What technology does tcpdump.org use?

tcpdump.org is built with Apache.

Is tcpdump.org secure (HTTPS)?

Yes. tcpdump.org uses TLS 1.3 with a certificate issued by Sectigo Limited, valid until Nov 1, 2026.

Who hosts tcpdump.org?

Hosting provider information for tcpdump.org is not available yet.

What is tcpdump.org's SEO score?

tcpdump.org scored 60/100 for SEO in the latest analysis (fair).

What is tcpdump.org's overall website score?

tcpdump.org has an overall SiteGraph score of 76/100, combining SEO, performance, security, and accessibility.

tcpdump.org

Home | TCPDUMP & LIBPCAP

Last scanned Jul 26, 2026, 5:48 AM

Overall score

Fair

Summary

Web site of Tcpdump and Libpcap. This website uses Apache. SEO is fair (60/100) and accessibility is good (85/100). Security scores good (85/100) and performance good (80/100). Top issue: Missing canonical link.

Web site of Tcpdump and Libpcap

Top issues to fix

11 issues found · 3 high priority

Missing Content-Security-Policy header
Security
Add a CSP to control which sources can run scripts — the strongest single defense against XSS.
No H1 heading found
SEO
Add exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
Missing viewport meta tag
Accessibility
Add <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.
Missing X-Content-Type-Options header
Security
Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing canonical link
SEO
Add <link rel="canonical"> so search engines know which URL variant to index.
No structured data (JSON-LD) found
SEO
Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.

+5 more issues — details in the sections below.

SEO

6 issue(s) found

Performance

3.06 s

Security

HTTPS & header checks

Accessibility

2 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Organization

Company details published in this site's own structured data.

Web site of Tcpdump and Libpcap

GitHub

Contact

Email, phone, and address published on this site's own pages.

Email: tcpdump-workers-request@lists.tcpdump.org

Technologies

Detected frameworks, languages, and tools.

Apache

Hosting & CDN

Hosting provider: —
CDN provider: —
IP address: —
ASN: —

DNS records

Type	Value
A	—
AAAA	—
MX	—
TXT	—
NS	—
CAA	—
CNAME	—
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.3
Issuer: Sectigo Limited
Subject: *.tcpdump.org
Valid from: Oct 2, 2025
Valid to: Nov 1, 2026
Days until expiry: 96
SAN domains: *.tcpdump.org, tcpdump.org

Security headers

Strict-Transport-SecurityEnabled
Content-Security-PolicyMissing
X-Frame-OptionsEnabled
X-Content-Type-OptionsMissing
Referrer-PolicyMissing
Permissions-PolicyMissing

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 0 · H2 9 · H3 4

Links

29 internal · 42 external · 20 broken

Images

1 total · 0 missing alt

Scripts / Styles

0 scripts · 1 stylesheets

JS / CSS size

0 B · 0 B

Page size

19.0 KB

Robots.txt & Sitemap

robots.txt: Not found
Disallow rules: 0
sitemap.xml: Not found
URLs in sitemap: 0

SEO issues

Missing canonical link
No H1 heading found
No structured data (JSON-LD) found
Missing OpenGraph tags
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://tcpdump.org
Final URL: https://www.tcpdump.org/
HTTP status: 200
HTTP version: HTTP/1.1
Response time: 3.06 s
HTML size: 19.0 KB
Redirect chain: https://tcpdump.org → https://www.tcpdump.org/

See something wrong on this report? Request a correction

Same technology stack

gopay.com

Payment gateway that helps you earn more | GoPay

100

apachegoogle-analyticsphp

AWS

lucerna-chem.ch

Lucerna-Chem AG

100

wordpressapachegoogle-analytics

HOSTPOINT-AS - Hostpoint AG, CH

byside.com

Composable Digital Experience Platform | CoreMedia CMS

100

apachegoogle-analytics

AWS· CloudFront

dgb.de

Deutscher Gewerkschaftsbund | DGB

100

apache

HETZNER-AS - Hetzner Online GmbH, DE

ebi.ac.uk

EMBL-EBI homepage | EMBL-EBI

100

wordpressapachegoogle-analytics

JANET - Jisc Services Limited, GB

piensasolutions.com

Piensa Solutions | Comprar dominios y hosting baratos

100