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SECURITY SCORE
Certificate Information
Subject
C=US, ST=California, L=Sunnyvale, O=Infoblox, OU=Engineering, CN=ns6.dns.uh.edu
Issuer
C=US, ST=California, L=Sunnyvale, O=Infoblox, OU=Engineering, CN=ns6.dns.uh.edu
Valid From
August 10, 2025
Valid Until
August 10, 2026
261 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
5B:F8:7A:77:0D:D0:BC:55:74:11:72:36:17:61:57:8F:EA:F2:AE:E8:23:4B:F0:68:10:41:3E:99:E1:3A:F8:A8
Alternative Names
Security Configuration
TLS Protocols
TLS 1.0
TLS 1.1
TLS 1.2
Forward Secrecy
Limited
(Check cipher configuration)
Warnings
- • TLS 1.3 is not supported (recommended)
- • TLS 1.1 is deprecated and should be disabled
- • TLS 1.0 is deprecated and should be disabled
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