Open
Cached
·
just now
90/100
SECURITY SCORE
Certificate Information
Subject
C=DE, ST=Nordrhein-Westfalen, O=Universitaet Paderborn, CN=uni-paderborn.de
Issuer
C=GR, O=Hellenic Academic and Research Institutions CA, CN=GEANT TLS RSA 1
Valid From
November 26, 2025
Valid Until
November 26, 2026
313 days
Public Key
RSA
4096 bit
Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
F0:32:C1:E8:31:D0:31:3C:62:49:57:74:26:80:F9:F4:DE:43:44:A2:B8:C6:67:E8:11:34:E9:A2:93:73:84:B7
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=31556926
Content-Security-Policy
Basic
default-src; font-src; img-src; +3 more
default-src 'self' 'unsafe-inline' https://*.uni-paderborn.de https://www.youtube-nocookie.com https://player.vimeo.com https://*.upb.de https://streaming.uni-paderborn.de:2233 https://*.google.com https://public-eur.mkt.dynamics.com https://assets1-eur.mkt.dynamics.com; font-src 'self' https://*.uni-paderborn.de data:; img-src 'self' data: https://pbs.twimg.com https://*.google.com https://www.googleapis.com https://*.uni-paderborn.de https://*.gstatic.com/images; script-src 'self' 'unsafe-inline' 'unsafe-eval' https://*.uni-paderborn.de https://www.google.com https://cse.google.com https://www.google.com/recaptcha/ https://www.gstatic.com/recaptcha/; media-src 'self' https://*.uni-paderborn.de https://*.upb.de https://streaming.uni-paderborn.de:2233 blob:; frame-src https://www.google.com/recaptcha/ https://recaptcha.google.com/recaptcha/ 'self' mailto: tel: https://*.uni-paderborn.de https://www.youtube-nocookie.com https://player.vimeo.com https://*.upb.de https://streaming.uni-paderborn.de:2233 https://*.google.com
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Present
same-origin
Permissions-Policy
Missing
Not configured
Recommendations
- • Increase HSTS max-age to at least 1 year and add includeSubDomains
- • 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