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SECURITY SCORE
Certificate Information
Subject
CN=flsx.org
Issuer
C=US, O=Let's Encrypt, CN=E8
Valid From
November 19, 2025
Valid Until
February 17, 2026
34 days
Public Key
ECDSA
256 bit
(P-256)
Adequate
Signature Algorithm
ECDSA-SHA384
SHA-256 Fingerprint
D9:72:96:2A:E4:FF:9C:7B:F9:C0:4D:1F:C3:17:89:98:AB:FC:6E:FC:4F:3D:9C:B5:8D:BA:A1:1A:02:F1:6F:AA
Alternative Names
Security Configuration
TLS Protocols
TLS 1.2
TLS 1.3
Forward Secrecy
Supported
(Modern clients use PFS)
HTTP Security Headers
Status
Strict-Transport-Security
Present
max-age=31536000;
Content-Security-Policy
Good
default-src; img-src; frame-ancestors; +2 more
default-src 'self' 'unsafe-inline' data:; img-src 'self' https://*.tile.openstreetmap.org data:; frame-ancestors 'self'; report-uri https://flsx99.uriports.com/reports/enforce; report-to default
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin-when-cross-origin
Permissions-Policy
Missing
Not configured
Recommendations
- • Increase HSTS max-age to at least 1 year and add includeSubDomains
- • Strengthen CSP by removing 'unsafe-eval'
- • Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
- • Consider adding Permissions-Policy to control browser features
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