Check DNS A Record with Examples
DNS A record maps a domain name to the IP address (Version 4) of the server hosting the domain. The…
Best and Fastest DNS Servers in 2023
A DNS, or Domain Name Server, is what helps translate human-friendly URLs into computer-friendly IP addresses. This is what enables…
10 Useful Examples of Openssl S_client Command
When a TLS connection fails, the error you get from a browser, curl, or a Java application is usually vague. “Handshake…
what is the SSL Port number – Is SSL Port 443?
A port is a virtual numbered address that’s used as a communication endpoint by transport layer protocols like UDP (user…
5 Ways to Check SSL Certificate Expiration date
An SSL certificate helps to secure the communication between a client (such as a web browser) and a server (such…
Check SSL TLS cipher suites in Linux
An SSL cipher, or an SSL cipher suite, is a set of algorithms or a set of instructions/steps that helps…
Check SSL Connection with OpenSSL S_client Command
SSL (Secure Sockets Layer) connection is a connection that provides secure communications on the Internet for such things as web…
Check SSL certificate from Remote Server with Openssl s_client
An SSL/TLS certificate is a file installed on a website’s origin server. It’s simply a data file containing the public…
2 Ways to Install and Check Root CA Certificate on Linux
We have two methods to use update-ca-trust or trust anchor to add a CA certificate on Linux. Understanding Root CA…
How to Fix Unable to get Local Issuer Certificate
“Unable to get Local Issuer Certificate” is a common SSL certificate error. It is related to the incomplete certificate chain…