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…
This article is part of the following series. 4 ways to list files within a rpm package in Linux 3 ways to Check RPM package dependency in Linux How to use yum to list All versions of Package in Linux…
This article is part of the following series. In Linux, the home directory (also called “home” or “home folder”) is a directory designated for a particular user, where their personal files and configuration settings are stored. Each user on…
Ping is used to check if the machine is up and is connected to the network and working well on that particular network. The basic methodology here is that a network packet is sent to the machine if the machine…
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…
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:…
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…
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…
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…
For SSL key values mismatch issue, it means the private key file does not match the certificate. There are two main reasons. Error message:Cannot load SSL private key file. Error: error: 0B080074:x509 certificate routines:X509_check_private_key:key values mismatch. What is SSL certificate…
