re: LDAP+TLS

[Howard Chu <hyc@symas.com>]

Net Warrior wrote:

> With this configuration everything seems to work fine, but now, what I 
> want to do is to force my clients to use a certificate to connect,
> so, if I did not misundestrand it wrong, the demand options is a must.
>
> So, when I change TLSVerifyClient never to demand. I've get the 
> following ( alway on my server )
>
> linux:/etc/ssl # openssl s_client -connect localhost:636 -state 
> -showcerts -CAfile cacert.pem

This invocation of s_client didn't provide the -cert or -key options, so 
no client certificate was used. Naturally the handshake fails.

Learn to use the OpenSSL tools.

> CONNECTED(00000003)
> SSL_connect:before/connect initialization
> SSL_connect:SSLv2/v3 write client hello A
> SSL_connect:SSLv3 read server hello A
> depth=1 /C=AU/ST=Some State/L=City/O=Internet Widgits Pty 
> Ltd/OU=Section/CN=localhost/emailAddress= test@company.com 
> <mailto:test@company.com>
> verify return:1
> depth=0 /C=AU/ST=Some Even State/L=City/O=Internet Widgits Pty 
> Ltd/OU=Section/CN=localhost/emailAddress=test@company.com 
> <mailto:test@company.com>
> verify return:1
> SSL_connect:SSLv3 read server certificate A
> SSL_connect:SSLv3 read server certificate request A
> SSL_connect:SSLv3 read server done A
> SSL_connect:SSLv3 write client certificate A
> SSL_connect:SSLv3 write client key exchange A
> SSL_connect:SSLv3 write change cipher spec A
> SSL_connect:SSLv3 write finished A
> SSL_connect:SSLv3 flush data
> SSL3 alert read:fatal:handshake failure
> SSL_connect:failed in SSLv3 read finished A
> 6274:error:14094410:SSL routines:SSL3_READ_BYTES:sslv3 alert handshake 
> failure:s3_pkt.c:1052:SSL alert number 40
> 6274:error:140790E5:SSL routines:SSL23_WRITE:ssl handshake 
> failure:s23_lib.c:226:
>
>
> Making some searches in the mailing list I found a guy who had the same 
> problem, and he was told that with the
> demand option we force slapd to ask for a client certificate, and that 
> the client certificate is a must.
> Well, now, I do not get it, cuz I'm authenticating against myself, with 
> teh certificates I generated before,
> maybe ai have to generate a separate pair of certificates, do not know.
>
> With never, and always it works as suggested by someone in the list, who 
> said that first we need try a lower option (never, allow )
> to test if the server works ) my problem is with the demand option.
>
>
> What am I mising here?
> Sorry for my stupidity, I do not get it yet.
>
> Thanks in advance and or your valuable time.
>
> Greets.

--
  -- Howard Chu
  Chief Architect, Symas Corp.  http://www.symas.com
  Director, Highland Sun        http://highlandsun.com/hyc
  OpenLDAP Core Team            http://www.openldap.org/project/