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Michael Scarborough and Ryan Ballmer, co-authors of Global Knowledge ITIL courseware, discuss how to become an ITIL expert.

Michael Scarborough and Ryan Ballmer, co-authors of Global Knowledge ITIL courseware, discuss why ITIL is important to businesses.

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.

Discover why Amazon Redshift is one of the most talked about and fastest growing services that Amazon Web Services (AWS) has ever released.

A local area network (LAN) provides a path of communication, originating from the sender to the receiver; Ethernet is the most common LAN used.

Learn how to use PowerShell cmdlets specific to installing and configuring Hyper-V.

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.

Gain a basic overview of the basic techniques and best practices for evaluating programs, prioritizing objectives or discovering problem areas when creating products and providing services.

Read more about the best IT skills to learn in 2014. Global Knowledge’s resource library features comprehensive articles and handy how-to lists.