> On 6 Nov 2019, at 22:41, mogwai <nginx-forum@forum.nginx.org> wrote:
>
> My first question is regarding the particular error log messages produced
> during the attack - see example below:
>
> [info] 8050#8050: *146 SSL_do_handshake() failed (SSL: error:14094416:SSL
> routines:ssl3_read_bytes:sslv3 alert certificate unknown:SSL alert number
> 46) while SSL handshaking, client: XXX.XXX.XXX.XXX, server: 0.0.0.0:443
>
> The "certificate unknown" seems to suggest that nginx is trying to verify
> the certificate of the client, yet "ssl_verify_client" should be off by
> default, so why does nginx care about that certificate?
That's opposite: nginx received a certificate_unknown alert message
from a client for some reason while in handshake.
--
Sergey Kandaurov
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