Post Views: 1,382 Sometimes troubleshooting in Wireshark is easy-ish, you find a misbehaving protocol behavior or pattern or even a bad packet, sometimes it is tricky and takes a while to find something, and sometimes it is as clear as mud. Check out these great references as well: Our custom profiles repository for Wireshark Our […]
Real-life Wireless Wireshark Troubleshooting Example Read More »
Post Views: 1,425 The following is a must have reference for Linux systems networking operations. We will be using the two basic commands: ‘ifconfig’, ‘iwconfig’, and ‘ip’. If you are the rtoot or administrator you should have no issues using the commands as shown. If you do not, you may want to use ‘sudo’ in
Linux Networking Commands Read More »
Post Views: 1,958 I was recently (this was 2017) asked the question “If I want to get into Networking, what should I learn?” If you want to see the 2025 answer – click here. A great question because Telecommunications or Data Networking is really not a degree program at most universities, at least not at
If I want to get into Networking, what should I learn? Read More »
Post Views: 2,497 How can you verify your Wi-Fi is on the right channel, who else is interfering? We wish that was easy. And at a normal user level it is. First you need a Wi-Fi scanner. The following is a growing list of Wi-Fi Scanning Utilities for various platforms. Most all are free,
Wi-Fi Scanning Tools List Read More »
Post Views: 2,264 In a recent set of email exchanges with a client, we were tackling the challenges of hiring engineers and technical staff. I can summarize the most interesting issues as follows: Deliberately, we have not listed the normal hiring checklist items. The answer to the first question can be summarized in a single
Technology Hiring – Always a Tough Challenge Read More »
Post Views: 23,106 You have to think of and understand the Internet’s Domain Name Service -DNS- as a System. The DNS is the system which, in its primary function, converts Internet domain names that you type into URL bars, or hyperlinks that you click on a web page into numeric IPv4 and/or IPv6 addresses. In
The DNS System In Depth Read More »
Post Views: 7,688 Hi everyone! Being able to decrypt the encrypted contents of packet captures is very important if you want to troubleshoot anything above Layer 4. This is even more important today as the network is evolving to QUIC where everything is encrypted. Check out these great references as well: Our custom profiles repository
TLS Decryption in Wireshark Using Key Log Files in Windows, MAC, and Linux Read More »
Post Views: 2,044 Check out these great references as well: Our custom profiles repository for Wireshark Our Udemy course on Wireshark Our Udemy course on Wireless Packet capture I am often asked how SSL and TLS can be decrypted in Wireshark captures. I have written a separate article on HTTPS Decryption in Wireshark here. NOTE:
Leveraging SSL and TLS Decryption in Wireshark Read More »
Post Views: 33,298 Check out these great references as well: Our custom profiles repository for Wireshark Our Udemy course on Wireshark Our Udemy course on Wireless Packet capture If you are a Wireshark power user, you know the importance of complex display filters to narrow searches for very particular items. The challenge can be to
Zero to Hero with Wireshark Display Filter Macros Read More »
Post Views: 1,638 Check out these great references as well: Our custom profiles repository for Wireshark Our Udemy course on Wireshark Our Udemy course on Wireless Packet capture For those of you who love Wireshark and are asking the question: How do I find what HTTPS site were visited within a capture? I have a
Finding HTTPS Sessions in Wireshark Captures Read More »
Post Views: 2,604 Check out these great references as well: Our custom profiles repository for Wireshark Our Udemy course on Wireshark Our Udemy course on Wireless Packet capture Great question, and one I get all the time. As most of you know, the manufacturer of a networking device that uses MAC addressing can be
How do I find all packets from Apple devices in Wireshark? Read More »
Post Views: 1,452 Check out these great references as well: Our custom profiles repository for Wireshark Our Udemy course on Wireshark Our Udemy course on Wireless Packet capture It’s Sunday, it’s Father’s Day, and it is the day before Sharkfest 2017! One of the best presents has been that TRANSUM has been included as a
The TRANSUM tool is now in Wireshark 2.4! Read More »
Post Views: 1,380 Check out these great references as well: Our custom profiles repository for Wireshark Our Udemy course on Wireshark Our Udemy course on Wireless Packet capture One of the clever Wireshark 2.x features has to do with Wireless packet trace analysis. From the Wireless menu drop down, there is a WLAN Traffic item.
Wireless Report in Wireshark 2.x Read More »
Post Views: 1,320 Most Service Providers have been very busy over the past several years laying fiber to the home/premise/curb. This activity has resulted in large jumps in the Internet speeds that many served customers are enjoying. Of course, the less rural you are the better, but still, even the rural providers are stretching their
Are Traditional Service Providers Watching Over Their Shoulders? Read More »
Post Views: 6,835 Check out these great references as well: Our Wireless custom profile for Wireshark Our Udemy course on Wireless Packet capture Our other Wi-Fi related articles At a recent course I taught in New England, one of the students wanted to capture Wi-Fi packets on their Windows Surface Pro. Of course, I referred
Capturing Wi-Fi WLAN Packets in Wireshark on Linux Read More »
