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 70/100 for SEO in the latest analysis (fair).

What is tcpdump.org's overall website score?

tcpdump.org has an overall SiteGraph score of 84/100, combining SEO, performance, security, and accessibility.

Has tcpdump.org's score changed over time?

tcpdump.org's overall score has improved by 8 points (from 76 to 84) since Jul 26, 2026.

tcpdump.org

Home | TCPDUMP & LIBPCAP

Last scanned Aug 6, 2026, 4:00 AM · 9 views

Overall score

Great

Summary

Web site of Tcpdump and Libpcap. This website uses Apache. SEO is fair (70/100) and accessibility is good (85/100). Security scores good (85/100) and performance excellent (100/100). Top issue: Missing canonical link.

Web site of Tcpdump and Libpcap

United Kingdom

Top issues to fix

7 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.

+1 more issue — details in the sections below.

SEO

4 issue(s) found

100

Performance

361 ms

Security

HTTPS & header checks

Accessibility

2 issue(s) found

Score history

+8 overall since Jul 26, 2026

Overall: 84
SEO: 70
Security: 85
Performance: 100
Accessibility: 85

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: 62.100.206.148
ASN: AS12488 ()

DNS records

Type	Value
A	62.100.206.148
AAAA	2a03:2800:500::625
MX	—
TXT	v=spf1 a -all
NS	—
CAA	—
CNAME	flagpole-4.tcpdump.org
IPv6 support	Yes

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: 87
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 · 0 broken

Images

1 total · 0 missing alt

Scripts / Styles

0 scripts · 1 stylesheets

JS / CSS size

0 B · 7.0 KB

Page size

19.0 KB

Robots.txt & Sitemap

robots.txt: Found
Disallow rules: 25
sitemap.xml: Found
URLs in sitemap: 26

SEO issues

Missing canonical link
No H1 heading found
No structured data (JSON-LD) found
Missing OpenGraph tags

Scan details

Requested URL: https://tcpdump.org
Final URL: https://www.tcpdump.org/
HTTP status: 200
HTTP version: HTTP/1.1
Response time: 361 ms
HTML size: 19.0 KB
Redirect chain: https://tcpdump.org → https://www.tcpdump.org/

See something wrong on this report? Request a correction

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Frequently asked questions

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 70/100 for SEO in the latest analysis (fair).
What is tcpdump.org's overall website score?: tcpdump.org has an overall SiteGraph score of 84/100, combining SEO, performance, security, and accessibility.
Has tcpdump.org's score changed over time?: tcpdump.org's overall score has improved by 8 points (from 76 to 84) since Jul 26, 2026.