Forståelse af SSL/TLS-certifikater
SSL (Secure Sockets Layer) og dets efterfølger TLS (Transport Layer Security) er sikkerhedsprotokoller, der bruges til at etablere en krypteret forbindelse mellem en webserver og en browser.
Ofte stillede spørgsmål om SSL
Hvad sker der, hvis mit certifikat udløber?
Brugere vil se sikkerhedsadvarsler i deres browser, og adgang til dit websted kan blive blokeret. Dette fører til tab af tillid og fald i SEO-placeringer.
Hvilken type SSL-certifikat har jeg brug for?
For de fleste websteder er et standard DV (Domain Validated) certifikat tilstrækkeligt. OV- eller EV-certifikater giver højere tillid til virksomhedswebsteder.
An SSL Certificate Checker is an online tool that verifies the validity, expiration date, issuer, and configuration of SSL/TLS certificates installed on web servers. It helps identify security vulnerabilities and certificate misconfigurations.
Key Facts
- Over 95% of web traffic is now encrypted with HTTPS
- Google uses HTTPS as a ranking signal since 2014
- Let's Encrypt has issued over 3 billion free certificates
- TLS 1.3 reduces handshake time by 33% compared to TLS 1.2
Frequently Asked Questions
What is an SSL certificate?
An SSL certificate is a digital certificate that authenticates a website identity and enables encrypted connection between a web server and browser.
How do I know if my SSL certificate is valid?
Use this SSL Checker tool. A valid certificate shows green status, future expiration date, trusted CA issuer, and TLS 1.2+ protocol.
What happens when an SSL certificate expires?
Browsers display security warnings, your site may become inaccessible, SEO rankings drop, and customer trust is lost.
What is the difference between SSL and TLS?
TLS is the successor to SSL. Modern websites use TLS 1.2 or 1.3. TLS offers stronger security and better performance.
Do I need an SSL certificate?
Yes. Chrome marks HTTP sites as Not Secure. SSL is essential for SEO, trust, data protection, and GDPR compliance. Free certificates available from Let's Encrypt.