Hi, I try to implement EAP/TLS for network users in company I work. Authentication is works only for one certificate. When I create a second certificate and concatenate with the first certificate using 'cat', both certificates does not work . The error it gives is shown below (error is in the last line), auth: type "EAP" Processing the authenticate section of radiusd.conf modcall: entering group authenticate for request 37 rlm_eap: Request found, released from the list rlm_eap: EAP/tls rlm_eap: processing type tls rlm_eap_tls: Authenticate rlm_eap_tls: processing TLS rlm_eap_tls: Length Included eaptls_verify returned 11 (other): before/accept initialization TLS_accept: before/accept initialization rlm_eap_tls: <<< TLS 1.0 Handshake [length 0041], ClientHello TLS_accept: SSLv3 read client hello A rlm_eap_tls: >>> TLS 1.0 Handshake [length 004a], ServerHello TLS_accept: SSLv3 write server hello A rlm_eap_tls: >>> TLS 1.0 Handshake [length 0274], Certificate TLS_accept: SSLv3 write certificate A rlm_eap_tls: >>> TLS 1.0 Handshake [length 0078], CertificateRequest TLS_accept: SSLv3 write certificate request A TLS_accept: SSLv3 flush data TLS_accept:error in SSLv3 read client certificate A I hope somebody from the list can help me. Thanks.