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SECURITY SCORE
Certificate Information
Subject
[email protected], CN=ns5.dns.uh.edu, OU=Network Planning, O=University of Houston, L=Houston, ST=TX, C=US
Issuer
[email protected], CN=ns5.dns.uh.edu, OU=Network Planning, O=University of Houston, L=Houston, ST=TX, C=US
Valid From
August 06, 2024
Valid Until
August 06, 2025
Expired
Public Key
RSA
4096 bit
Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
23:15:95:DB:A2:40:22:D6:C7:25:64:16:C1:08:48:E8:29:E6:8D:B8:9B:25:39:FF:E7:EF:8E:33:CA:3F:F1:1D
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