This is the reponse. Thank you
openssl s_client -connect teatrosanteodoro.it:443
CONNECTED(00000003)
depth=2 C = US, O = "Entrust, Inc.", OU = See Legal and Compliance, OU = "(c) 2009 Entrust, Inc. - for authorized use only", CN = Entrust Root Certification Authority - G2
verify return:1
depth=1 C = US, O = "Entrust, Inc.", OU = See Legal and Compliance, OU = "(c) 2012 Entrust, Inc. - for authorized use only", CN = Entrust Certification Authority - L1K
verify return:1
depth=0 C = IT, ST = Milano, L = Rho, O = Wind Tre S.p.A., CN = sicurezza.windtre.it
verify return:1Certificate chain
0 s:C = IT, ST = Milano, L = Rho, O = Wind Tre S.p.A., CN = sicurezza.windtre.it
i:C = US, O = "Entrust, Inc.", OU = See Legal and Compliance, OU = "(c) 2012 Entrust, Inc. - for authorized use only", CN = Entrust Certification Authority - L1K
a:PKEY: rsaEncryption, 2048 (bit); sigalg: RSA-SHA256
v:NotBefore: Jan 12 09:46:35 2022 GMT; NotAfter: Jan 10 09:46:35 2023 GMT
1 s:C = US, O = "Entrust, Inc.", OU = See Legal and Compliance, OU = "(c) 2012 Entrust, Inc. - for authorized use only", CN = Entrust Certification Authority - L1K
i:C = US, O = "Entrust, Inc.", OU = See Legal and Compliance, OU = "(c) 2009 Entrust, Inc. - for authorized use only", CN = Entrust Root Certification Authority - G2
a:PKEY: rsaEncryption, 2048 (bit); sigalg: RSA-SHA256
v:NotBefore: Oct 5 19:13:56 2015 GMT; NotAfter: Dec 5 19:43:56 2030 GMT
2 s:C = US, O = "Entrust, Inc.", OU = See Legal and Compliance, OU = "(c) 2009 Entrust, Inc. - for authorized use only", CN = Entrust Root Certification Authority - G2
i:C = US, O = "Entrust, Inc.", OU = See Legal and Compliance, OU = "(c) 2009 Entrust, Inc. - for authorized use only", CN = Entrust Root Certification Authority - G2
a:PKEY: rsaEncryption, 2048 (bit); sigalg: RSA-SHA256
v:NotBefore: Jul 7 17:25:54 2009 GMT; NotAfter: Dec 7 17:55:54 2030 GMTServer certificate
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
subject=C = IT, ST = Milano, L = Rho, O = Wind Tre S.p.A., CN = sicurezza.windtre.it
issuer=C = US, O = "Entrust, Inc.", OU = See Legal and Compliance, OU = "(c) 2012 Entrust, Inc. - for authorized use only", CN = Entrust Certification Authority - L1KNo client certificate CA names sent
Peer signing digest: SHA256
Peer signature type: RSA
Server Temp Key: ECDH, prime256v1, 256 bitsSSL handshake has read 4659 bytes and written 451 bytes
Verification: OKNew, TLSv1.2, Cipher is ECDHE-RSA-AES128-GCM-SHA256
Server public key is 2048 bit
Secure Renegotiation IS supported
Compression: NONE
Expansion: NONE
No ALPN negotiated
SSL-Session:
Protocol : TLSv1.2
Cipher : ECDHE-RSA-AES128-GCM-SHA256
Session-ID: D208D422264D4807BAD09C568C95F1850DC4AE39CCE6EB1D04EA53595E25409F
Session-ID-ctx:
Master-Key: D84AFA76890EF374750065957B45F19F6DD7A29E5D3FFC16DC4565C012277AC50DF0A6565610A62C815E4A6573F37AF8
PSK identity: None
PSK identity hint: None
Start Time: 1646230910
Timeout : 7200 (sec)
Verify return code: 0 (ok)
Extended master secret: yes