Certifications
I just passed the Fortinet NSE7 SD-WAN certification! I prepared by using the self-paced training courses on the Fortinet Training Institute (FTI). As with all material currently on the FTI, the courses are prewritten scripts read by voiceover talent. This is as dry as training can get, especially when compared
Uncategorized
Applying a DoS policy on a WAN interface is a good practice that will help prevent flooding or abusive behavior from the internet. However, there is an undesired side-effect of choosing a WAN interface as the source for a DoS policy: If there are any VPN tunnels bound to the
3CX
UPDATE: 3CX version 18 has discontinued Exchange voicemail support. The steps outlined in this article will enable 3CX v18 to work with Exchange UM voicemail! The Problem A client needs to be able to use two different voicemail systems simultaneously on the 3CX phone system. Hurdles 3CX has two mutually
Cisco
We ran into an issue where a Cisco 3850 switch (3850-12X48U) lost the ability to use the its C3850-NM-8-10G network module after a firmware upgrade. The module had been working for a few years prior to the upgrade. We upgraded from 16.03.07 to 16.12.05 and upon
Security
Kaseya VSA Hack On Friday, a popular IT tool called Kaseya VSA was hacked. The exploit was a "zero day" vulnerability, which means it was previously unknown by anyone in the cyber-security industry. Kaseya VSA is a Remote Monitoring and Management tool (RMM) that is used by many
Cisco
Packet Capture on a Remote Cisco Device Typically when I need to do a packet capture on a remote Cisco IOS/IOS-XE device, I use RSPAN to mirror that traffic someplace where a VM can receive the capture. This week I learned a trick that allows much more flexibility! ERSPAN
Certifications
This post is part three to Why We Love Continuing Education and Certifications and How I Study for IT Certification Exams There's a genre of movie that's usually predictable, sometimes corny, but always endearing. These are the movies where a group of misfit kids are put
Certifications
This post is a follow-up to Why We Love Continuing Education and Certifications and continues on with What Certs Should My IT Team Have? A few weeks ago I was reading to my daughters one of our favorite Shel Silverstein books and came across the following poem: The little blue
3CX
This post is part 1 in a three part series which includes How I Study for IT Certification Exams and What Certs Should My IT Team Have? My First IT Certification When I graduated from UNC Asheville in the spring of 2003 with a Computer Science degree, I had assumed
Fortinet
Portable Internet Service One of our healthcare clients needed a solution for running COVID-19 vaccination clinics in a parking lot or pavilion. They wanted to provide secure connectivity to electronic health records (EHRs) for a team of doctors, nurses and their support staff at any location. The challenge with these
Exchange
Vulnerable Exchange Servers In the wake of the Exchange Zero-day vulnerabilities, Advanced Data was concerned about how many vulnerable servers were left in our region. We pulled the blocks of IP addresses that are used in our region by businesses and entered them into NMap as target IPs. We then
Exchange
Last week, Microsoft released patches to resolve four severe vulnerabilities in Exchange Server that are being exploited by a Chinese state-sponsored group called HAFNIUM. At the time, Microsoft said that the bugs were "limited, targeted attacks”. Six days have passed and it's now being reported that over