Domain: burian-server.cz
What I've tried:
user@pc ~ $ curl -v -3 -X HEAD https://burian-server.cz
* Rebuilt URL to: https://burian-server.cz/
* Hostname was NOT found in DNS cache
* Trying 192.168.0.102...
* Connected to burian-server.cz (192.168.0.102) port 443 (#0)
* successfully set certificate verify locations:
* CAfile: none
CApath: /etc/ssl/certs
* SSLv3, TLS handshake, Client hello (1):
* Unknown SSL protocol error in connection to burian-server.cz:443
* Closing connection 0
curl: (35) Unknown SSL protocol error in connection to burian-server.cz:443
As compared to another domain of mine sslhosting.cz, run on a different hosting:
user@pc ~ $ curl -v -3 -X HEAD https://sslhosting.cz
* Rebuilt URL to: https://sslhosting.cz/
* Hostname was NOT found in DNS cache
* Trying 88.86.120.114...
* Connected to sslhosting.cz (88.86.120.114) port 443 (#0)
* successfully set certificate verify locations:
* CAfile: none
CApath: /etc/ssl/certs
* SSLv3, TLS handshake, Client hello (1):
* SSLv3, TLS alert, Server hello (2):
* error:14094410:SSL routines:SSL3_READ_BYTES:sslv3 alert handshake failure
* Closing connection 0
curl: (35) error:14094410:SSL routines:SSL3_READ_BYTES:sslv3 alert handshake failure
One tester told me I am "probably" not vulnerable, which I do not really understand.
As there are noticeable differences in the above outputs, I suspect I might have configured my Apache server incorrectly.