Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.DCDN & DeliveryActionNo CDN detectedFIX
Consider using a CDN to improve global delivery speed and reduce origin load.
CIPv6 ReadinessActionNo IPv6 supportREVIEW
IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.
No AAAA records — same impact as 'no IPv6 (AAAA) records'; IPv6-preferring clients pay extra latency falling back to IPv4.
Source: Google IPv6 stats
BCrawlabilityrobots.txt present, no sitemapREVIEW
A sitemap helps search engines discover and index your pages more efficiently.
No sitemap.xml — Google relies on crawl-graph discovery alone, slowing indexing of deep or fresh URLs.
Learn more ▾ ▴
A sitemap accelerates Google's discovery of new and updated content. Most CMSes auto-generate one; static-site frameworks need a build-step plugin. Reference it from robots.txt and submit in Search Console to confirm Google can fetch it.
Source: sitemaps.org / Google Search Central
Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.
robots.txt omits Sitemap: directive — crawlers must fetch /sitemap.xml by convention; reliable but missing the explicit hint.
Source: sitemaps.org
# contact sourcemaster@sourceware.org for questions.
# see http://www.robotstxt.org/
# for information about the file format.
User-agent: Scooter
Disallow: /ml/
User-agent: Test Crawler
Disallow: /
User-agent: DigExt
Disallow: /
User-agent: CW Crawler
Disallow: /
User-agent: Sosospider
Disallow: /
User-agent: Googlebot
Disallow: donations.html
User-agent: *
Disallow: /bugzilla/
Disallow: /cgi-bin/
Disallow: /cgi/
Disallow: /cgi2-bin/
Disallow: /ml/overseers/
Disallow: /packages/
Disallow: /snapshots/
Disallow: /viewcvs/
Disallow: /viewvc/
Disallow: /git/
Disallow: /git-cygwin-packages/
Disallow: /cgit/
Disallow: setup-x86.exe
Disallow: setup-x86_64.exe
Disallow: mirrors.lst
Crawl-Delay: 60
No sitemap found
Adding a sitemap helps search engines discover your pages.
CURL VariantsActionwww/non-www, trailing slash, HTTP→HTTPSREVIEW
www / non-www
Inconsistent — duplicate content risk
HTTP → HTTPS
Use 301 (permanent) instead of 302 (temporary)
BTLS Certificate Expiry & Recommendations44 days until leaf cert expires — 5 issues to addressREVIEW
Certificate validity
Recommended actions
- Extend HSTS max-age to at least 31536000 (1 year) to meet the preload list criteria
- Add includeSubDomains to the HSTS directive
- Add the preload directive and submit to hstspreload.org once max-age + includeSubDomains are in place
- Enable DNSSEC on your domain for DNS spoofing protection
- Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
A+DNS Records1 A records, 37 ms lookupPASS
| A | 38.145.34.32 |
| AAAA | — |
| CNAME | — |
| NS | dns4.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net, dns1.p01.nsone.net |
| MX | 10 sourceware.org |
| TXT | 00918568 domainadmin@redhat.com SPF v=spf1 a mx include:sourceware.org -all |
| CAA | Lookup not available with standard resolver |
Multiple A records provide failover if one server goes down.
Single A record means a single point of failure — if that IP goes down, your site is unreachable until DNS TTL expires.
Learn more ▾ ▴
Add multiple A records for round-robin failover, or use a managed DNS provider with health-checked failover (Route 53, Cloudflare, NS1). Short TTL (60-300s) lets clients recover faster on outages.
Source: SRE practice / DNS architecture
CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.
Informational: CAA (Certification Authority Authorization) records weren't checked in this scan.
A+Redirect ChainNo redirects — direct accessPASS
https://cygwin.com
335 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://cygwin.com | 200 | 335 ms | HTTP/1.1 | Apache/2.4.37 (Red Hat Enterprise Linux) OpenSSL/1.1.1k mod_qos/11.74 mod_wsgi/4.6.4 Python/3.6 mod_perl/2.0.12 Perl/v5.26.3 |
A+Domain Intelligencecygwin.com — via Nom-iq Ltd. dba COM LAUDE, 26 years, 8 months old, hosted on REDHAT-3 - Red Hat, Inc., USPASS
177 days
December 9, 2026
44 days
Issued by Let's Encrypt
26 years, 8 months
Registered December 9, 1999
Not enabled
Protects against DNS spoofing
REDHAT-3 - Red Hat, Inc., US
ASN AS21785
38.145.34.32
Nom-iq Ltd. dba COM LAUDE
Expiry timeline
Recommended actions
- Enable DNSSEC to protect visitors from DNS spoofing
- Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.
Without DNSSEC, an attacker who can poison your DNS can hijack your domain — and SSL certs alone don't stop them.
Learn more ▾ ▴
DNSSEC adds cryptographic signatures to DNS records, preventing forged responses from poisoning resolver caches. Without it, an attacker who controls the network path can redirect your domain to a malicious server before any HTTPS handshake happens. Most modern registrars (Cloudflare, Google Domains, Route 53) enable it with one toggle.
Source: ICANN / RFC 4033
The domain can be transferred without an unlock step. Enable registrar lock (clientTransferProhibited) in your registrar's control panel to protect against unauthorized or accidental transfers.
Without registrar lock, an attacker who phishes your registrar credentials can transfer the domain in minutes — total brand hijack.
Learn more ▾ ▴
Registrar lock (clientTransferProhibited, clientUpdateProhibited, clientDeleteProhibited) requires extra verification before any transfer/update/delete. Every major registrar offers it free. Combined with 2FA on your registrar account, it's the strongest defense against domain hijacking.
Source: ICANN / domain-security best practice