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Here’s an exclusive profile of North American IT pros who hold the Palo Alto Networks Certified Network Security Engineer (PCNSE) certification. The data is from our global IT Skills and Salary Report so you won't find it anywhere else.

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In this post I’ll focus on a topic that’s mentioned in the Cisco FIREWALL training class but isn’t emphasized there or in the online Cisco ASA documentation. When configuring failover on a pair of ASA security appliances, a situation can arise in which network disruption occurs due to the secondary ASA in a failover pair becoming active first and then the primary comes online second. Both the documentation and the courseware point out that this causes the secondary (and active ASA) to swap its interface MAC addresses with those of the primary. Being naturally skeptical about this behavior, I decided to investigate. The rest of this post illustrates my confirmation of this phenomenon.

If you're losing top talent and having trouble attracting quality candidates, the no. 1 reason is that they don't see a future with you. If you're not leveraging professional development, here are a couple tips to start.