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PCNSA stands for Palo Alto Networks Certified Network Security Administrator, and according to the official website, it validates the knowledge and skills required for network security administrators responsible for deploying and operating Palo Alto Networks NGFWs. Resources I used materials provided by Palo Alto for free (amazing!), namely: On-demand Firewall 9.1 Essentials: Configuration and Management course available on a beacon platform Official study guide Documentation Practice exam Exam In my opinion exam questions were pretty well aligned with the objectives and most of the questions were covered in the materials that I have used....

In this short article, I would like to point out some similarities and differences in using passive-interface command between two link-states protocols Open Shortest Path First (OSPF) and Intermediate System to Intermediate System (IS-IS). Topology Every router has a Loopback0 configured with IP address X.X.X.X/32, where X is the router number, i.e R2 (2.2.2.2/32) Transit links are configured with IP addresses 10.X.Y.0/24, where X and Y are adjacent router numbers, i....

Acme Corporation decided to use EvilCorp to provide connectivity between their branches (Site A and Site B). They agreed to use the BGP protocol and establish a neighbor relationship between R1 (Site A) and R3 (EvilCorp) as well as R4 (Site B) and R3 (EvilCorp). There are numerous problems in the network. Would you be able to solve them to provide connectivity between client sites? Topology Every router has a Loopback0 configured with IP address X....