2 Ways to change user password with Ansible

In this blog post, we will discuss two ways to change user passwords with Ansible. The first method is a simple command that can be used to change passwords for a single user. The second method is a more complex playbook that can be used to change the passwords for multiple users at once. We […]

Understanding SSH Key with Examples

What is SSH key? How do I use the SSH key in Linux? These are some of the most common questions that people have when it comes to ssh keys. In this blog post, we will answer these questions and provide examples of how ssh keys work. We will also discuss the benefits of using […]

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4 Effective Ways to Keep warm in winter

Here is your guide to keeping warm this winter. We have a selection of tips to help you stop shivering in the cold winter months. From keeping the draughts out and keeping the heat in, to keeping an eye on friends and neighbors. Keeping warm over the winter months – Useful information from Help The […]

What is SSL Wildcard Certificate?

A wildcard certificate is a specific form of the certificate used in TLS/SSL instances. It is a single certificate with a wildcard character (*) in the domain name field. This allows the certificate to secure multiple subdomain names (hosts) pertaining to the same base domain. For example, a wildcard certificate for *.(domainname).com, could be used […]

2 Ways to Get Public Key from Private Key

SSH public key authentication relies on asymmetric cryptographic algorithms that generate a pair of separate keys (a key pair), one “private” and the other “public”. We keep the private key a secret and store it on the computer you use to connect to the remote system. Each private key has a corresponding public key. Generally, […]

Create RSA DSA Public Private Key with Openssl

In this post, we will cover how to create RSA private key, RSA public key, DSA private key, DSA public key with OpenSSL. Create RSA Private Key with PEM format RSA private key generation with OpenSSL involves just one step: openssl genrsa -out rsaprivkey.pem 2048 This command generates a PEM-encoded private key and stores it […]

Risk of Wildcard Certificate in SSL with Examples

A wildcard certificate is a specific form of the certificate used in TLS/SSL instances. It is a single certificate with a wildcard character (*) in the domain name field. This allows the certificate to secure multiple subdomain names (hosts) pertaining to the same base domain. For example, a wildcard certificate for *.(domainname).com, could be used […]

How to fix ssh_dispatch_run_fatal?

On a Linux 8 system with FIPS enabled, connecting to a Linux 6 system fails, ssh -v displays the following message ssh_dispatch_run_fatal: Connection to XXX port 22: invalid argument Solution The simplest solution is to delete file /etc/ssh/moduli on the Linux 6 system serving as sshd backend. The same workaround is applicable for other Linux […]

Understanding PFX File with Examples

PFX files are digital certificates that contain both the SSL certificate (public keys) and private key. They’re essential for establishing secure connections between two devices. PFX files are usually issued by a certificate authority and contain information about the issuing CA, the certificate holder, and the certificate’s public and private keys. If you’re looking for […]