History and Development of CAPTCHA
We started with text CAPTCHA and came to a simple checkbox, improving the system after each failure.
Network
Explore the latest trends, reviews, and news in network technologies. Stay updated on advancements in networking, including hardware, software, and security.
Index of Digital Evolution as a way to measure the level of digitalization of the economy in different countries
One such method was the calculation of the Digital Evolution Index, created by the Fletcher School in collaboration with Mastercard. Based on the data obtained, the countries…
About qemu and 802.1p protocol
Launching the first VM. It is not pinging over the network. Locally from the hypervisor — everything is ok. I go to the console, run something like tcpdump -nvvvi any…
How to set up DLNA on different devices: step-by-step plan
Hello, tekkix, my name is Alexey Onosov, I am an author at vAITI media. In this article, I will talk about setting up DLNA on servers, TV and mobile players, and hardware…
HTTP requests: parameters, methods, and status codes
When a user enters a website URL in the browser's search bar, their computer or other device initiates a connection with the server and sends it an HTTP request — a message…
Non-obvious questions of NGFW development: how we form a team and train partners
Solar NGFW entered the market in 2023, and in the first half of 2024, the Solar Group presented a solution in hardware and software implementation. Developing a product…
Physical connection topology
In the process of its evolution from batch processing systems based on mainframes, computer networks have become increasingly complex, leading to a large number of options…
Understanding CDN Cache Statuses
Hello, tekkix! Today we will delve into one of the key aspects of CDN operation – cache statuses. If you have ever looked into server response headers or analyzed CDN…
Migration from Juniper SRX firewall to PaloAlto using python
PaloAlto has a special migration tool called Expedition. It can convert configuration files from various firewalls to PaloAlto. But its source code is closed, you will…
Setting up an Anycast address within a budget test stand
Within IPv4 and IPv6, there is a concept of Anycast addresses. To simplify, these are IP addresses that look like regular "gray" or "white" addresses, but they can work…
How Digital Equipment Corp. engineers saved Ethernet
Ethernet protocol, developed by computer science researchers Robert Metcalfe and David Boggs, undoubtedly had a huge impact on the development of networks.
Data Center: Topologies and Architectures
Data Centers are generally large buildings with rooms that house endless racks of servers, communication equipment, storage systems, and other infrastructure elements.…
A brief history of Cisco PIX Firewall
Today we will say a few words about another workhorse of network building. A device notable not only for its functionality but also for its mass production. Inexpensive,…
Access to multiple Kubernetes pods via TCP protocol and a single external IP
In the Amvera cloud, microservices and user databases run in a Kubernetes cluster. To access applications, it is usually sufficient to use the nginx ingress controller,…
Configuring DHCPv6 and SLAAC in IPv6 networks
With the development of the internet and the exhaustion of the IPv4 address space, the transition to IPv6 becomes necessary. IPv6 expands the number of available addresses…
Bypassing VPN Blocking
My provider, in addition to slowing down YouTube, has also started blocking connections to my work VPNs. My employer doesn't really like it when I answer for a week at…
Using the Forti client through the Windows Subsystem for Linux
TL;DR The article discusses accessing corporate resources through a Forti connection from the Windows Subsystem for Linux.
The Holy War of Programming Languages or the Experience of an Unsuccessful Move from Python to Golang
What prompted me to switch to Golang? At that time, I was using Python version 2.7.9 — this was around 2017. Then Python 3 was released. It turned out that despite many…
