Both SSL and TLS protocols aim to protect sensitive information used during transactions such as payment processing that requires authentication to prove the identity of our server to the users. TLS 1.3 is the latest version of the TLS protocol. …
The port number for SSH is 22 by default. Whenever we run a command through default SSH port number 22, a connection is established between client and server. Every connection initializes through this port. This tutorial explains why and how…
SSH (Secure Shell) is a widely used network protocol to securely log onto remote systems. One of its features is /SSH Port Forwarding/ (or SSH tunneling). This functionality forwards encrypted connections between a local and a remote computer. There are…
A self-signed certificate is a security certificate that is not signed by a certificate authority (CA). These certificates are easy to make and do not cost money. The Self-signed SSL certificate is mainly used for non-production applications or other experiments.…
1. What is CSR? A Certificate Signing Request (CSR) is a block of encoded text generated on a server that contains a request for a digital certificate (SSL/TLS) from a Certificate Authority (CA). The CSR carries your public key and…
X.509 is a standard format for public key certificates, digital documents that securely associate cryptographic key pairs with identities such as websites, individuals, or organizations. It can be used for authenticated and encrypted web browsing, signed and encrypted email etc.…
OpenSSL is an open-source command-line tool that is commonly used to generate private keys, create CSRs, install our SSL/TLS certificate, and identify certificate information. This quick reference can help us understand the most common OpenSSL commands and how to use…
The Linux find command is a powerful tool that enables system administrators to locate and manage files and directories based on a wide range of search criteria. It can find directories and files by their name, their type, or extension,…
The best way to find files by name in Linux is using the find command with the “-name” option. This command will search through the directories for files that have the specific word in their name. This can be very…
Grep is a Linux / Unix command-line tool used to search for a string of characters in a specified file. When it finds a match, it prints the line with the result. The grep command is handy when searching through…
