Post Views: 1,813 We have previously published two articles on Google’s QUIC protocol (note: Google originally called this protocol “QUIC” as you can tell by the original logo, but now that original version is referred to as gQUIC, whereas the IETF has chosen to call the newer version they are working on as “QUIC” – […]
How much QUIC Traffic is there? Read More »
Post Views: 2,301 Since we published the Linux Networking Commands article in October 2017, I have had several comments that I should have included the “My Trace Route” command. Ofcourse, readers were correct, but I felt that this tool deserved its own article. Some of you, depending on what version of Linux you use may
My Traceroute in Linux Read More »
Post Views: 2,002 As a follow on to our DNS In Depth article, we wanted to provide a reference to a great tool. One of the important impacts to how fast the Internet works for users is how fast the Domain Name Service responds to database requests. For example, if you type www.cellstream.com into your URL
Testing/Baselining DNS Server Performance Read More »
Post Views: 1,916 Ansible is an open-source automation tool primarily used for configuration management, application deployment, and task automation. In network automation, Ansible enables IT teams to manage and configure network devices in a consistent, repeatable, and agentless manner. Ansible is a tool used to automate Server provisioning and network provisioning. Ansible is completely free!
Using Ansible for Network Automation Read More »
Post Views: 1,979 The term “Support” can be used as a noun or a verb. To the right is the definition we found on Google. The one I am referring to is a verb and #2…particularly give assistance to, and enable to function or act. In today’s internet so much support is provided by phone,
How Customer Support Should Not Happen Read More »
Post Views: 11,216 As explained in our prior article on QUIC, you may be seeing a lot of QUIC traffic in your packet captures. Assuming you have read that article, and understand that all QUIC traffic is encrypted, you know the only way was to see some of the details is using Chrome itself. Today
Using Wireshark to Analyze QUIC Traffic Read More »
Post Views: 1,977 Have you noticed a lot of QUIC protocol in your packet captures? I certainly have, and we had better talk about what this is. What is QUIC (now more recently called gQUIC)? QUIC is a new protocol created by the fine folks at Google. It stands for Google Quick UDP Internet Connections.
Is there a lot of QUIC in your Packet Captures? Read More »
Post Views: 1,905 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 As those who have studied our Wireless Profile (available from the Profile Repository) know, there are a number of great display filters used to hunt down issues
tshark Use in Wireless Networking Read More »
Post Views: 4,409 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 Perhaps…. Of course you can edit these with appropriate addresses and numbers. The ones used are just examples. Unlike Wireshark’s Display Filter syntax, Capture filters use Berkley
Perhaps a top 15 Wireshark Capture Filter List Read More »
Post Views: 1,339 If you would like a definition of what Net Neutrality is and where it stands in the US – look here. If you are a networking geek and want to experiment with Net Neutrality using Wireshark – look here.
Want to understand Net Neutrality? Like burgers? This will explain… Read More »
Post Views: 12,302 CellStream, Inc. – Telecom Consulting and Training! 2-Day Instructor Led Hands On Lab ClassAvailable in either Web Based delivery or On-Site DeliveryMinimum 10 students – Maximum 20 students Course Description: This course specifically gives you the tools you need to build your own network in your
CSI-HO-027 – Hands On GNS3 – 2 Day Read More »
Post Views: 2,242 Check out these additional Routing Resources: Our IP Routing course at Udemy Our Custom Profiles for Wireshark Classes at the Online School This is commonly asked question from our routing courses and routing discussions in other courses. Let’s explain this command in this article. To start, you have to know that OSPF
What is the ‘area range’ command in OSPF? Read More »
Post Views: 2,127 Check out these additional Routing Resources: Our IP Routing course at Udemy Our Custom Profiles for Wireshark Classes at the Online School In a recent course on IPv6, one of my students asked what the “network” command did as we were beginning to study the routing commands used in Cisco IOS when
What is the “network” Command in OSPF and BGP? Read More »
Post Views: 3,016 If you attend our WLAN Operations course, one of the things we discuss is Active Scanning. Your system uses your saved Wi-Fi networks to actively scan for those networks (probing). There are potential security risks in this, especially with free networks. Most students conclude they should not remember networks in this way.
Deleting Remembered Wi-Fi Networks in Windows, MacOS, and Linux (Debian) Read More »
Post Views: 1,493 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 Let me begin with a little background. At CellStream, and the Online School of Network Sciences, we have taught hundreds of Wireshark classes for general networking, voice
Complaint: Why Don’t You Allow Employees to use Wireshark? Read More »
