| 1. General Results, most used to calculate the result |
| A | name "dex.uneb.br" is subdomain, public suffix is ".br", top-level-domain is ".br", top-level-domain-type is "country-code", Country is Brazil, tld-manager is "Comite Gestor da Internet no Brasil", num .br-domains preloaded: 3198 (complete: 245733)
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| A | Good: All ip addresses are public addresses
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| Warning: Only one ip address found: dex.uneb.br has only one ip address.
|
| 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: dex.uneb.br 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 | https://dex.uneb.br/home
| https://dex.uneb.br/home/login
| Correct redirect https to https
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| A | https://dex.uneb.br/home/login
| https://dex.uneb.br/home/login/login
| Correct redirect https to https
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| A | https://dex.uneb.br/home/login/login
| https://dex.uneb.br/home/login/login/login
| Correct redirect https to https
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| A | https://dex.uneb.br/ 200.128.3.79
| https://dex.uneb.br/home
| Correct redirect https to https
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| A | Good: destination is https
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| A | Good: No cookie sent via http.
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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: All urls with http status 200/404 have a complete Content-Type header (MediaType / MediaSubType + correct charset)
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| http://dex.uneb.br/ 200.128.3.79
| 0;url=/home
| Info: Non-standard Header "Refresh" found.
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| https://dex.uneb.br/ 200.128.3.79
| 0;url=/home
| Info: Non-standard Header "Refresh" found.
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| B | https://dex.uneb.br/home
|
| Missing HSTS-Header
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| B | https://dex.uneb.br/home/login
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| Missing HSTS-Header
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| B | https://dex.uneb.br/home/login/login
|
| Missing HSTS-Header
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| B | https://dex.uneb.br/home/login/login/login
|
| Missing HSTS-Header
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| B | https://dex.uneb.br/ 200.128.3.79
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| Missing HSTS-Header
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| D | http://dex.uneb.br/home
| http://dex.uneb.br/home/login
| Wrong redirect one domain http to other domain http. First redirect to https without changing the domain, so no new dns query is required. So the server can send the HSTS header. That's fundamental using HSTS (Http Strict Transport Security). First step: Add correct redirects http ⇒ https. Perhaps in your port 80 vHost something like "RewriteEngine on" + "RewriteRule ^ https://%{SERVER_NAME}%{REQUEST_URI} [END,QSA,R=permanent]" (two rows, without the "). Don't add this in your port 443 vHost, that would create a loop. Then recheck your domain, should be Grade C. There is the rule to select one https version as preferred version.
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| D | http://dex.uneb.br/home/login
| http://dex.uneb.br/home/login/login
| Wrong redirect one domain http to other domain http. First redirect to https without changing the domain, so no new dns query is required. So the server can send the HSTS header. That's fundamental using HSTS (Http Strict Transport Security). First step: Add correct redirects http ⇒ https. Perhaps in your port 80 vHost something like "RewriteEngine on" + "RewriteRule ^ https://%{SERVER_NAME}%{REQUEST_URI} [END,QSA,R=permanent]" (two rows, without the "). Don't add this in your port 443 vHost, that would create a loop. Then recheck your domain, should be Grade C. There is the rule to select one https version as preferred version.
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| D | http://dex.uneb.br/home/login/login
| http://dex.uneb.br/home/login/login/login
| Wrong redirect one domain http to other domain http. First redirect to https without changing the domain, so no new dns query is required. So the server can send the HSTS header. That's fundamental using HSTS (Http Strict Transport Security). First step: Add correct redirects http ⇒ https. Perhaps in your port 80 vHost something like "RewriteEngine on" + "RewriteRule ^ https://%{SERVER_NAME}%{REQUEST_URI} [END,QSA,R=permanent]" (two rows, without the "). Don't add this in your port 443 vHost, that would create a loop. Then recheck your domain, should be Grade C. There is the rule to select one https version as preferred version.
|
| D | http://dex.uneb.br/home/login/login/login
| http://dex.uneb.br/home/login/login/login/login
| Wrong redirect one domain http to other domain http. First redirect to https without changing the domain, so no new dns query is required. So the server can send the HSTS header. That's fundamental using HSTS (Http Strict Transport Security). First step: Add correct redirects http ⇒ https. Perhaps in your port 80 vHost something like "RewriteEngine on" + "RewriteRule ^ https://%{SERVER_NAME}%{REQUEST_URI} [END,QSA,R=permanent]" (two rows, without the "). Don't add this in your port 443 vHost, that would create a loop. Then recheck your domain, should be Grade C. There is the rule to select one https version as preferred version.
|
| D | http://dex.uneb.br/ 200.128.3.79
| http://dex.uneb.br/home
| Wrong redirect one domain http to other domain http. First redirect to https without changing the domain, so no new dns query is required. So the server can send the HSTS header. That's fundamental using HSTS (Http Strict Transport Security). First step: Add correct redirects http ⇒ https. Perhaps in your port 80 vHost something like "RewriteEngine on" + "RewriteRule ^ https://%{SERVER_NAME}%{REQUEST_URI} [END,QSA,R=permanent]" (two rows, without the "). Don't add this in your port 443 vHost, that would create a loop. Then recheck your domain, should be Grade C. There is the rule to select one https version as preferred version.
|
| N | https://dex.uneb.br/home
| https://dex.uneb.br/home/login
| Error - Certificate isn't trusted, RemoteCertificateNameMismatch
|
| N | https://dex.uneb.br/ 200.128.3.79
| https://dex.uneb.br/home
| Error - Certificate isn't trusted, RemoteCertificateNameMismatch
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| N | https://200.128.3.79/ 200.128.3.79
|
| Error - Certificate isn't trusted, RemoteCertificateNameMismatch
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| O | dex.uneb.br / 200.128.3.79 / 443
|
| Old connection: Cipher Suites without Forward Secrecy (FS) found. Remove all of these Cipher Suites, use only Cipher Suites with Forward Secrecy: Starting with ECDHE- or DHE - the last "E" says: "ephemeral". Or use Tls.1.3, then all Cipher Suites use FS. 6 Cipher Suites without Forward Secrecy found
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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 dex.uneb.br, 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.dex.uneb.br
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| 2. Header-Checks (Cross-Origin-* headers are alpha - started 2024-06-05) |
| U |
|
| No https result with http status 2** or 4** (standard-check) found, no header checked.
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| 3. DNS- and NameServer - Checks |
| A | Info:: 14 Root-climbing DNS Queries required to find all IPv4- and IPv6-Addresses of 5 Name Servers.
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| A | Info:: 14 Queries complete, 14 with IPv6, 0 with IPv4.
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| A | Good: All DNS Queries done via IPv6.
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| A | Good: Some ip addresses of name servers found with the minimum of two DNS Queries. One to find the TLD-Zone, one to ask the TLD-Zone.porto.uneb.br (200.128.3.106), porto.uneb.br (200.128.3.106)
|
| A | Good (1 - 3.0):: An average of 2.8 queries per domain name server required to find all ip addresses of all name servers.
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| A | Info:: 5 different Name Servers found: ns1.pop-ba.rnp.br, ns2.pop-ba.rnp.br, porto.uneb.br, sol.uneb.br, vila.uneb.br, 3 Name Servers included in Delegation: ns1.pop-ba.rnp.br, ns2.pop-ba.rnp.br, porto.uneb.br, 3 Name Servers included in 1 Zone definitions: porto.uneb.br, sol.uneb.br, vila.uneb.br, 1 Name Servers listed in SOA.Primary: porto.uneb.br.
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| A | Good: Only one SOA.Primary Name Server found.: porto.uneb.br.
|
| A | Good: SOA.Primary Name Server included in the delegation set.: porto.uneb.br.
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| X | Fatal: Inconsistency 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. Read https://www.iana.org/help/nameserver-requirements and send it to your Name Server Hoster.: ns1.pop-ba.rnp.br (200.128.0.11): Delegation: ns1.pop-ba.rnp.br, ns2.pop-ba.rnp.br, porto.uneb.br, Zone: porto.uneb.br, sol.uneb.br, vila.uneb.br. Name Servers defined in Delegation, missing in Zone: ns1.pop-ba.rnp.br, ns2.pop-ba.rnp.br.Name Servers defined in Zone, missing in Delegation: sol.uneb.br, vila.uneb.br.
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| X | Fatal: Inconsistency 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. Read https://www.iana.org/help/nameserver-requirements and send it to your Name Server Hoster.: ns1.pop-ba.rnp.br (2801:86:0:4::11): Delegation: ns1.pop-ba.rnp.br, ns2.pop-ba.rnp.br, porto.uneb.br, Zone: porto.uneb.br, sol.uneb.br, vila.uneb.br. Name Servers defined in Delegation, missing in Zone: ns1.pop-ba.rnp.br, ns2.pop-ba.rnp.br.Name Servers defined in Zone, missing in Delegation: sol.uneb.br, vila.uneb.br.
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| X | Fatal: Inconsistency 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. Read https://www.iana.org/help/nameserver-requirements and send it to your Name Server Hoster.: ns1.pop-ba.rnp.br (200.128.0.11): Delegation: ns1.pop-ba.rnp.br, ns2.pop-ba.rnp.br, porto.uneb.br, Zone: porto.uneb.br, sol.uneb.br, vila.uneb.br. Name Servers defined in Delegation, missing in Zone: ns1.pop-ba.rnp.br, ns2.pop-ba.rnp.br.Name Servers defined in Zone, missing in Delegation: sol.uneb.br, vila.uneb.br.
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| X | Fatal: Inconsistency 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. Read https://www.iana.org/help/nameserver-requirements and send it to your Name Server Hoster.: ns1.pop-ba.rnp.br (2801:86:0:4::11): Delegation: ns1.pop-ba.rnp.br, ns2.pop-ba.rnp.br, porto.uneb.br, Zone: porto.uneb.br, sol.uneb.br, vila.uneb.br. Name Servers defined in Delegation, missing in Zone: ns1.pop-ba.rnp.br, ns2.pop-ba.rnp.br.Name Servers defined in Zone, missing in Delegation: sol.uneb.br, vila.uneb.br.
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| X | Fatal: Inconsistency 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. Read https://www.iana.org/help/nameserver-requirements and send it to your Name Server Hoster.: ns2.pop-ba.rnp.br (200.128.0.12): Delegation: ns1.pop-ba.rnp.br, ns2.pop-ba.rnp.br, porto.uneb.br, Zone: porto.uneb.br, sol.uneb.br, vila.uneb.br. Name Servers defined in Delegation, missing in Zone: ns1.pop-ba.rnp.br, ns2.pop-ba.rnp.br.Name Servers defined in Zone, missing in Delegation: sol.uneb.br, vila.uneb.br.
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| X | Fatal: Inconsistency 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. Read https://www.iana.org/help/nameserver-requirements and send it to your Name Server Hoster.: ns2.pop-ba.rnp.br (2801:86:0:4::12): Delegation: ns1.pop-ba.rnp.br, ns2.pop-ba.rnp.br, porto.uneb.br, Zone: porto.uneb.br, sol.uneb.br, vila.uneb.br. Name Servers defined in Delegation, missing in Zone: ns1.pop-ba.rnp.br, ns2.pop-ba.rnp.br.Name Servers defined in Zone, missing in Delegation: sol.uneb.br, vila.uneb.br.
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| X | Fatal: Inconsistency 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. Read https://www.iana.org/help/nameserver-requirements and send it to your Name Server Hoster.: ns2.pop-ba.rnp.br (200.128.0.12): Delegation: ns1.pop-ba.rnp.br, ns2.pop-ba.rnp.br, porto.uneb.br, Zone: porto.uneb.br, sol.uneb.br, vila.uneb.br. Name Servers defined in Delegation, missing in Zone: ns1.pop-ba.rnp.br, ns2.pop-ba.rnp.br.Name Servers defined in Zone, missing in Delegation: sol.uneb.br, vila.uneb.br.
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| X | Fatal: Inconsistency 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. Read https://www.iana.org/help/nameserver-requirements and send it to your Name Server Hoster.: ns2.pop-ba.rnp.br (2801:86:0:4::12): Delegation: ns1.pop-ba.rnp.br, ns2.pop-ba.rnp.br, porto.uneb.br, Zone: porto.uneb.br, sol.uneb.br, vila.uneb.br. Name Servers defined in Delegation, missing in Zone: ns1.pop-ba.rnp.br, ns2.pop-ba.rnp.br.Name Servers defined in Zone, missing in Delegation: sol.uneb.br, vila.uneb.br.
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| X | Fatal: Inconsistency 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. Read https://www.iana.org/help/nameserver-requirements and send it to your Name Server Hoster.: porto.uneb.br (200.128.3.106): Delegation: ns1.pop-ba.rnp.br, ns2.pop-ba.rnp.br, porto.uneb.br, Zone: porto.uneb.br, sol.uneb.br, vila.uneb.br. Name Servers defined in Delegation, missing in Zone: ns1.pop-ba.rnp.br, ns2.pop-ba.rnp.br.Name Servers defined in Zone, missing in Delegation: sol.uneb.br, vila.uneb.br.
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| X | Fatal: Inconsistency 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. Read https://www.iana.org/help/nameserver-requirements and send it to your Name Server Hoster.: porto.uneb.br (200.128.3.106): Delegation: ns1.pop-ba.rnp.br, ns2.pop-ba.rnp.br, porto.uneb.br, Zone: porto.uneb.br, sol.uneb.br, vila.uneb.br. Name Servers defined in Delegation, missing in Zone: ns1.pop-ba.rnp.br, ns2.pop-ba.rnp.br.Name Servers defined in Zone, missing in Delegation: sol.uneb.br, vila.uneb.br.
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| X | Fatal: Inconsistency 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. Read https://www.iana.org/help/nameserver-requirements and send it to your Name Server Hoster.: sol.uneb.br (200.128.3.108): Delegation: ns1.pop-ba.rnp.br, ns2.pop-ba.rnp.br, porto.uneb.br, Zone: porto.uneb.br, sol.uneb.br, vila.uneb.br. Name Servers defined in Delegation, missing in Zone: ns1.pop-ba.rnp.br, ns2.pop-ba.rnp.br.Name Servers defined in Zone, missing in Delegation: sol.uneb.br, vila.uneb.br.
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| X | Fatal: Inconsistency 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. Read https://www.iana.org/help/nameserver-requirements and send it to your Name Server Hoster.: sol.uneb.br (200.128.3.108): Delegation: ns1.pop-ba.rnp.br, ns2.pop-ba.rnp.br, porto.uneb.br, Zone: porto.uneb.br, sol.uneb.br, vila.uneb.br. Name Servers defined in Delegation, missing in Zone: ns1.pop-ba.rnp.br, ns2.pop-ba.rnp.br.Name Servers defined in Zone, missing in Delegation: sol.uneb.br, vila.uneb.br.
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| X | Fatal: Inconsistency 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. Read https://www.iana.org/help/nameserver-requirements and send it to your Name Server Hoster.: vila.uneb.br (200.128.3.107): Delegation: ns1.pop-ba.rnp.br, ns2.pop-ba.rnp.br, porto.uneb.br, Zone: porto.uneb.br, sol.uneb.br, vila.uneb.br. Name Servers defined in Delegation, missing in Zone: ns1.pop-ba.rnp.br, ns2.pop-ba.rnp.br.Name Servers defined in Zone, missing in Delegation: sol.uneb.br, vila.uneb.br.
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| X | Fatal: Inconsistency 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. Read https://www.iana.org/help/nameserver-requirements and send it to your Name Server Hoster.: vila.uneb.br (200.128.3.107): Delegation: ns1.pop-ba.rnp.br, ns2.pop-ba.rnp.br, porto.uneb.br, Zone: porto.uneb.br, sol.uneb.br, vila.uneb.br. Name Servers defined in Delegation, missing in Zone: ns1.pop-ba.rnp.br, ns2.pop-ba.rnp.br.Name Servers defined in Zone, missing in Delegation: sol.uneb.br, vila.uneb.br.
|
| A | Good: All Name Server Domain Names have a Public Suffix.
|
| 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 | Info: Ipv4-Subnet-list: 5 Name Servers, 1 different subnets (first Byte): 200., 1 different subnets (first two Bytes): 200.128., 2 different subnets (first three Bytes): 200.128.0., 200.128.3.
|
| A | Good: Name Server IPv4-addresses from different subnet found:
|
| A | Info: IPv6-Subnet-list: 2 Name Servers with IPv6, 1 different subnets (first block): 2801:, 1 different subnets (first two blocks): 2801:0086:, 1 different subnets (first three blocks): 2801:0086:0000:, 1 different subnets (first four blocks): 2801:0086:0000:0004:
|
| Fatal: All Name Server IPv6 addresses from the same subnet.
|
| A | Good: Nameserver supports TCP connections: 14 good Nameserver
|
| A | Good: Nameserver supports Echo Capitalization: 14 good Nameserver
|
| A | Good: Nameserver supports EDNS with max. 512 Byte Udp payload, message is smaller: 14 good Nameserver
|
| Nameserver doesn't pass all EDNS-Checks: porto.uneb.br: 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: vila.uneb.br / 200.128.3.107: OP100: fatal timeout. FLAGS: ok. V1: fatal timeout. V1OP100: ok. V1FLAGS: ok. DNSSEC: ok. V1DNSSEC: ok. NSID: fatal timeout. COOKIE: ok. CLIENTSUBNET: ok.
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| Nameserver doesn't pass all EDNS-Checks: vila.uneb.br / 200.128.3.107: OP100: fatal timeout. FLAGS: ok. V1: ok. V1OP100: ok. V1FLAGS: fatal timeout. DNSSEC: ok. V1DNSSEC: ok. NSID: ok. COOKIE: ok. CLIENTSUBNET: ok.
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| A | Good: All SOA have the same Serial Number
|
| 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.
|
| 4. Content- and Performance-critical Checks |
| http://dex.uneb.br/.well-known/acme-challenge/check-your-website-dot-server-daten-dot-de 200.128.3.79
|
| Fatal: Check of /.well-known/acme-challenge/random-filename has a http status 500 - 599, Server Error. Creating a Letsencrypt certificate via http-01 challenge can't work. Trouble creating a certificate? Use https://community.letsencrypt.org/ to ask.
|
| https://200.128.3.79/ 200.128.3.79
|
| Warning: Https + http status 200 + Inline CSS / JavaScript found. Don't use inline CSS / JavaScript. These are compiled and re-used ressources, save these with a long Cache-Control max-age - header.
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| A | Good: Every https result with status 200 has a minified Html-Content with a quota lower then 110 %.
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| A | Good: Every https connection via port 443 supports the http/2 protocol via ALPN.
|
| https://200.128.3.79/ 200.128.3.79
|
| Critical: Some script Elements (type text/javascript) with a src-Attribute don't have a defer / async - Attribute. Loading and executing these JavaScripts blocks parsing and rendering the Html-Output. That's bad if your site is large or the connection is slow / mobile usage. Use "async" if the js file has only functions (so nothing is executed after parsing the file) or is independend. Use "defer" if the order of the scripts is important. All "defer" scripts are executed before the DOMContentLoaded event is fired. Check https://developer.mozilla.org/en-US/docs/Web/HTML/Element/script to see some details.: 4 script elements without defer/async.
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| A | Good: Some checked attribute values are enclosed in quotation marks (" or ').: 125 Html-Elements checked, 124 without problems.
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| I | Wrong: Attribute values found, not enclosed in quotation marks (" or ').: 1 Html-Elements with attributes and missing enclosed quotation marks found. 1 wrong attributes.
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| A | Good: Some img-elements have a valid alt-attribute.: 11 img-elements found, 6 img-elements with correct alt-attributes (defined, not an empty value).
|
| Wrong: img-elements without alt-attribute or empty alt-attribute found. The alt-attribute ("alternative") is required and should describe the img. So Screenreader and search engines are able to use these informations.: 0 img-elements without alt-attribute, 5 img-elements with empty alt-attribute found.
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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 | Duration: 438913 milliseconds, 438.913 seconds
|