TLS 1.2 vs TLS 1.3: What Is the Difference and Which Should You Use?
Compare TLS 1.2 and TLS 1.3, including handshake speed, cipher suites, security improvements, compatibility, and which TLS versions modern websites sh...
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DomainScan Blog - Domain, DNS, WHOIS, SSL and Network Insights
DomainScan Blog - Domain, DNS, WHOIS, SSL and Network Insights
Explore the DomainScan Blog for expert guides, tutorials, and insights on domain names, DNS management, WHOIS lookups, SSL certificates, website security, networking, and domain industry best practices.
What Is SNI and Why Is It Important for HTTPS?
Learn what SNI is, how Server Name Indication lets multiple HTTPS websites share one IP address, and how SNI problems cause SSL certificate errors.
What Is a TLS Handshake and How Does HTTPS Establish a Secure Connection?
Learn how the TLS handshake works, how browsers and servers negotiate HTTPS security, validate certificates, exchange keys, and establish encrypted co...
What Is Mixed Content and How Do You Fix It on an HTTPS Website?
Learn what mixed content is, why HTTPS pages load insecure HTTP resources, how browsers handle mixed content, and how to find and fix common mixed con...
What Is HSTS and How Does HTTP Strict Transport Security Work?
Learn what HSTS is, how HTTP Strict Transport Security forces HTTPS, how the Strict-Transport-Security header works, and how to avoid common HSTS mist...
How to Fix ERR_SSL_PROTOCOL_ERROR: Common Causes and Solutions
Learn what ERR_SSL_PROTOCOL_ERROR means, what causes it, and how to troubleshoot SSL, TLS, DNS, port 443, proxy, and server configuration problems.
Why Does a Website Show “Not Secure”? Common Causes and Fixes
Learn why browsers show “Not Secure,” how HTTP, SSL certificate errors, mixed content, and HTTPS configuration problems cause warnings, and how to fix...
SSL Certificate Name Mismatch: Causes and How to Fix It
Learn what an SSL certificate name mismatch means, why it happens, and how to fix HTTPS hostname errors caused by DNS, certificates, proxies, and serv...
What Is an SSL Certificate Chain and How Does It Work?
Learn how an SSL certificate chain works, the difference between root, intermediate, and server certificates, and how to fix incomplete certificate ch...