Hello, I have configured LDAP server on linux with TLS support and was able to fetch data from it using the 'ldapsearch' utility. However, when i tried to do this searching via code i got following errors: Error at Server Side: slap_listener_activate(10): connection_get(15): got connid=47 connection_read(15): checking for input on id=47 TLS trace: SSL_accept:before/accept initialization TLS trace: SSL_accept:SSLv3 read client hello A TLS trace: SSL_accept:SSLv3 write server hello A TLS trace: SSL_accept:SSLv3 write certificate A TLS trace: SSL_accept:SSLv3 write certificate request A TLS trace: SSL_accept:SSLv3 flush data TLS trace: SSL_accept:error in SSLv3 read client certificate A TLS trace: SSL_accept:error in SSLv3 read client certificate A connection_get(15): got connid=47 connection_read(15): checking for input on id=47 TLS trace: SSL3 alert read:fatal:unknown CA TLS trace: SSL_accept:failed in SSLv3 read client certificate A TLS: can't accept. TLS: error:14094418:SSL routines:SSL3_READ_BYTES:tlsv1 alert unknown ca s3_pkt.c:1053 connection_read(15): TLS accept failure error=-1 id=47, closing connection_closing: readying conn=47 sd=15 for close connection_close: conn=47 sd=15 Error at Client side: [root@localhost LDAP1]# ./ldapSearch ldap_extended_operation_s ldap_extended_operation ldap_send_initial_request ldap_new_connection 1 1 0 ldap_int_open_connection ldap_connect_to_host: TCP localhost.localdomain:636 ldap_new_socket: 3 ldap_prepare_socket: 3 ldap_connect_to_host: Trying 127.0.0.1:636 ldap_connect_timeout: fd: 3 tm: -1 async: 0 TLS trace: SSL_connect:before/connect initialization TLS trace: SSL_connect:SSLv2/v3 write client hello A TLS trace: SSL_connect:SSLv3 read server hello A TLS certificate verification: depth: 1, err: 19, subject: /C=IN/ST=MH/O=TCS/OU=EIS/CN=localhost.localdomain/emailAddress=dhiraj.prasad(a)tcs.com, issuer: /C=IN/ST=MH/O=TCS/OU=EIS/CN=localhost.localdomain/emailAddress=dhiraj.prasad(a)tcs.com TLS certificate verification: Error, self signed certificate in certificate chain TLS trace: SSL3 alert write:fatal:unknown CA TLS trace: SSL_connect:error in SSLv3 read server certificate B TLS trace: SSL_connect:error in SSLv3 read server certificate B TLS: can't connect. ldap_err2string Error in ldap_start_tls_s -1:Can't contact LDAP serverTest..1 ldap_bind_s ldap_simple_bind_s ldap_sasl_bind_s ldap_sasl_bind ldap_send_initial_request ldap_send_server_request Test..2: -1 ldap_err2string Failure of LDAP bind -1-Can't contact LDAP server [root@localhost LDAP1]# Snippet of client code for TLS support used by Me: ldap_set_option( ld, LDAP_OPT_PROTOCOL_VERSION, &version ); ldap_set_option(ld, LDAP_OPT_X_TLS_CACERTFILE, "/root/cacert.pem"); ldap_set_option(ld, LDAP_OPT_X_TLS_CERTFILE, "/usr/local/etc/openldap/ldap.client.pem"); ldap_set_option(ld, LDAP_OPT_X_TLS_KEYFILE, "/usr/local/etc/openldap/ldap.client.key.pem"); ldap_set_option(ld, LDAP_OPT_REFERRALS , LDAP_OPT_ON); val = LDAP_OPT_X_TLS_ALLOW; ldap_set_option (ld, LDAP_OPT_X_TLS, &val); status = ldap_start_tls_s(ld, NULL, NULL); Please let me know as to what is missing in my code that is triggering the above errors. Also if there are any sample TLS client code, please let me know where can i get it. Thanks, Dhiraj Kumar Prasad Tata Consultancy Services Mailto: dhiraj.prasad(a)tcs.com Website: http://www.tcs.com ____________________________________________ Experience certainty. IT Services Business Solutions Outsourcing ____________________________________________ =====-----=====-----===== Notice: The information contained in this e-mail message and/or attachments to it may contain confidential or privileged information. If you are not the intended recipient, any dissemination, use, review, distribution, printing or copying of the information contained in this e-mail message and/or attachments to it are strictly prohibited. If you have received this communication in error, please notify us by reply e-mail or telephone and immediately and permanently delete the message and any attachments. Thank you