Seguretat i certificats
Comprovador de certificat SSL en línia
Analitza un certificat SSL/TLS, la seva validesa, dates, emissor i dominis coberts.
Guia SSL/TLS
Què és un certificat SSL/TLS?
Un certificat SSL/TLS permet establir connexions HTTPS xifrades i ajuda a verificar la identitat del servidor.
Què comprova aquesta eina?
Comprova la connexió TLS, les dates de validesa, el hostname, l'emissor, els noms alternatius i l'empremta del certificat.
Què són els SAN?
Els Subject Alternative Names indiquen els dominis i subdominis que pot cobrir un mateix certificat.
Preguntes freqüents
Preguntes freqüents sobre certificats SSL
How do I check an SSL certificate?
Enter the domain, keep port 443 and select Check SSL.
When does my SSL certificate expire?
The result shows the expiration date and remaining days.
How do I know if a certificate covers my domain?
The tool compares the hostname with the CN and Subject Alternative Names.
What does self-signed certificate mean?
It means the certificate is signed by itself rather than a recognised trusted authority.
What is a wildcard certificate?
A wildcard such as *.example.com covers one subdomain level, not every nested level.
What are Subject Alternative Names?
They are additional names included in a certificate for other valid domains.
What happens when a certificate expires?
Browsers may show warnings and the connection is no longer considered trusted.
What is the difference between SSL and TLS?
TLS is the modern protocol that replaced SSL, although SSL remains a common term.