Domain History

network.satnogs.org

Grade C · 64/100 · 6/7 security headers present

Security Score

64/ 100

Security Headers

6/ 7

CSP Violations

NoViolations

Issues Found

16Issues

Recommendations

7Available

Security

64 / 100

Moderate security gaps found — unsafe directives or weak source restrictions.

Compliance

75 / 100

Mostly compliant but some directives or headers are missing.

Best Practices

15 / 100

Best practices largely absent — review CSP configuration.

CSP Analysis

Content Security PolicyHIGH

child-src blob:; script-src 'self' https://*.google-analytics.com 'unsafe-eval' https://network-satnogs.freetls.fastly.net; style-src 'self' 'unsafe-inline' https://network-satnogs.freetls.fastly.net; img-src 'self' https://*.gravatar.com https://*.mapbox.com https://*.satnogs.org https://*.wasabisys.com https://*.google-analytics.com data: blob: https://db-satnogs.freetls.fastly.net https://network-satnogs.freetls.fastly.net; worker-src blob:; frame-src blob:; default-src 'self' https://*.mapbox.com https://archive.org https://*.archive.org https://*.wasabisys.com https://network-satnogs.freetls.fastly.net

Directive Analysis

child-srcLOW

blob:

•Info: 'blob:' URI in child-src

script-srcHIGH

self https://*.google-analytics.com unsafe-eval https://network-satnogs.freetls.fastly.net

•Unsafe eval() execution allowed in script-src

•No nonces or hashes used for script-src

style-srcHIGH

self unsafe-inline https://network-satnogs.freetls.fastly.net

•Unsafe inline execution allowed in style-src

img-srcLOW

self https://*.gravatar.com https://*.mapbox.com https://*.satnogs.org https://*.wasabisys.com https://*.google-analytics.com data: blob: https://db-satnogs.freetls.fastly.net https://network-satnogs.freetls.fastly.net

•Info: 'data:' URI in img-src

•Info: 'blob:' URI in img-src

worker-srcMEDIUM

blob:

•Info: 'blob:' URI in worker-src

•RISK: 'blob:' in worker-src allows creation of workers from dynamic blob content

frame-srcLOW

blob:

•Info: 'blob:' URI in frame-src

default-srcLOW

self https://*.mapbox.com https://archive.org https://*.archive.org https://*.wasabisys.com https://network-satnogs.freetls.fastly.net

Missing Directives

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

⚠HIGHMissing HIGH directive base-uri (Base URI control - prevents base tag injection)

⚠HIGHMissing HIGH directive frame-ancestors (Framing control - prevents clickjacking)

⚠MEDIUMMissing MEDIUM directive form-action (Form submission control - prevents form hijacking)

⚠MEDIUMMissing MEDIUM directive connect-src (API/XHR control - prevents data exfiltration)

⚠MEDIUMMissing MEDIUM directive font-src (Font source control)

Security Headers

✓Cross-Origin-Opener-PolicyPresent

same-origin

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

✗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

same-origin

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

✓Strict-Transport-SecurityPresent

max-age=31536000; includeSubDomains

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

DENY

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

✓X-XSS-ProtectionPresent

1; mode=block

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

1 recommended security header is missing on network.satnogs.org.

Issues Found

•Info: 'blob:' URI in child-srcinfo
•Info: 'blob:' URI in frame-srcinfo
•Info: 'blob:' URI in img-srcinfo
•Info: 'blob:' URI in worker-srcinfo
•Info: 'data:' URI in img-srcinfo
•Missing HIGH directive base-uri (Base URI control - prevents base tag injection)high
•Missing HIGH directive frame-ancestors (Framing control - prevents clickjacking)high
•Missing HIGH directive object-src (Plugin control - should be 'none')high
•Missing MEDIUM directive connect-src (API/XHR control - prevents data exfiltration)medium
•Missing MEDIUM directive font-src (Font source control)medium
•Missing MEDIUM directive form-action (Form submission control - prevents form hijacking)medium
•Missing security header: Permissions-Policymedium
•No nonces or hashes used for script-srcmedium
•RISK: 'blob:' in worker-src allows creation of workers from dynamic blob contentmedium
•Unsafe eval() execution allowed in script-srchigh
•Unsafe inline execution allowed in style-srchigh

Recommendations

→Add base-uri directive with appropriate restrictions
→Add connect-src directive with appropriate restrictions
→Add font-src directive with appropriate restrictions
→Add form-action directive with appropriate restrictions
→Add frame-ancestors directive with appropriate restrictions
→Add object-src directive with appropriate restrictions
→Consider implementing a stricter Content Security Policy

Beyond headers: infrastructure exposure

via OSN, our sister project

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