Open
Cached
·
just now
87/100
SECURITY SCORE
Certificate Information
Subject
C=DE, ST=Nordrhein-Westfalen, L=Bonn, O=Deutsche Telekom AG, CN=*.hier-im-netz.de
Issuer
C=DE, O=Deutsche Telekom Security GmbH, CN=Telekom Security ServerID OV Class 2 CA
Valid From
December 17, 2024
Valid Until
December 21, 2025
38 days
Public Key
RSA
4096 bit
Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
DC:9A:AB:14:A4:AF:81:CC:B9:1B:1B:13:F0:5D:5A:59:2F:BB:9A:3E:5F:E6:55:A4:A5:33:C9:29:D0:91:CC:9D
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
Good
max-age=31536000; includeSubDomains
Content-Security-Policy
Weak
frame-ancestors
X-Frame-Options
Excellent
DENY
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
- • Consider adding 'preload' to HSTS for maximum security
- • Significantly strengthen CSP directives
- • Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
- • 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