HTTP Headers Analysis for https://bwt.cbp.gov

Detected Technologies from Headers

See all in URL Inspect 1

Envoy

HTTP Security Headers

Status

Strict-Transport-Security

Good

max-age=31536000 ; includeSubDomains

Content-Security-Policy

Weak

font-src; img-src; frame-ancestors; +1 more Analyze

Content-Security-Policy-Report-Only

Missing

Not configured Analyze

X-Frame-Options

Good

SAMEORIGIN

X-Content-Type-Options

Good

nosniff

Referrer-Policy

Good

strict-origin

Permissions-Policy

Missing

Not configured

Recommendations

• Consider adding 'preload' to HSTS for maximum security
• Significantly strengthen CSP directives
• Consider adding Permissions-Policy to control browser features

Performance Headers

Connection

Performance

close

connection: close

Caching Headers

Cache-Control

Caching

max-age=0, no-cache, no-store

Expires

Caching

Fri, 04 Sep 2026 23:46:59 GMT

Last-Modified

Caching

Wed, 08 Jul 2026 15:06:16 GMT

Pragma

Caching

no-cache

cache-control: max-age=0, no-cache, no-store
expires: Fri, 04 Sep 2026 23:46:59 GMT
last-modified: Wed, 08 Jul 2026 15:06:16 GMT
pragma: no-cache

Content Headers

Content-Length

Content

1160

Content-Type

Content

text/html

content-length: 1160
content-type: text/html

Server Headers

Server

istio-envoy

server: istio-envoy

CORS Headers

No CORS headers found

Cookies Headers

No cookies headers found

Other Headers

Date

Other

Fri, 04 Sep 2026 23:46:59 GMT

X-Correlation-Id

Other

0HNO1BEF088NT:00000281

X-Envoy-Upstream-Service-Time

Other

1

X-Session-Id

Other

date: Fri, 04 Sep 2026 23:46:59 GMT
x-correlation-id: 0HNO1BEF088NT:00000281
x-envoy-upstream-service-time: 1
x-session-id:

Recommendations

Enable compression (gzip/brotli) to improve performance