[Modules] [error] GnuTLS: Hanshake Alert (48) 'CA is unknown'.

Nikos Mavrogiannopoulos nmav at gnutls.org
Fri Sep 19 01:16:54 EDT 2008

Ling-hua Tseng wrote:
> Here is my environment:
>    apache-worker-2.2.9_5
>    mod_ssl/2.2.9 (bundled with apache2 in FreeBSD's package/ports system)
>    OpenSSL/0.9.8e (OS bundled library)
>    gnutls-2.4.1_1
>    mod_gnutls-0.4.3 (0.5.2 is also tested)
> There are 7 name-based SSL virtual hosts configured in my web server.
> The following 2 lines are appeared in the error log of my default SSL
> site when every one is accessing any SSL sites:
> [error] GnuTLS: Hanshake Alert (48) 'CA is unknown'.
> [error] [client] GnuTLS: Handshake Failed (-12) 'A TLS
> fatal alert has been received.'

Some browsers that visited your sites do not like the certificates and
send this alert.


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