Open
Cached
·
just now
80/100
SECURITY SCORE
Certificate Information
Subject
C=TW, L=Taipel, O=Synology Inc., CN=synology
Issuer
C=TW, L=Taipel, O=Synology Inc., CN=Synology Inc. CA
Valid From
August 10, 2025
Valid Until
August 11, 2026
269 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
F1:2D:B8:46:C9:C5:78:1D:18:FE:50:74:45:E7:D7:6C:6D:E3:46:EA:73:88:62:5C:E8:F0:2F:81:A6:91:B9:95
Alternative Names
Security Configuration
TLS Protocols
TLS 1.2
TLS 1.3
Forward Secrecy
Supported
(Modern clients use PFS)
CAA Records (Certificate Authority Authorization)
CAA Records
Configured
(Restricts certificate issuance)
Current Issuer
Not Authorized
(Potential misconfiguration)
Authorized CAs
comodoca.com
digicert.com
; cansignhttpexchanges=yes
letsencrypt.org
pki.goog
; cansignhttpexchanges=yes
ssl.com
Wildcard CAs
pki.goog
; cansignhttpexchanges=yes
ssl.com
comodoca.com
digicert.com
; cansignhttpexchanges=yes
letsencrypt.org
CAA Issues
- • CRITICAL: Current certificate issuer 'C=TW, L=Taipel, O=Synology Inc., CN=Synology Inc. CA' is NOT authorized by CAA records. Authorized CAs: comodoca.com, digicert.com; cansignhttpexchanges=yes, letsencrypt.org, pki.goog; cansignhttpexchanges=yes, ssl.com
Recommendations
- • Consider using critical flag (flags=128) for stricter CAA enforcement
- • You have authorized 5 CAs - consider limiting to only the CAs you actively use
- • Consider adding 'iodef' records to receive notifications about unauthorized certificate issuance attempts