Clark-Wilson performs steps in order, performs exactly what is listed, and authenticates individuals who perform the steps.


The Bell-LaPadula model focuses on data confidentiality and controlled access to classified information. The Simple Security Property states that a subject at a given security level may not read an object at a higher security level (no read-up). A subject at a given security level must not write to any… Read more »

Converting SSL Certificates

Here is a quick reference to convert SSL certificate in different formats Converting PEM encoded certificate to DER #openssl x509 -outform der -in certificate.pem -out certificate.der Converting DER encoded certificate to PEM #openssl x509 -inform der -in certificate.cer -out certificate.pem Converting PEM encoded certificates to PKCS7 (P7B) #openssl crl2pkcs7 -nocrl… Read more »

Nginx – Adding backend servers and redirection

Following configuration file will reside in “/etc/nginx/config.d/”folder as described in this post Click here! This configuration will give an idea on how to listen on port 443 for SSL connections and redirect the requests to backend servers. I have also added an example to manipulate HTML contents coming form backend… Read more »