Problem with certificates

[welty]

Hello,

I'm trying to use iPXE with certificates but without success.
On the SOL, I have :
[undefined=undefined]...
000a6a14 : d0 d5 0d 22 27 ef 10 ec-4d 16 69 de f8 a1 c8 b1 : ..."'...M.i..... = 0x1
TLS 0x26534 found certificate m2-mn = 0x1
TLS 0x26534 found certificate diskless = 0x1
TLS 0x26534 certificate validation failed: Permission denied (http://ipxe.org/02= 0x1
16eb3c) = 0x1
Permission denied (http://ipxe.org/0216eb3c) = 0x1
Could not boot image: Permission denied (http://ipxe.org/0216eb3c) = 0x1
No more network devices [/undefined]

diskless is the CA certificate and m2-mn is the server one.

And on the server :
[undefined=undefined]==> /var/log/httpd/ssl_error_log <==
[Tue May 27 09:25:24.148528 2014] [ssl:info] [pid 37740] [client 172.29.40.128:47987] AH01964: Connection to child 4 established (server m2-mn:443)
[Tue May 27 09:25:24.148984 2014] [ssl:debug] [pid 37740] ssl_engine_kernel.c(1913): [client 172.29.40.128:47987] AH02043: SSL virtual host for servername m2-mn found
[Tue May 27 09:25:24.266356 2014] [ssl:debug] [pid 37740] ssl_engine_io.c(1201): (70014)End of file found: [client 172.29.40.128:47987] AH02007: SSL handshake interrupted by system [Hint: Stop button pressed in browser?!]
[Tue May 27 09:25:24.266391 2014] [ssl:info] [pid 37740] [client 172.29.40.128:47987] AH01998: Connection closed to child 4 with abortive shutdown (server m2:443)[/undefined]

I follow all directives from the iPXE.

Do you have any tips that I can try ?

Thank's a lot !

Regards
Welty