2 ways to check DNS PTR Record in Linux
Introduction A PTR (Pointer) record is the backbone of reverse DNS lookups. While a normal DNS lookup (an A or…
5 Useful Tips to Check DNS MX Record in Linux
DNS MX record is short for mail exchange. It is used to direct email to a mail server. The MX…
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
The OpenSSL s_client command is a helpful test client for troubleshooting remote SSL or TLS connections. This post covers various…
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…