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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

A PFX file is a certificate in PKCS#12 format. It contains the SSL certificate (public keys) and the corresponding private keys. Most of the Certificate Authorities will not issue certificates with the private key. They just issue and share the certificates in .cer, .crt, and .p7b formats which don’t have the private key in most […]

2 Ways to Fix SSL key values mismatch

For SSL key values mismatch issue, 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. key values mismatch in private key, CSR, and certificate file. certificate chain order is not correct Verifying Our Keys Match To verify the public and private keys match, extract […]

Check 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 […]