| 1. General Results, most used to calculate the result |
| A | name "app.geekhub.com" is subdomain, public suffix is ".com", top-level-domain is ".com", top-level-domain-type is "generic", tld-manager is "VeriSign Global Registry Services", num .com-domains preloaded: 75886 (complete: 199710)
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| A | Good: All ip addresses are public addresses
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| Warning: Only one ip address found: app.geekhub.com has only one ip address.
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| Warning: No ipv6 address found. Ipv6 is the future with a lot of new features. So every domain name should have an ipv6 address. See https://en.wikipedia.org/wiki/IPv6: app.geekhub.com has no ipv6 address.
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| A | Good: No asked Authoritative Name Server had a timeout
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| A | DNS: "Name Error" means: No www-dns-entry defined. This isn't a problem
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| A | Good: destination is https
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| A | Good - only one version with Http-Status 200
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| A | Good: one preferred version: non-www is preferred
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| A | Good: No cookie sent via http.
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| A | Good: every https has a Strict Transport Security Header
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| A | Good: HSTS max-age is long enough, 63072000 seconds = 730 days
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| A | Good: HSTS has includeSubdomains - directive
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| HSTS-Preload-Status: unknown. Domain never included in the Preload-list. Check https://hstspreload.org/ to learn some basics about the Google-Preload-List.
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| A | Good: Some urls with http status 200/404 have a complete Content-Type header (MediaType / MediaSubType + correct charset):1 complete Content-Type - header (3 urls)
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| A | https://app.geekhub.com/ 1.13.8.53
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| Url with Content-Type - parse error: Header: text/vnd.turbo-stream.html; charset=utf-8, parse error: text/vnd.turbo-stream.html; charset=utf-8
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| A | https://1.13.8.53/ 1.13.8.53
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| Url with Content-Type - parse error: Header: text/vnd.turbo-stream.html; charset=utf-8, parse error: text/vnd.turbo-stream.html; charset=utf-8
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| A | http://app.geekhub.com/ 1.13.8.53
| https://app.geekhub.com/
| Correct redirect http - https with the same domain name
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| N | https://1.13.8.53/ 1.13.8.53
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| Error - Certificate isn't trusted, RemoteCertificateNameMismatch
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| Info: Checking all ip addresses of that domain without sending the hostname only one certificate found. Checking all ip addresses and sending the hostname only one certificate found. Both certificates are the same. So that domain doesn't require Server Name Indication (SNI), it's the primary certificate of that set of ip addresses.: Domain app.geekhub.com, 1 ip addresses, 1 different http results.
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| B | No _mta-sts TXT record found (mta-sts: Mail Transfer Agent Strict Transport Security - see RFC 8461). Read the result of server-daten.de (Url-Checks, Comments, Connections and DomainServiceRecords) to see a complete definition. Domainname: _mta-sts.app.geekhub.com
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| 2. Header-Checks (Cross-Origin-* headers are alpha - started 2024-06-05) |
| A | app.geekhub.com 1.13.8.53
| Content-Security-Policy
| Ok: Header without syntax errors found: default-src 'self' https:; font-src 'self' https: data:; img-src 'self' https: data:; object-src 'none'; script-src 'self' https: 'unsafe-inline' 'nonce-'; style-src 'self' https: 'unsafe-inline'
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| F |
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| Bad: default-src with "*" or a scheme found. That allows too much, don't use such a definition.
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| A |
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| Good: default-src without 'unsafe-inline' or 'unsave-eval'.
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| E |
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| Bad: No form-action directive found. Use one to limit the form - action - destinations. form-action is a navigation-directive, so default-src isn't used.
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| E |
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| Bad: No frame-ancestors directive found. Use one to limit the pages allowed to use this page in frame / iframe / object / embed / applet. frame-ancestors is a navigation-directive, so default-src isn't used.
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| E |
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| Bad: No base-uri directive found. Use one to limit the URLs which can be used in a document's <base> element. Because it's a document directive, default-src isn't used, so an own directive is required.
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| A |
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| Good: object-src only with 'none' or 'self' found, no scheme, no other urls. That blocks object / embed / applet - elements.
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| F |
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| Critical: 'nonce-' found, that's a not working nonce declaration. A nonce declaration must look like 'nonce-19d2aa3c-158b-4890-8db1-5c0f0ae059ee' with a random value, minimal 128 bits = 24 byte base64 encoded. Every call must have it's own random value.
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| C |
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| Critical: script-src with 'unsafe-inline' or 'unsafe-eval' and with a nonce found. Ok, better with the nonce, but not really good. Don't use 'unsafe' - declarations.
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| F |
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| Critical: script-src with * or a scheme found. Never allow wildcard - sources.
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| A |
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| Good: script-src without data: schema found. Why is this important? The data: schema allows hidden code injection. Insert <script src='data:application/javascript;base64,YWxlcnQoJ1hTUycpOw=='></script> in your page and see what happens.
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| A |
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| Good: frame-src without data: defined or frame-src missing and the default-src used as fallback not allows the data: schema. That blocks hidden code injection. Insert <iframe src="data:text/html;charset=utf-8;base64,PCFET0NUWVBFIGh0bWw+PGh0bWw+PGJvZHk+PHA+YmVmb3JlPHNjcmlwdCB0eXBlPSJ0ZXh0L2phdmFzY3JpcHQiPmFsZXJ0KCdYU1MnKTwvc2NyaXB0PjxwPmFmdGVyPC9ib2R5PjwvaHRtbD4="></iframe> in your page and see what happens.
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| A |
| X-Content-Type-Options
| Ok: Header without syntax errors found: nosniff
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| A |
| Referrer-Policy
| Ok: Header without syntax errors found: strict-origin-when-cross-origin
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| F | app.geekhub.com 1.13.8.53
| Permissions-Policy
| Critical: Missing Header:
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| A |
| X-Frame-Options
| Ok: Header without syntax errors found: SAMEORIGIN
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| B |
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| Info: Header is deprecated. May not longer work in modern browsers. SAMEORIGIN. Better solution: Use a Content-Security-Policy Header with a frame-ancestors directive. DENY - use 'none', SAMEORIGIN - use 'self'. If you want to allow some domains to frame your page, add these urls.
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| A |
| X-Xss-Protection
| Ok: Header without syntax errors found: 0
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| B |
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| Info: Header is deprecated. May not longer work in modern browsers. 0
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| 3. DNS- and NameServer - Checks |
| A | Info:: 7 Root-climbing DNS Queries required to find all IPv4- and IPv6-Addresses of 2 Name Servers.
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| A | Info:: 7 Queries complete, 7 with IPv6, 0 with IPv4.
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| A | Good: All DNS Queries done via IPv6.
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| Ok (4 - 8):: An average of 3.5 queries per domain name server required to find all ip addresses of all name servers.
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| A | Info:: 2 different Name Servers found: dns11.hichina.com, dns12.hichina.com, 2 Name Servers included in Delegation: dns11.hichina.com, dns12.hichina.com, 2 Name Servers included in 1 Zone definitions: dns11.hichina.com, dns12.hichina.com, 1 Name Servers listed in SOA.Primary: dns11.hichina.com.
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| A | Good: Only one SOA.Primary Name Server found.: dns11.hichina.com.
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| A | Good: SOA.Primary Name Server included in the delegation set.: dns11.hichina.com.
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| A | Good: Consistency between delegation and zone. The set of NS records served by the authoritative name servers must match those proposed for the delegation in the parent zone. Ordered list of name servers: dns11.hichina.com, dns12.hichina.com
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| A | Good: All Name Server Domain Names have a Public Suffix.
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| A | Good: All Name Server Domain Names ending with a Public Suffix have minimal one IPv4- or IPv6 address.
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| A | Good: All Name Server ip addresses are public.
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| A | Good: Minimal 2 different name servers (public suffix and public ip address) found: 2 different Name Servers found
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| Warning: All Name Servers have the same Top Level Domain / Public Suffix. If there is a problem with that Top Level Domain, your domain may be affected. Better: Use Name Servers with different top level domains.: 2 Name Servers, 1 Top Level Domain: com
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| Warning: All Name Servers have the same domain name. If there is a problem with that domain name (or with the name servers of that domain name), your domain may be affected. Better: Use Name Servers with different domain names / different top level domains.: Only one domain name used: hichina.com
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| Warning: All Name Servers from the same Country / IP location.: 2 Name Servers, 1 Countries: CN
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| A | Info: Ipv4-Subnet-list: 16 Name Servers, 4 different subnets (first Byte): 120., 139., 39., 47., 4 different subnets (first two Bytes): 120.76., 139.224., 39.96., 47.118., 4 different subnets (first three Bytes): 120.76.107., 139.224.142., 39.96.153., 47.118.199.
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| A | Good: Name Server IPv4-addresses from different subnet found:
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| A | Info: IPv6-Subnet-list: 2 Name Servers with IPv6, 1 different subnets (first block): 2408:, 1 different subnets (first two blocks): 2408:4009:, 1 different subnets (first three blocks): 2408:4009:0501:, 1 different subnets (first four blocks): 2408:4009:0501:0000:
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| Fatal: All Name Server IPv6 addresses from the same subnet.
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| A | Good: Nameserver supports TCP connections: 9 good Nameserver
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| A | Good: Nameserver supports Echo Capitalization: 9 good Nameserver
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| A | Good: Nameserver supports EDNS with max. 512 Byte Udp payload, message is smaller: 9 good Nameserver
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| Nameserver doesn't pass all EDNS-Checks: dns11.hichina.com: OP100: no result. FLAGS: no result. V1: no result. V1OP100: no result. V1FLAGS: no result. DNSSEC: no result. V1DNSSEC: no result. NSID: no result. COOKIE: no result. CLIENTSUBNET: no result.
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| Nameserver doesn't pass all EDNS-Checks: dns11.hichina.com / 120.76.107.42: OP100: ok. FLAGS: fatal timeout. V1: ok. V1OP100: ok. V1FLAGS: ok. DNSSEC: ok. V1DNSSEC: ok. NSID: ok. COOKIE: ok. CLIENTSUBNET: ok.
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| A | Good: All SOA have the same Serial Number
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| Warning: No CAA entry with issue/issuewild found, every CAA can create a certificate. Read https://en.wikipedia.org/wiki/DNS_Certification_Authority_Authorization to learn some basics about the idea of CAA. Your name server must support such an entry. Not all dns providers support CAA entries.
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| 4. Content- and Performance-critical Checks |
| https://app.geekhub.com/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
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| Warning: Not existing ACME-file, but Server sends 200, not 404 or redirect. May be a problem creating a Letsencrypt certificate. Checking /.well-known/acme-challenge/random-filename - a http status 404 - Not Found - is expected. If your server sends content and a http status 200, the validation file (87 bytes, token, dot and the hash of the public part of the account key) may be invisible, so Letsencrypt can't validate your domain. If it is an application that sends this content, perhaps create an exception, so /.well-known/acme-challenge sends raw files. Or create a redirect to another domain and / or port 443, but your Letsencrypt client must support such a solution. Certbot: Use webroot as authenticator - https://certbot.eff.org/docs/using.html Trouble creating a certificate? Use https://community.letsencrypt.org/ to ask.
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| A | Good: No https + http status 200 with inline CSS / JavaScript found
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| https://app.geekhub.com/ 1.13.8.53
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| Warning: Https result with status 200 found, Html-Content is too big. Should be max. 110 %. May contain inline CSS / JavaScript, too much comments or white space. Re-used ressources - create files with a long Cache-Control max-age header. Remove comments and white space.
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| https://1.13.8.53/ 1.13.8.53
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| Warning: Https result with status 200 found, Html-Content is too big. Should be max. 110 %. May contain inline CSS / JavaScript, too much comments or white space. Re-used ressources - create files with a long Cache-Control max-age header. Remove comments and white space.
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| https://app.geekhub.com/ 1.13.8.53
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| Warning: Https connections (Standard Port 443) found without support of the http/2 protocol via ALPN. Http/2 is the new Http-Version (old: http 1.1) with some important new features. Update your server software so http/2 is available. Only one TCP-connection per Server (that's a performance boost), Header-Compression and Server Pushs are available. Domain Sharding and Inline-CSS/Javascript shouldn't used with http/2.
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| https://app.geekhub.com/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de
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| Warning: Https connections (Standard Port 443) found without support of the http/2 protocol via ALPN. Http/2 is the new Http-Version (old: http 1.1) with some important new features. Update your server software so http/2 is available. Only one TCP-connection per Server (that's a performance boost), Header-Compression and Server Pushs are available. Domain Sharding and Inline-CSS/Javascript shouldn't used with http/2.
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| https://1.13.8.53/ 1.13.8.53
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| Warning: Https connections (Standard Port 443) found without support of the http/2 protocol via ALPN. Http/2 is the new Http-Version (old: http 1.1) with some important new features. Update your server software so http/2 is available. Only one TCP-connection per Server (that's a performance boost), Header-Compression and Server Pushs are available. Domain Sharding and Inline-CSS/Javascript shouldn't used with http/2.
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| A | Info: No img element found, no alt attribute checked
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| A | Good: Domainname is not on the "Specially Designated Nationals And Blocked Persons List" (SDN). That's an US-list of individuals and companies owned or controlled by, or acting for or on behalf of, targeted countries. It also lists individuals, groups, and entities, such as terrorists and narcotics traffickers designated under programs that are not country-specific. Collectively, such individuals and companies are called "Specially Designated Nationals" or "SDNs." Their assets are blocked and U.S. persons are generally prohibited from dealing with them. So if a domain name is on that list, it's impossible to create a Letsencrypt certificate with that domain name. Check the list manual - https://www.treasury.gov/resource-center/sanctions/sdn-list/pages/default.aspx
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| A | Info: Different Server-Headers found
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| A | Duration: 512596 milliseconds, 512.596 seconds
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