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SECURITY SCORE
Certificate Information
Subject
C=VN, ST=Hanoi, L=Hai Ba Trung District, O=Vietnam Internet Network Information Center, CN=*.vnnic.vn
Issuer
C=US, O=DigiCert Inc, OU=www.digicert.com, CN=GeoTrust TLS RSA CA G1
Valid From
January 08, 2025
Valid Until
January 28, 2026
83 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
26:FE:74:3E:12:38:31:61:6B:81:79:FB:DF:91:2F:35:B6:85:6F:1E:41:26:EB:B6:86:68:C7:96:46:A1:FA:B6
Alternative Names
Security Configuration
TLS Protocols
TLS 1.2
Forward Secrecy
Limited
(Check cipher configuration)
Warnings
- • TLS 1.3 is not supported (recommended)
CAA Records (Certificate Authority Authorization)
CAA Records
Not Configured
(Any CA can issue certificates)
CAA Issues
- • No CAA records configured - any CA can issue certificates
Recommendations
- • Implement CAA records to restrict which CAs can issue certificates for your domain
- • This adds an extra layer of security against unauthorized certificate issuance
- • Example: Add CAA record 'example.com. CAA 0 issue "letsencrypt.org"'
- • Consider adding 'iodef' record to receive security incident reports