An Offline Root Certificate Authority is a Certificate Authority (CA) that does not have network access and is kept in the powered-down state. Why do we need an Offline Root CA and how does an Offline Root CA work? In this article, we would discuss that in detail....
We use a chain of multiple certificates to verify the public key of an end entity. A certificate chain is an ordered list of certificates that enables a client to verify the end entity’s public key. How does the verification of digital certificates work? In this...
Spamming is one of the most serious threats today. Every day numerous spam messages are sent by spammers and the objective of these spammers is to make the recipients open the messages, click on a link and buy their products or services. Many times links or...
Authentication, Authorization, and Accounting (AAA) is a framework that can be used to control network resources intelligently. Using this framework, one can control who is permitted to access network resources, what resources the user can access and what resources...
Terminal Access Controller Access-Control System Plus (TACACS+) is an Authentication, Authorization, and Accounting (AAA) protocol that is used to authenticate access to network devices. If we provide access to network devices based on IP address, then any user...
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