Category Administration
It's no secret that the Internet is a very hostile environment. As soon as you raise a server, it is instantly subjected to massive attacks and multiple scans. Using the example of honeypot from security companies, you can assess the scale of this garbage traffic. In fact, on the average server, 99% of traffic may be malicious. Tarpit is a trap port used to slow down incoming connections. If a third-party system is connected [...]
Optical CDs appeared in general access in 1982, the prototype was released even earlier - in 1979. Initially, compacts were developed as a replacement for vinyl discs, as a better and more reliable medium. It is believed that laser discs are the result of the joint work of the teams of two technology corporations - the Japanese Sony and the Dutch Philips. At the same time, the basic technology of "cold lasers", […]
By the spring of 1987, the optical revolution had become a reality. Laser technology made it possible to beat the nearest competitor tenfold - Winchester (so they wrote, with a capital letter). Mind blowers Optimem and Verbatim were preparing prototypes of rewritable optical storage devices, and experts and analysts were making long-term plans. One of the world's pillars of science pop, still alive today, Popular Science in the article "Erasable optical […]
On March 14, the first Russian Zabbix office opened in Moscow. The opening celebration was held in the format of a mini-conference, bringing together more than 300 customers and interested users. The event started with an exam. The pre-scheduled session gave me the opportunity to prove my knowledge and get certified as a certified specialist or a certified Zabbix professional without going through the appropriate training course. Congratulations to those who made it! Impressed by the average score […]
The purpose of this project was: Learning the DHCP protocol when working on an IPv4 network Learning Python (a little more than from scratch 😉 ) replacing the DB2DHCP server (my fork), the original is here, which is getting harder and harder to assemble for a new OS. Yes, and I don’t like that the binary, which is not possible to “change right now” getting a working DHCP server with […]
In the view of inexperienced people, the work of a security administrator looks like an exciting duel between an anti-hacker and evil hackers who intrude into the corporate network every now and then. And our hero in real time, with a deft and quick introduction of commands, beats off daring attacks and, as a result, emerges as a brilliant winner. Directly royal musketeer with a keyboard instead of a sword and a musket. And on […]
Bash Scripts Getting Started Bash Scripts Part 2: Loops Bash Scripts Part 3: Command Line Options and Switches Bash Scripts Part 4: Input and Output Bash Scripts Part 5: Signals, Background Tasks, Managing Bash Scripts -scripts, part 6: functions and library development Bash scripts, part 7: sed and word processing Bash scripts, part 8: data processing language awk Bash scripts, part 9: regular expressions Bash scripts, […]
The material, the translation of which we publish today, is intended for those who want to master the Linux command line. The ability to use this tool effectively can save a lot of time. In particular, we will talk about the Bash shell and 21 useful commands here. We'll also talk about how to use command flags and Bash aliases to speed up typing long […]
Dmitry Pichulin, known by the nickname “deemru”, became the winner of the Fhloston Paradise game developed by Tradisys on the Waves blockchain. To win the game, the player had to place the most recent bet during the 60 block period before another player bet, thereby resetting the counter. The winner got all the money wagered by other players. Dmitry won the victory […]
How prettier the Internet has become with ... or what useful (and not so) public services can be obtained online. Am I an addict? Grandma's court at the entrance thinks yes (in fact, no - I always greeted them, and now there is a certificate!). Was I a convict? There is no information, says another reference. Did I go through a dispensary? Definitely yes, […]
There is still surprisingly little material on the RuNet about such an old and simple, but convenient, safe and especially relevant technology in connection with the development of the Internet of Things, as a mobile VPN (virtual private network). In this article I will describe how and why you can configure access to your private network for any device with a SIM card without the need to configure […]
Hello, attentive habrachitatel. After publishing a topic with photos of the workplaces of Khabrovites, I still waited for a reaction to the “Easter egg” in the photo of my cluttered workplace, namely, questions like: “What is this tablet with Windows and why are there such small icons on it?” The answer is similar to "the death of Koshcheeva" - after all, the tablet (regular iPad 3Gen) in our […]
