In this video I wanted to show you an issue that I encounter quite often. DNS is one of those protocols we all take for granted and most people believe that if its working you can’t do much to tune it. There are many thing you can do to improve DNS performance. One of the more common techniques is to configure a device as a local DNS server, cache or relay of those scenarios where you might have internet connections that are slow. I want to focus on the ... read the full free article at https://www.networkdatapedia.com/single-post/2020/02/04/DNS-Client-Issues ... https://www.youtube.com/watch?v=PpX096TAiNo

NOTE: I DO NOT SELL ANY PRODUCTS. Contact the vendor for pricing, etc... There is nothing more frustrating than picking up a tool only to find that you cant use it, or its not working as expected. In this day and age, network tools have evolved to basic computers, running an operating system, memory, processor and software. Not only do you need to ensure that your tools are physically in good shape with no damage to the connectors and the screen, ensure that the software is up to date. Many times these tools will sit in a bag in a closet door or storage room for months before you go pick them up. I can’t tell you how many times I thought I found something weird on the network only to find out it was a bug with the old software in the tool. I can also tell you that many times when I appear on-site to help a client, we spend way too much time looking for their tools. I can't tell you how many times I am told that the tools have disappeared, so i have gotten in the habit of bringing my own tools even if I'm told not to bother. I would suggest that you make a reminder in your calendar every three or four months to review all your tools to ensure that all the cables, power supply, documentation, and more importantly, the software is up to date. Once a year would be a good time to check if you are up to date with your support contracts and train/refresh staff on when and how to use the tools. In this video, I show you how I keep my Profitap IOTA (https://www.profitap.com/iota/) up to date. If you find that your upgrade process is not obvious or straightforward, I would encourage you to create a small write-up on how to do it. In this case, as you can see it’s a fairly straightforward process. I would also encourage you to double-check that the update was successful and that nothing else breaks during the upgrade process. for more articles and videos, go to www.thetechfirm.com or http://www.youtube.com/user/thetechfirm ... https://www.youtube.com/watch?v=zR8Ylia83SI

dont forget to like, share and subscribe to support my channel --------------------------------------------------------------------------------------------------------- If I had a dollar for the number of times I spend troubleshooting tools before actually working on a problem, I would have enough to probably buy a social media company, lol. Here are some examples on this theme: - The client hasn’t used that tool in a while, and not familiar with its last configuration, or its operation. - The client has never used the tool at all and this is his first time. - The client is in a rush/panic to troubleshoot the problem and didn’t take the time to check the tool setup. - The tool hasn’t been updated to the current version of software/firmware. - Missing tool power adapter, cables, etc.. I’ve covered this before, so all I can add is to make sure you have a case and a check list of what the tool or analyst will need. I usually create a quickstart guide for my clients, so anyone can reset the tool to factory and get up and running as fast as possible. ... https://www.youtube.com/watch?v=VyHJQ-u5_Y8

I get many requests asking me how to configure Wireshark to use GEOIP. For those of you who are not familiar with GEOIP, it’s a pretty simple database that Wireshark can use to look up IP addresses and tell you what country, etc the IP address originate or is destined for. This is especially helpful for security people, and those who perform application baselines and want to know where the device is communicating. This could simply be an exercise in validating where your data is going, or in some cases to investigate malicious or suspicious application communication. In the video below, I show you how to get GEOIP working with Wireshark. I encourage you to give it a try and you might be surprised what you will see. As an added bonus, go to Statistics - Endpoints and click on the IP tab to see a cool summary of the same information. While you’re there click on the MAP button to see those IP addresses on a geographical map. Too cool. ... https://www.youtube.com/watch?v=6p20HQNf-Bw