Preparing for the CCNP 350-401 ENCOR Exam

January 31, 2020 update: No, you're not crazy. Cisco changed the exam number from 300-401 to 350-401. The blueprint for the ENCOR exam is mostly the same as the CCNP Routing & Switching track. In fact, the fundamentals are almost 100% identical. That means that you can prepare for the CCNP ENCOR exam by using existing R&S training materials. For your convenience, I’ve put together the following list of my Pluralsight courses that cover both the new CCNP ENCOR exam and the retired CCNP ROUTE, SWITCH, and TSHOOT exams.

Finding Suspicious Traffic using CloudWatch Log Insights and VPC Flow Logs

While playing around with AWS CloudWatch Log Insights to analyze VPC flow logs, I thought of a couple of fun ways to identify (probably) malicious traffic. Finding Vulnerability Scanners These are the guys that hammer your box looking for anything from silly SQL injection attacks (so 2005) to CSRF vulnerabilities. The tell: look for hosts that reuse the same source port. The Query filter (srcPort > 1024 and srcAddr !

Understanding the AWS Shared Responsibility Model

As an AWS customer, you share responsibility with AWS for the security of your data the cloud. There’s a mantra: AWS handles the security of the cloud, but you handle security in the cloud. But it turns out that’s not quite true. For more, check out my guide _Operating within the AWS Shared Responsibility Model_.

Science is About Discovering the Truth

As someone who works in IT, I hear and read a lot of comments about science. One common but unfortunate claim is that “science is not about finding truth.” While I won’t get into the underlying philosophical reasons behind this claim, I do want to at least respond to it on its face. Etymology of the word “science” The word science comes from the Latin scientia, meaning knowledge. Plato said that knowledge is “justified true belief.

Studying for the AWS Certified Solutions Architect: Associate Exam (SAA-C01)

Study Guides The AWS Certified Solutions Architect Study Guide: Associate SAA-C01 Exam 2nd Edition ($30) by David Clinton and myself covers more than you need to know to pass the exam. If you don’t believe me, just click the link and look at the reviews on Amazon. If you are fairly new to AWS, you’re better off starting with the AWS Certified Cloud Practitioner Study Guide: CLF-C01 Exam, also by David Clinton and yours truly.

Operational Excellence Means Automation

People use the term “operational excellence” in a lot of different ways. In its vaguest sense, it means continuous improvement as applied to operations. But you’re interested in what it means in the context of technology operations. And I’m here to tell you that it means automation. Operational Excellence is one of the five pillars of the AWS Well-architected Framework. The AWS whitepaper lists six design principles for achieving operational excellence.