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A Python application with an interface for automatically connecting to one of the NordVPN servers of the desired type, in a specific country or to a chosen server. The server can be selected manually based on statistics for each of the available ones. Recent changes: added the ability to force quit; conducted a check for DNS leaks; added support for connections through Network Manager and openvpn; added […]
Google has decided to discontinue the separate indication of EV (Extended Validation) certificates in Chrome. Previously, for websites with such certificates, the name of the company verified by the certification authority was displayed in the address bar, but now these sites will show the same secure connection indicator as those with domain validation certificates. Starting with Chrome […]
Hello everyone, Habr users! The inspiration for writing this article came from the frequent triggers of the Zabbix monitoring system regarding speed drops in the 'Tele2' network. For remote locations where it is impossible to lay fiber optics, we organized port forwarding for the recorder through USB modems, re-flashed for any operators. Here's a simple communication scheme for the equipment: By the way, our organization also uses in the same […]
Some examples of corporate WiFi organization have already been described. Here I will outline how I implemented a similar solution and the issues I encountered when connecting on different devices. We will use the existing LDAP with registered users, set up FreeRadius, and configure WPA2-Enterprise on the Ubnt controller. It seems straightforward. Let's see… A little about EAP methods Before proceeding with the implementation […]
Today we will continue our discussion of VLAN and talk about the VTP protocol, as well as the concepts of VTP Pruning and Native VLAN. In one of the previous videos, we discussed VTP, and the first thing that should come to mind when you hear about VTP is that it is not a trunking protocol, even though it is called a 'trunking protocol' […]
In the release of Google Chrome 76, the company fixed a problem that allowed websites to track whether a visitor was using incognito mode. Unfortunately, the fix did not resolve the issue. Two other methods were discovered that can still be used to track the mode. Previously, this was accomplished using the capabilities of the Chrome file system API. In simple terms, if a site could access the API, […]
Today, after 4 years and 5 months of work, we are pleased to announce the release of Xfce 4.14, a new stable version that replaces Xfce 4.12. In this release, the main goal was to migrate all core components from Gtk2 to Gtk3, and from 'D-Bus GLib' to GDBus. Most components also gained support for GObject Introspection. Along the way, we completed work on […]
At the recently held Black Hat USA conference in Las Vegas, the Pwnie Awards 2019 ceremony took place, which highlighted the most significant vulnerabilities and absurd failures in the field of computer security. The Pwnie Awards are considered the equivalent of the Oscars and Razzies in computer security and have been held annually since 2007. Major winners and nominations: Best Server […]
Canonical has announced the availability of installing the Ubuntu 19.10 distribution using the ZFS file system on the root partition. This implementation is based on the ZFS on Linux project, which is provided as a module for the Linux kernel and has been included in the standard kernel package since Ubuntu 16.04. In Ubuntu 19.10, support for ZFS will be updated to version […]
Some time ago, I created a system for assessing the viability of office UPS. The evaluation is based on long-term monitoring. As a result of using it, I refined the system and learned a lot of interesting things, which I will share—welcome under the cut. Part One Overall, the idea turned out to be correct. From a one-time query to the UPS, you can only learn that life is pain. Part […]
Today's lesson will be dedicated to VLAN settings, meaning we'll try to implement everything we've discussed in previous lessons. We will address three questions: creating VLANs, assigning VLAN ports, and viewing the VLAN database. Let's open the Cisco Packet Tracer program window with the logical topology of our network that I have drawn. The first switch SW0 is connected to two computers PC0 and […]
Alan Kay is the Yoda for IT professionals. He was instrumental in the creation of the first personal computer (Xerox Alto), the SmallTalk language, and the concept of "object-oriented programming." He has often expressed his views on education in Computer Science and recommended books for those who want to deepen their knowledge: Alan Kay: how I would teach Computer Science 101 […]