Hi Our schools filtering product utilises OpenSSL with Squid; we're seeing issues connecting to some sites which seem OpenSSL related. Two sites with known issues are: https://www.spellanywhere.co.uk/ https://www.mymaths.co.uk/ Connecting to either of these Squid returns the error: (71) Protocol error (TLS code: SQUID_ERR_SSL_HANDSHAKE) Handshake with SSL server failed: error:14077438:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert internal error Running openssl tests direct from a schools box (OpenSSL 1.0.1) gets: # openssl s_client -connect www.spellanywhere.co.uk:443 CONNECTED(00000003) 3073661128:error:14077438:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert internal error:s23_clnt.c:734: Attempting to disable protocols for testing gets: openssl s_client -no_tls1 -no_tls1_1 -no_tls1_2 -connect www.spellanywhere.co.uk:443 CONNECTED(00000003) 3074005192:error:14077410:SSL routines:SSL23_GET_SERVER_HELLO:sslv3 alert handshake failure:s23_clnt.c:734: and eventually openssl s_client -no_tls1 -no_tls1_1 -no_tls1_2 -no_ssl3 -no_ssl2 -connect www.spellanywhere.co.uk:443 CONNECTED(00000003) 3073534152:error:140740BF:SSL routines:SSL23_CLIENT_HELLO:no protocols available:s23_clnt.c:385: While forcing dtls with openssl s_client -dtls1 -connect www.spellanywhere.co.uk:443 seems to establish a tunnel as expected. Using curl or wget on the same boxes to those sites works as expected. Tests on a local box with OpenSSL 1.0.2e return similar results, although the disabled protocols test returns a different error: openssl s_client -no_tls1 -no_tls1_1 -no_tls1_2 -no_ssl3 -no_ssl2 -connect www.spellanywhere.co.uk:443 CONNECTED(00000003) 139735616550552:error:14077102:SSL routines:SSL23_GET_SERVER_HELLO:unsupported protocol:s23_clnt.c:735: Is this some sort of SSL handshake fallback error? Is there anything we can do in terms of configuration? Are we barking up the wrong tree? All input/questions welcome. Thanks Chris --- Chris Puttick CEO & Chief Asst to the duck TwoTen http://twoten.is Making the Internet better. For kids. +44 7908 997 146 @putt1ck Two Ten Web Limited, Regd Company no. 7774762 Regd office Unit 6, Southill, Cornbury Park, Charlbury, Oxfordshire OX7 3EW United Kingdom
