Open
Cached
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just now
93/100
SECURITY SCORE
Certificate Information
Subject
CN=redirect.public.zoneas.eu
Issuer
C=US, O=Let's Encrypt, CN=R12
Valid From
November 17, 2025
Valid Until
February 15, 2026
89 days
Public Key
RSA
4096 bit
Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
8F:DF:90:67:F5:78:C7:FC:F0:AB:D5:C6:61:D4:75:BE:D3:5D:A9:26:F6:9C:0C:59:82:2E:A3:19:FA:81:46:98
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
Excellent
max-age=31536000; includeSubDomains; preload
Content-Security-Policy
Basic
default-src; script-src; script-src-elem; +6 more
default-src https: wss:; script-src https: 'unsafe-inline' 'unsafe-eval'; script-src-elem https: 'unsafe-inline' data:; style-src https: 'unsafe-inline'; img-src https: data:; font-src https: data:; object-src 'none'; worker-src 'self' blob:; block-all-mixed-content
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin-when-cross-origin
Permissions-Policy
Missing
Not configured
Recommendations
- • Improve CSP by adding more specific directives and removing 'unsafe-inline'
- • 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