Open
Cached
·
just now
91/100
SECURITY SCORE
Certificate Information
Subject
CN=www-fastly.debian.org
Issuer
C=US, O=Let's Encrypt, CN=R12
Valid From
September 23, 2025
Valid Until
December 22, 2025
48 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
B6:83:4D:C3:F7:47:77:A4:F9:1A:E5:74:EC:5D:13:55:18:63:9E:E7:C2:92:33:81:6A:04:05:47:DB:52:D4:C4
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=15552000
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Good
sameorigin
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
no-referrer
Permissions-Policy
Present
interest-cohort=()
Recommendations
- • Increase HSTS max-age to at least 1 year and add includeSubDomains
- • Add Content-Security-Policy header to prevent XSS attacks
CAA Records (Certificate Authority Authorization)
CAA Records
Configured
(Restricts certificate issuance)
Current Issuer
Authorized
(Matches CAA policy)
Authorized CAs
letsencrypt.org
; validationmethods=dns-01;accounturi=https://acme-v02.api.letsencrypt.org/acme/acct/346607
Incident Reporting
mailto:[email protected]
Recommendations
- • Consider adding 'issuewild' records to control wildcard certificate issuance