Domain History

cloud.natrohost.ddns.net

Grade A+ · 100/100 · 4/7 security headers present

Security Score

A+

100/ 100

Security Headers

4/ 7

CSP Violations

NoViolations

Issues Found

7Issues

Recommendations

2Available

Security

100 / 100

Excellent security posture with strong CSP protections in place.

Compliance

77 / 100

Mostly compliant but some directives or headers are missing.

Best Practices

65 / 100

Basic practices followed but missing important optimizations.

CSP Analysis

Content Security PolicyHIGH

default-src 'none';base-uri 'none';manifest-src 'self';script-src 'nonce-YMd8PeJXPsVD8qTUBldBegOOcmgkB1ZVZ9DDWrnvFl4=';script-src-elem 'strict-dynamic' 'nonce-YMd8PeJXPsVD8qTUBldBegOOcmgkB1ZVZ9DDWrnvFl4=';style-src 'self' 'unsafe-inline';img-src 'self' data: blob: https://*.tile.openstreetmap.org https://cloud.natrohost.ddns.net;font-src 'self' data:;connect-src 'self';media-src 'self';frame-src 'self' nc: https://cloud.natrohost.ddns.net;frame-ancestors 'self' https://cloud.natrohost.ddns.net;form-action 'self' https://cloud.natrohost.ddns.net

Directive Analysis

default-srcLOW

none

base-uriLOW

none

manifest-srcLOW

self

script-srcLOW

nonce-YMd8PeJXPsVD8qTUBldBegOOcmgkB1ZVZ9DDWrnvFl4=

script-src-elemLOW

strict-dynamic nonce-YMd8PeJXPsVD8qTUBldBegOOcmgkB1ZVZ9DDWrnvFl4=

style-srcHIGH

self unsafe-inline

•Unsafe inline execution allowed in style-src

img-srcLOW

self data: blob: https://*.tile.openstreetmap.org https://cloud.natrohost.ddns.net

•Info: 'data:' URI in img-src

•Info: 'blob:' URI in img-src

font-srcLOW

self data:

•Info: 'data:' URI in font-src

connect-srcLOW

self

media-srcLOW

self

frame-srcLOW

self nc: https://cloud.natrohost.ddns.net

frame-ancestorsLOW

self https://cloud.natrohost.ddns.net

form-actionLOW

self https://cloud.natrohost.ddns.net

Missing Directives

⚠HIGHMissing HIGH directive object-src (Plugin control - should be 'none')

Security Headers

✗Cross-Origin-Opener-PolicyMissing

Isolates the browsing context to prevent Spectre-type side-channel attacks and cross-origin window manipulation.

How to add it:

nginx

add_header Cross-Origin-Opener-Policy "same-origin" always;

apache

Header always set Cross-Origin-Opener-Policy "same-origin"

cloudflare

Rules > Transform Rules > HTTP Response Header Modification > Set Cross-Origin-Opener-Policy to "same-origin"

✗Permissions-PolicyMissing

Restricts which browser features (camera, microphone, geolocation) the page can use, limiting attack surface.

How to add it:

nginx

add_header Permissions-Policy "camera=(), microphone=(), geolocation=()" always;

apache

Header always set Permissions-Policy "camera=(), microphone=(), geolocation=()"

cloudflare

Rules > Transform Rules > HTTP Response Header Modification > Set Permissions-Policy value

✓Referrer-PolicyPresent

no-referrer

Controls how much referrer information is sent with requests, preventing data leaks to third parties.

✓Strict-Transport-SecurityPresent

max-age=31536000;

Forces browsers to use HTTPS for all future requests, preventing man-in-the-middle attacks and SSL stripping.

✓X-Content-Type-OptionsPresent

nosniff

Prevents browsers from MIME-sniffing responses away from the declared Content-Type, blocking drive-by downloads.

✓X-Frame-OptionsPresent

SAMEORIGIN

Prevents the page from being embedded in iframes, protecting against clickjacking attacks.

—X-XSS-ProtectionDeprecated

Legacy XSS filter for older browsers. Modern browsers use CSP instead. Set to "0" to avoid false positives.

2 recommended security headers are missing on cloud.natrohost.ddns.net.

Issues Found

•Info: 'blob:' URI in img-srcinfo
•Info: 'data:' URI in font-srcinfo
•Info: 'data:' URI in img-srcinfo
•Missing HIGH directive object-src (Plugin control - should be 'none')high
•Missing security header: Cross-Origin-Opener-Policymedium
•Missing security header: Permissions-Policymedium
•Unsafe inline execution allowed in style-srchigh

Recommendations

→Add object-src directive with appropriate restrictions
→Consider implementing a stricter Content Security Policy

Beyond headers: infrastructure exposure

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