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SSL Checker SSL & CSR Decoder CSR Generator SSL Converter

SSL Checker

Submit the Hostname and Port in the fields below. This checker supports SNI and STARTTLS.

Report

Hostname: Doesn't match Common Name or/and SANs
Expired: No (281 days till expiration)
Public Key: We were unable to find any issues in the public key of end-entity certificate
Trusted: We were unable to verify this certificate
Self-Signed: No, the end-entity certificate is not self-signed
Chain Issues: The chain doesn't contain any intermediate certificates
Weak signatures: No, certificates sent by the server were not signed utilizing a weak hash function

DNS Information

CNAME: christopheleclercq.synology.me.
Resolves To: 90.112.210.84
Reverse IP lookup: lfbn-gre-1-254-84.w90-112.abo.wanadoo.fr.
Nameserver: ns-203-b.gandi.net.
Nameserver: ns-77-a.gandi.net.
Nameserver: ns-12-c.gandi.net.

General Information

Common Name: synology
SANs: DNS:synology Total number of SANs: 1
Organization: Synology Inc.
Locality: Taipel
Signature Algorithm: sha256WithRSAEncryption
Key Type: RSA
Key size: 2048 bits
Serial Number: 1678931714fd2b
Not Before: Nov 21, 2024 05:07:30 GMT
Not After: Nov 22, 2025 05:07:30 GMT
Number of certs: 1
Revocation Status: Certificate does not supply CA Issuers information
OCSP Stapling: Not Supported
Server: nginx
HSTS: Not Supported
HPKP: Not Supported

Chain Information

Certificate # 1 - Common Name: synology

Decode this certificate for verbose information →
Subject Common Name synology
Subject Organization Synology Inc.
Issuer Common Name Synology Inc. CA
Issuer Organization Synology Inc.
Not Before: Nov 21, 2024 05:07:30 GMT
Not After: Nov 22, 2025 05:07:30 GMT
Signature Algorithm: sha256WithRSAEncryption
Serial Number: 1678931714fd2b
SHA1 Fingerprint: 55:FB:86:A7:88:73:EE:A4:1E:BA:7F:2E:0D:74:FE:F5:EF:04:42:CF
MD5 Fingerprint: 32:F9:91:9A:8E:C4:13:24:8F:A3:CE:E2:EA:06:7B:31

OpenSSL Handshake

depth=0 C = TW, L = Taipel, O = Synology Inc., CN = synology
verify error:num=20:unable to get local issuer certificate
verify return:1
depth=0 C = TW, L = Taipel, O = Synology Inc., CN = synology
verify error:num=21:unable to verify the first certificate
verify return:1
depth=0 C = TW, L = Taipel, O = Synology Inc., CN = synology
verify return:1
CONNECTED(00000003)
OCSP response: no response sent
---
Certificate chain
 0 s:C = TW, L = Taipel, O = Synology Inc., CN = synology
   i:C = TW, L = Taipel, O = Synology Inc., CN = Synology Inc. CA
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
---
Server certificate
subject=C = TW, L = Taipel, O = Synology Inc., CN = synology

issuer=C = TW, L = Taipel, O = Synology Inc., CN = Synology Inc. CA

---
No client certificate CA names sent
Peer signing digest: SHA256
Peer signature type: RSA-PSS
Server Temp Key: X25519, 253 bits
---
SSL handshake has read 1574 bytes and written 408 bytes
Verification error: unable to verify the first certificate
---
New, TLSv1.3, Cipher is TLS_AES_256_GCM_SHA384
Server public key is 2048 bit
Secure Renegotiation IS NOT supported
Compression: NONE
Expansion: NONE
No ALPN negotiated
Early data was not sent
Verify return code: 21 (unable to verify the first certificate)
---
DONE