SSSM-15. About QoS.
 
Now with the option Pull Request'ov .
 
 
And now we have reached the topic of QoS.
 
Do you know why just now and why this will be the closing article of the entire course of the SDSM? Because QoS is extraordinarily complex. The most difficult thing that was before in the cycle.
 
This is not some magical archiver, which deftly squeezes traffic on the fly and shuffles your gigabit into a hundred-gigabit uplink. QoS is about how to sacrifice something unnecessary, cramming the unintended into the framework of what is allowed.
 
QoS is so entangled in the aura of shamanism ...

SSH by default it works on port 22. This is not a match. Here's the story of how he got this port.
 
 
When I ( Tatu Ilonen ) First published this story in April 201? it became viral: it was read by about ??? readers in three days.
 
 

The history of receiving port 22 for SSH

 
I wrote the first version of SSH (Secure Shell) in the spring of 1995. At that time, widely used Telnet and FTP .
 
 
But I still developed SSH for the replacement and telnet (port 23) and ftp (port 21). Port 22 was free and conveniently located between ...[/h]

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The Ramfjorden installation of the European Scientific Association for Incoherent Scattering (EISCAT), located near Tromso in Norway. The installation includes several radio telescopes used to study the interaction of the Sun with the ionosphere and the magnetosphere of the Earth. To the left is a round parabolic swivel antenna with a diameter of 32 m, which was used to transmit a message to the side of Leiten star
 
 

Symposium "Language in the Cosmos"

 
In October 201? the researchers deployed a powerful radar telescope three times near the city of Tromsø in Norway, in the direction of ...[/h]

The trend of recent years in Russia - the adoption of laws that affect the regulation of the telecom market. At the same time, telecom is a science-intensive and technological branch that acts as an engine for the development of the country's infrastructure. 2018 brought us several reasons to consider the merger of telecom operators closer.
 
 

Trends in legislation

 
Legislative regulation of the telecom is increasingly on the agenda of official and unofficial media. The reason for this is the "Yarovoi law", changes in the cost of ownership of frequencies, requirements for collecting and ...[/h]

 
 
Recently, the issue of the future of Wi-Fi networks in connection with the expected mass construction of fifth-generation cellular networks is increasingly being discussed. Indeed, why do we need Wi-Fi in a world where cellular networks provide billions of people with high-speed Internet access? Will the family of Wi-Fi standards stop with the arrival of 5G? Will technology leave the market, having completed its "historic mission"? Everyone who answered these questions in the affirmative is devoted to this article. We hope that all the others who understand network technology will also find it interesting ...

June 2? 2018 Wi-Fi Alliance officially introduced certification program Wi-Fi CERTIFIED WPA3 . This is the first update over the past 14 years of Wi-Fi security protocols.
 
 
According to the alliance, WPA3 (Wi-Fi Protected Access 3) "adds new features to simplify Wi-Fi security, provide more reliable authentication, improve cryptographic stability for highly sensitive data markets and ensure the fault-tolerance of critical networks." In all WPA3 networks:
 
 
 
The latest security methods
are used.  
The obsolete protocols
are prohibited.  
Mandatory is the function of protecting management frames ...

antennas.The FIFA World Cup has already begun, and in this regard, in several arenas of the championship, we deployed our new infrastructure. One of the arenas - "St. Petersburg", home stadium FC "Zenith". In this post we will talk about how the connection is made on one of the main venues of the tournament, where we hide the antennas, and why our engineers go four thousand steps before each match (if not more often).     material on how to monitor the mobile network in Moscow ...

What changes when the applied frequency band is changed in radio communication is not always correctly formulated even by experienced radio amateurs. On the one hand, the formula for transferring Friis is extremely simple, and there seems to be nothing to discuss. On the other hand, in this formula, in addition to explicitly mentioning the wavelength λ, it is implicitly hidden in other coefficients. There are many statements, notes and articles, that with higher frequencies the power of radio links is worse, there are no less articles of "myth exposures" - saying that there is nothing worse than ...

 
 
While all subscribers are rigidly tied to their cellular operator ID in the form of a phone number in the world of technologies, changes are taking place, which in a few years will turn the service providers' models upside down. Let's look behind the scenes of consumption and understand the prerequisites for these changes and emerging trends in the telecom.
 
itself. Association GSM actively participates in the transformation of mobile technologies and consumption patterns of operators' services. In 201? the standard was adopted Remote SIM provisioning, which, in fact, lit a green light for the ...

 
 
* In the photo Katarina Barley, Minister of Justice of the Federal Republic of Germany
 
 
At the time of interview German online publication zeit.de, the Minister of Justice of the Federal Republic of Germany, Katarina Barley (Katarina Barley) proposed to introduce a unified messaging standard between different messengers:
 
"It should be ensured that WhatsApp users can also communicate with users of another messenger. This will allow people to switch to other messengers that have the best privacy standards and continue to talk with the old contacts "
...