IT-NEWS

Pourquoi utiliser une base de données ?

2024-07-18T15:36:00.004+01:00

Remediating an Infected System

2023-12-16T12:15:00.007+01:00

Remediating an Infected System

What is Automation ?

2023-12-16T10:18:00.004+01:00

What is Automation ?

Automation is any process that is self-driven and reduces, then eventually eliminates, the need for human intervention.

Automation was once confined to the manufacturing industry. Highly repetitive tasks such as automobile assembly were turned over to machines and the modern assembly line was born. Machines are excellent at repeating the same task without fatigue and without the errors that humans are prone to make in such jobs. This results in greater output, because machines can work 24 hours a day without breaks. Machines also provide a more uniform product. The IoT opens up a new world in which tasks previously requiring human intervention can become automated. As we have seen, the IoT allows the collection of vast amounts of data that can be quickly analyzed to provide information that can help guide an event or process. As we continue to embrace the benefits of the IoT, automation becomes increasingly important. Access to huge amounts of quickly processed sensor data started people thinking about how to apply the concepts of machine learning and automation to everyday tasks. Many routine tasks are being automated to improve their accuracy and efficiency. Automation is often tied to the field of robotics. Robots are used in dangerous conditions such as mining, firefighting, and cleaning up industrial accidents, reducing the risk to humans. They are also used in such tasks as automated assembly lines. We now see automation everywhere, from self-serve checkouts at stores and automatic building environmental controls, to autonomous cars and planes. How many automated systems do you encounter in a single day?

#iot #cisco

Accessing and Monitoring an IoT Network

2023-12-16T09:01:00.009+01:00

Accessing and Monitoring an IoT Network

The Home Gateway device acts as a local connection to your IoT smart devices. This device was designed to provide Internet access, wireless connectivity, and local logic for smart devices. The Home Gateway device provides an IoT registration service that is always turned on and an auto discovery service for Things in the local Ethernet and wireless network. After devices are connected to the home gateway, the user can control and monitor the smart devices from their smartphone, tablet, or PC.

Explore a Smart Home

2023-12-14T12:59:00.001+01:00

Explore a Smart Home

Packet Tracer has a wide variety of sensors and smart devices that will allow you to design smart homes, smart cities, smart factories, and smart power grids.

To locate the available sensors and smart devices, select End Devices from the Device Selection box at the lower left-hand side of the screen. Next, select the subcategory Home. In this subcategory, you will see many IoT devices including an air conditioner, ceiling fan, coffee maker, and CO detector. These devices can be connected to your network wirelessly or with a physical cable.

To connect the devices to your network, you need a home gateway or registration server. To find a home gateway, select Network Devices from the Device Selection box and then select Wireless Devices from the subcategories.

To control the devices, you have two options:

1. You can interact directly with a device. Hold down the Alt key and at the same time click on the device to turn it on or off.

2. You can connect remotely over the network. Using a remote PC, tablet or smart phone, use a web browser to connect to the home gateway or registration server. From here, you can turn the devices on or off using the features of the home gateway or registration server.

To configure devices, click on the device to open it. After it is opened, multiple tabs are displayed:

• Specifications – describes the features, usage, local and remote control of the device

• Physical – available modules and power connections

• Config – shows display name, serial number, network configuration, and IoT server

• Attributes – displays the device attributes such as MTBF, power consumption, and cost

To configure the home gateway, click on the device. Within the device multiple tabs are displayed:

• Physical – available modules, and power

• Config – shows display name, interfaces (Internet, LAN, and wireless) to be configured

• GUI – shows services to be turned on/off

• Attributes – shows features and values related to device such as mean time between failure (MTBF), cost, power sources, and wattage

Click Play in the video to explore IoT devices in a Smart Home.

Ethical Hacking

2023-03-24T10:07:00.001+00:00

Ethical Hacking

Welcome to the Course Introduction & Overview Ethical Hacking video! In this video, we will be discussing the basics of ethical hacking, including what it is, why it’s important, and how it can be used to protect your online security. We’ll also be going over some of the most common tools and techniques used in ethical hacking, as well as some tips and tricks for getting started. Whether you’re a beginner or an experienced hacker, this video is sure to provide you with valuable insights and information that you can use to take your skills to the next level. So sit back, relax, and get ready to learn all about ethical hacking!”

I hope that helps! Let me know if you have any other questions or if there’s anything else I can help you with.

video demonstrating how to convert between binary and decimal numbering systems.

2023-03-24T10:03:00.002+00:00

video demonstrating how to convert between binary and decimal numbering systems.

In this tutorial video, we will show you how to easily convert between hexadecimal and decimal numbering systems. We will explain the basic concepts behind these two numbering systems and guide you through step-by-step examples of how to convert numbers between them. You will learn how to convert hexadecimal numbers to decimal numbers and vice versa, using simple methods that you can apply in your everyday work or study. We will also provide tips and tricks to make the process faster and more efficient. By the end of this video, you will have a clear understanding of how to work with these two numbering systems and be able to convert between them with confidence. So, join us now and let's get started!

Exploring Taylor Swift: A Look at the Career and Philanthropy of the Popular Singer-Songwriter

2023-02-25T10:25:00.000+01:00

Exploring Taylor Swift: A Look at the Career and Philanthropy of the Popular Singer-Songwriter

what chatgpt know about taylor swift

Taylor Swift is a renowned American singer-songwriter who has been entertaining audiences with her music since she was a teenager. As an AI language model, ChatGPT "knows" a few things about Taylor Swift that have been publicly reported.

Swift's music has become incredibly popular over the years, with many of her songs topping the charts and earning her numerous awards. She is known for her storytelling abilities, and her songs often explore themes of love, heartbreak, and personal growth. Her early country music roots have evolved into a pop-infused sound that appeals to a broad audience.

Swift has also been active in philanthropy, supporting a number of causes that are important to her. In 2016, she donated $1 million to Louisiana flood relief efforts. She has also supported education initiatives, including donating to public schools and providing scholarships to students.

In addition to her music and philanthropy, Swift has also been a vocal advocate for artists' rights. She has spoken out against music streaming services that do not fairly compensate artists and has worked to protect her own music catalog.

Swift has been the subject of much media attention over the years, both for her music and her personal life. She has been in several high-profile relationships and has also been involved in public feuds with other celebrities.

Overall, Taylor Swift is a talented musician and philanthropist who has made a significant impact on the music industry and beyond. While ChatGPT's knowledge is limited to publicly available information, it is clear that Swift's impact on music and popular culture will continue to be felt for years to come.

#taylorswift #singersongwriter #musicindustry #philanthropy #ArtistsRights #PopCulture #publicfigure #EducationInitiatives #Charity #SocialImpact #PublicPersona #MusicCatalog #AIKnowledge #chatgpt #AI

Bitcoin Price Plummets to $22,911 on Bitfinex: What Does This Mean for Investors?

2023-02-25T09:55:00.002+01:00

Bitcoin Price Plummets to $22,911 on Bitfinex: What Does This Mean for Investors?

Bitcoin, the world's largest and most well-known cryptocurrency, has experienced another significant drop in its value. On February 24, 2023, the price of Bitcoin fell to $22,911 on the Bitfinex exchange, marking a significant drop from its all-time high of nearly $65,000 just a year ago.

This sudden drop has sparked concern among investors and traders alike, as many had hoped that Bitcoin would continue to rise in value and provide significant returns. However, this recent drop has once again demonstrated the volatility of the cryptocurrency market and the inherent risks involved in investing in digital currencies.

One of the factors that may have contributed to this latest drop in Bitcoin's value is the increasing regulatory scrutiny that cryptocurrencies are facing around the world. Governments and financial institutions are becoming increasingly wary of the potential risks associated with cryptocurrencies, particularly with regards to money laundering and terrorist financing. As a result, many countries are implementing stricter regulations on cryptocurrencies, which may be impacting the demand for Bitcoin and other digital assets.

Another possible factor that may be contributing to the decline in Bitcoin's value is the ongoing debate over the future of the cryptocurrency. While some investors and enthusiasts believe that Bitcoin will eventually replace traditional currencies and become a widely accepted form of payment, others are more skeptical and believe that its volatility and lack of regulation will ultimately lead to its downfall.

Despite these concerns, many investors and traders remain bullish on Bitcoin's long-term prospects, citing its limited supply and growing acceptance as a legitimate asset class. Some even believe that the current dip in Bitcoin's value presents a buying opportunity for savvy investors who are willing to weather the market's ups and downs.

In conclusion, the recent drop in Bitcoin's value serves as a stark reminder of the risks involved in investing in cryptocurrencies. While the potential rewards can be significant, investors must also be prepared to weather significant fluctuations in the market and navigate an increasingly complex regulatory landscape. As always, it is important to carefully consider one's investment goals and risk tolerance before entering the cryptocurrency market.

#bitcoin #cryptocurrency #investissement #Volatility #Regulation #riskmanagement #finances #bitfinex #MarketFluctuations #investmentopportunity #blockchain #cryptoinvesting

Fortnite Tips: How to Improve Your Game and Dominate the Battle Royale

2023-02-25T09:43:00.003+01:00

Fortnite Tips: How to Improve Your Game and Dominate the Battle Royale

Fortnite has taken the gaming world by storm with its addictive gameplay, innovative updates, and immersive virtual world. As a battle royale game, it's all about being the last man standing, and there are many strategies and techniques you can use to improve your chances of survival. In this article, we'll go over some essential Fortnite tips to help you dominate the competition.

Master the basics

Before you can start dominating the battlefield, you need to master the basics. This means understanding the game mechanics, knowing how to build structures quickly, and being able to aim and shoot accurately. Spend some time in the game's tutorial mode or play in the low-stress Playground mode to practice these skills.

Know your drop location

When you start a game of Fortnite, you'll need to decide where to drop onto the island. Knowing the best locations to drop can give you an advantage, whether it's by giving you access to better weapons or putting you in a location that's less likely to have other players. Some popular drop locations include Tilted Towers, Retail Row, and Pleasant Park.

Build, build, build

One of the unique aspects of Fortnite is the ability to build structures quickly. Mastering this skill is essential to surviving in the game's later stages, where the map gets smaller, and the remaining players become more aggressive. Always have materials on hand and be ready to build ramps, walls, and other structures to protect yourself or gain a tactical advantage.

Keep an eye on the storm

As the game progresses, the playable area of the island will shrink due to a deadly storm. Keep an eye on the storm's movement and be ready to move quickly to avoid being caught in it. You can also use the storm to your advantage by using it to trap other players or forcing them out of hiding spots.

Use sound to your advantage

Sound is an essential element in Fortnite, as it can give away other players' locations or alert you to incoming danger. Wear headphones or turn up your speakers to hear footsteps, gunshots, and other sounds clearly. Also, be aware that your own actions can make noise, so be careful not to give yourself away.

Know when to engage and when to hide

Knowing when to engage other players and when to hide is key to survival in Fortnite. If you're outgunned or outnumbered, it's often better to retreat and find a better position. On the other hand, if you have the advantage, be aggressive and take out your opponents quickly and decisively.

Stay aware of the game's updates

Finally, Fortnite is continually evolving with new weapons, items, and game modes being added regularly. Stay aware of the game's updates, as they can significantly impact gameplay and strategy. For example, the addition of vehicles like the Quadcrasher or new weapons like the mythic items from popular franchises like Marvel or Star Wars can change the game's dynamics.

In conclusion, mastering these Fortnite tips can give you a significant advantage in the game's competitive Battle Royale mode. Practice these techniques regularly, stay aware of updates, and be willing to adapt your strategy as the game evolves. With these tips, you'll be well on your way to dominating the competition and becoming a Fortnite champion.

#FortniteTips #FortniteGaming #FortniteStrategies #VideoGaming #GamingCommunity

Fortnite: Free Cross-Platform Play Takes the Gaming World by Storm

2023-02-25T09:36:00.002+01:00

Fortnite: Free Cross-Platform Play Takes the Gaming World by Storm

Fortnite is a massively popular video game developed by Epic Games that has taken the gaming world by storm. The game was first released in 2017 and has since amassed a massive following of players from around the world. One of the most notable features of the game is its free cross-platform play, which has helped it become one of the most accessible games of its kind.

Cross-platform play refers to the ability of players to play a game on different devices and platforms while still being able to play with one another. Fortnite allows players to play on a wide range of platforms, including PC, Mac, Xbox, PlayStation, Nintendo Switch, iOS, and Android. This means that no matter what device or platform you prefer, you can still play Fortnite with your friends.

The free cross-platform play has been a significant factor in the game's success. It has helped to create a massive community of players from around the world who can play with one another regardless of the devices they are using. This has helped to make the game more accessible and has allowed players to connect with one another in ways that were previously impossible.

Another notable feature of Fortnite is its battle royale gameplay. The game pits 100 players against one another in a last-man-standing battle, with the goal of being the last player or team standing. The game is fast-paced, action-packed, and incredibly addictive, which has helped it become one of the most popular games of its kind.

Fortnite has also gained a reputation for its innovative updates and events. The developers are constantly adding new content to the game, including new weapons, skins, and game modes. The game also regularly hosts special events, such as concerts and crossovers with other popular franchises, such as Marvel and Star Wars.

Despite its popularity, Fortnite has not been without its controversies. The game's use of microtransactions has been a subject of debate, with some critics arguing that it promotes gambling-like behavior in children. The game has also been criticized for its violent content, which has led to calls for it to be banned in some countries.

Overall, Fortnite has had a massive impact on the gaming world. Its free cross-platform play has helped to create a massive community of players, and its innovative gameplay and updates have kept players engaged and coming back for more. While it may not be without its controversies, there is no denying the game's impact and popularity.

#Fortnite #CrossPlatformPlay #EpicGames #GamingCommunity #BattleRoyale #Microtransactions #InnovativeUpdates #Controversies #PopularFranchises #Marvel #StarWars #LastManStanding #Addictive #Accessible #FreeToPlay #VideoGames #Multiplayer #OnlineGaming #VirtualGaming #GamersUnite #GamingWorld #GamingPhenomenon #GamingCulture #VirtualEntertainment #SocialGaming #OnlineCommunity #VirtualConnections

ChatGPT OpenAI

2023-02-24T15:58:00.011+01:00

ChatGPT OpenAI

ChatGPT is a large language model developed by OpenAI that uses deep learning techniques to generate human-like responses to text-based conversations. It has been designed to simulate human intelligence and can understand and respond to a wide range of topics and questions, making it a valuable tool for a variety of applications.

The development of ChatGPT has been a significant step forward in the field of natural language processing (NLP). NLP involves teaching computers to understand and interpret human language, which is incredibly complex due to the many nuances and variations that exist within language. The development of ChatGPT has made it possible for computers to analyze and respond to natural language in a way that was previously impossible.

One of the most impressive aspects of ChatGPT is its ability to learn from vast amounts of data. It has been trained on a massive dataset of billions of words from the internet, which has allowed it to learn about the many different ways in which people use language. This has given ChatGPT an unparalleled ability to understand and respond to a wide range of queries, making it an incredibly valuable tool for anyone looking to engage in a text-based conversation.

One of the most exciting things about ChatGPT is its potential to revolutionize the way we interact with technology. As it becomes more advanced, it could be used to power a wide range of applications, including chatbots, virtual assistants, and even customer service representatives. This would have a profound impact on businesses, as it would allow them to provide instant, personalized support to their customers, improving their overall customer experience.

However, the development of ChatGPT has also raised some concerns. Some have questioned the ethical implications of creating a machine that can simulate human intelligence so effectively. There are also concerns that it could be used to spread misinformation or to create fake news, as it could be used to generate convincing but false stories.

Despite these concerns, there is no denying that ChatGPT represents a significant breakthrough in the field of NLP. Its ability to understand and respond to natural language in a way that was previously impossible has opened up new possibilities for the development of intelligent systems. As its capabilities continue to evolve, it will be fascinating to see how it is used to shape the future of technology and the way we interact with it.

#chatgpt #OpenAI #NLP #AI #MachineLearning #DeepLearning #NaturalLanguageProcessing #RevolutionaryTechnology #virtualassistant #customerservice #EthicalImplications #futureoftechnology

video demonstrating how to convert between binary and decimal numbering systems.

2023-02-23T15:40:00.004+01:00

video demonstrating how to convert between binary and decimal numbering systems.

In this educational video, we will explore the fundamentals of binary and decimal numbering systems, and demonstrate how to convert between them.

Binary and decimal are two of the most commonly used numbering systems in computer science and digital electronics. Understanding how to convert between them is essential for anyone who wants to work with these technologies.

In this video, we'll start by explaining the basics of binary and decimal systems, including how they work and why they are important. We'll then walk you through several examples of how to convert between binary and decimal numbers, using simple and easy-to-follow steps.

Whether you're a student, an aspiring programmer, or just someone who wants to understand the basics of computer science, this video is the perfect resource for you. Our clear and concise explanations, combined with practical examples and real-world applications, will help you master the art of converting between binary and decimal numbers in no time.

So if you're ready to learn a valuable new skill that will give you a better understanding of computer science and digital electronics, watch this video now and start converting between binary and decimal numbers today!

this description is written by ChatGpt https://chat.openai.com/

Docking Station Versus Port Replicator

2023-02-19T13:07:00.004+01:00

Docking Station Versus Port Replicator

Docking stations and port replicators are two essential devices that enable users to connect peripherals and other devices to their laptops or PCs. However, many people often confuse these two devices and their functionalities. In this video, we'll explain the differences between docking stations and port replicators and help you decide which one best suits your needs.

We'll start by exploring the basic features and functions of both docking stations and port replicators. We'll highlight their advantages and limitations, and explain how they can enhance the productivity of users. Additionally, we'll also discuss their compatibility with different devices and the connectivity options they offer. Through this video, you'll learn how to differentiate between a docking station and a port replicator, and which one you should choose depending on your needs. We'll also offer some tips and tricks to help you get the most out of these devices.

Whether you're a casual user or a professional, this video will provide you with valuable insights into the world of docking stations and port replicators. So, tune in now, and take the first step towards optimizing your workstation!

video demonstration of IOS CLI Primary Command Modes

2023-02-18T22:12:00.004+01:00

IOS CLI Primary Command Modes

The IOS CLI (Command Line Interface) on Cisco devices provides several primary command modes, each with a specific set of commands and functionality. These modes are:

User EXEC mode: This is the default mode you enter when you first connect to a Cisco device. In this mode, you can only run a limited set of commands, such as basic monitoring commands and show commands. The prompt for user EXEC mode is typically a ">" symbol.
Privileged EXEC mode: To access more advanced configuration and troubleshooting commands, you need to enter privileged EXEC mode. This mode is indicated by a "#" symbol at the end of the prompt. You can enter privileged EXEC mode by using the "enable" command and providing the correct password.
Global configuration mode: This mode allows you to configure global parameters on the device, such as hostname, domain name, and interfaces. To enter this mode, you use the "configure terminal" command from privileged EXEC mode. The prompt for global configuration mode is typically "(config)#".
Interface configuration mode: Once you have entered global configuration mode, you can then configure individual interfaces using interface configuration mode. You can enter this mode by specifying the interface you want to configure (e.g. "interface gigabitethernet0/1") and then using the "interface" command. The prompt for interface configuration mode typically shows the interface type and number, followed by "(config-if)#".
Line configuration mode: This mode is used to configure settings for specific lines, such as console or telnet lines. To enter line configuration mode, you use the "line" command from global configuration mode. The prompt for line configuration mode typically shows the line type and number, followed by "(config-line)#".
Router configuration mode: This mode is used specifically for configuring routing protocols on a Cisco router. To enter router configuration mode, you use the "router" command from global configuration mode, followed by the routing protocol you want to configure (e.g. "router ospf 1"). The prompt for router configuration mode typically shows the name of the routing protocol, followed by "(config-router)#".

Each of these primary command modes provides a different level of functionality and access to the configuration and monitoring commands available on a Cisco device. By understanding these modes and how to navigate between them, you can effectively manage and troubleshoot your Cisco network.

Nouveautés de Chrome Copier le lien vers le texte en surbrillance.

2021-11-19T09:47:00.006+01:00

Vous voulez partager un lien ? Passez directement à ce qui vous intéresse.

Lorsque vous partagez des liens, essayez l'option "Copier le lien vers le texte en surbrillance". Lorsque le destinataire ouvre le lien, il est redirigé directement vers la partie que vous aviez sélectionnée sur la page, plutôt qu'en début de page.

Mettez en surbrillance le texte à partager.
Effectuez un clic droit, puis sélectionnez Copier le lien vers le texte en surbrillance.
Collez le lien où vous le souhaitez, par exemple dans un e-mail ou une conversation.

Exemple de lien: Cliquer ICI

video demonstration of Protecting Against Malware

2021-11-03T12:12:00.009+01:00

Protecting Against Malware

Video Explanation – Protecting Against Malware

Malware, short for malicious software, refers to any software that is designed to harm or exploit computer systems, networks, or mobile devices. It can take many forms, including viruses, trojans, worms, spyware, ransomware, and adware. Malware can cause a range of problems, from slowing down your device and stealing your personal data to damaging your files or rendering your device unusable.

Protecting against malware is essential for keeping your device and personal data safe. Here are some ways to protect yourself against malware:

Install antivirus software: Antivirus software is designed to detect and remove malware from your device. It can also prevent malware from infecting your device in the first place. Be sure to keep your antivirus software up-to-date with the latest virus definitions to ensure the best protection.
Keep your software up-to-date: Outdated software can contain vulnerabilities that malware can exploit. Keep your operating system, applications, and plugins up-to-date with the latest security patches.
Be cautious of downloads and email attachments: Be careful when downloading files or email attachments from unknown sources. Malware is often spread through infected files and links.
Use strong passwords: Strong passwords make it harder for hackers to access your device and personal data. Avoid using simple, easy-to-guess passwords, and use different passwords for different accounts.Malware, short for malicious software, refers to any software that is designed to harm or exploit computer systems, networks, or mobile devices. It can take many forms, including viruses, trojans, worms, spyware, ransomware, and adware. Malware can cause a range of problems, from slowing down your device and stealing your personal data to damaging your files or rendering your device unusable. Protecting against malware is essential for keeping your device and personal data safe. Here are some ways to protect yourself against malware: Install antivirus software: Antivirus software is designed to detect and remove malware from your device. It can also prevent malware from infecting your device in the first place. Be sure to keep your antivirus software up-to-date with the latest virus definitions to ensure the best protection. Keep your software up-to-date: Outdated software can contain vulnerabilities that malware can exploit. Keep your operating system, applications, and plugins up-to-date with the latest security patches. Be cautious of downloads and email attachments: Be careful when downloading files or email attachments from unknown sources. Malware is often spread through infected files and links. Use strong passwords: Strong passwords make it harder for hackers to access your device and personal data. Avoid using simple, easy-to-guess passwords, and use different passwords for different accounts. Use a firewall: A firewall can help block unauthorized access to your device and prevent malware from communicating with the outside world. Backup your data: Regularly backing up your important data can help you recover from a malware attack. Be sure to store your backups in a secure location. Overall, being vigilant and proactive about your device's security is the best way to protect against malware.
Use a firewall: A firewall can help block unauthorized access to your device and prevent malware from communicating with the outside world.
Backup your data: Regularly backing up your important data can help you recover from a malware attack. Be sure to store your backups in a secure location.

Overall, being vigilant and proactive about your device's security is the best way to protect against malware.

video demonstration of the show ip interface brief command

2021-06-10T09:55:00.003+01:00

video demonstration of the show ip interface brief command

The show ip interface brief command is used in Cisco networking devices to display a summary of the configuration and status of all interfaces on the device. Here's a demonstration of the command:

First, log in to the Cisco device using the terminal or console connection.
Enter the privileged EXEC mode by typing enable and providing the enable password if required.
Type show ip interface brief and press Enter.

Here is an example output of the command:

objectivec
Router# show ip interface brief

Interface       IP-Address     OK? Method Status                Protocol
GigabitEthernet0/0    10.0.0.1     YES  NVRAM  up                    up      
GigabitEthernet0/1    192.168.1.1  YES  NVRAM  up                    up      
Serial0/0/0          unassigned   YES  NVRAM  down                  down    
Serial0/1/0          unassigned   YES  NVRAM  administratively down down

In the example output above, there are four interfaces listed: GigabitEthernet0/0, GigabitEthernet0/1, Serial0/0/0, and Serial0/1/0. The columns provide the following information:

Interface: the name of the interface
IP-Address: the IP address assigned to the interface (if any)
OK?: whether the interface is operational (YES) or not (NO)
Method: the method used to assign the IP address to the interface (in this case, NVRAM)
Status: the status of the interface (up or down)
Protocol: the routing protocol currently in use on the interface (if any)

The output shows that GigabitEthernet0/0 and GigabitEthernet0/1 are both up and have IP addresses assigned to them, while Serial0/0/0 and Serial0/1/0 are both down and do not have IP addresses assigned to them.

video demonstration of how to configure a switch virtual interface

2021-06-10T09:45:00.005+01:00

how to configure a switch virtual interface

To access the switch remotely, an IP address and a subnet mask must be configured on the SVI. To configure an SVI on a switch, use the interface vlan 1 global configuration command. Vlan 1 is not an actual physical interface but a virtual one. Next assign an IPv4 address using the ip address ip-address subnet-mask interface configuration command. Finally, enable the virtual interface using the no shutdown interface configuration command.

After these commands are configured, the switch has all the IPv4 elements ready for communication over the network.

video demonstration on how to save switch configuration files

2021-06-10T09:34:00.001+01:00

video demonstration on how to save switch configuration files

If changes made to the running configuration do not have the desired effect and the running-config file has not yet been saved, you can restore the device to its previous configuration by removing the changed commands individually or reload the device using the reload privileged EXEC mode command to restore the startup-config.

The downside to using the reload command to remove an unsaved running configuration is the brief amount of time the device will be offline, causing network downtime.

When initiating a reload, the IOS will detect that the running config has changes that were not saved to the startup configuration. A prompt will appear to ask whether to save the changes. To discard the changes, enter n or no.

Alternatively, if undesired changes were saved to the startup configuration, it may be necessary to clear all the configurations. This requires erasing the startup configuration and restarting the device. The startup configuration is removed by using the erase startup-config privileged EXEC mode command. After the command is issued, the switch will prompt you for confirmation. Press Enter to accept.

After removing the startup configuration from NVRAM, reload the device to remove the current running configuration file from RAM. On reload, a switch will load the default startup configuration that originally shipped with the device.

video demonstration of how to secure administrative access to a switch Banner Messages

2021-06-04T09:56:00.005+01:00

how to secure administrative access to a switch Banner Messages

Although requiring passwords is one way to keep unauthorized personnel out of a network, it is vital to provide a method for declaring that only authorized personnel should attempt to gain entry into the device. To do this, add a banner to the device output. Banners can be an important part of the legal process in the event that someone is prosecuted for breaking into a device. Some legal systems do not allow prosecution, or even the monitoring of users, unless a notification is visible.

To create a banner message of the day on a network device, use the banner motd # the message of the day # global config command. The “#” in the command syntax is called the delimiting character. It is entered before and after the message. The delimiting character can be any character as long as it does not occur in the message. For this reason, symbols such as the "#" are often used. After the command is executed, the banner will be displayed on all subsequent attempts to access the device until the banner is removed.

Because banners can be seen by anyone who attempts to log in, the message must be worded very carefully. The exact content or wording of a banner depends on the local laws and corporate policies. The banner should state that only authorized personnel are allowed to access the device. Any wording that implies a login is "welcome" or "invited" is inappropriate. Further, the banner can include scheduled system shutdowns and other information that affects all network users.

Click Play in the figure to view a video demonstration of how to secure administrative access to a switch.

video demonstration of the various hotkeys and shortcuts

2021-06-04T09:44:00.002+01:00

video demonstration of the various hotkeys and shortcuts

video demonstration of Context Sensitive Help and Command Syntax Check

2021-06-04T09:36:00.004+01:00

Context Sensitive Help and Command Syntax Check

The IOS has two forms of help available:

Context-Sensitive Help Command Syntax Check Context-sensitive help enables you to quickly find which commands are available in each command mode, which commands start with specific characters or group of characters, and which arguments and keywords are available to particular commands. To access context-sensitive help, simply enter a question mark, ?, at the CLI.

Command syntax check verifies that a valid command was entered by the user. When a command is entered, the command line interpreter evaluates the command from left to right. If the interpreter understands the command, the requested action is executed, and the CLI returns to the appropriate prompt. However, if the interpreter cannot understand the command being entered, it will provide feedback describing what is wrong with the command.

Click Play in the figure to view a video demonstration of context-sensitive help and command syntax check.

video demonstration of how to move between various IOS CLI modes

2021-06-03T12:08:00.001+01:00

video demonstration of how to move between various IOS CLI modes

Various commands are used to move in and out of command prompts. To move from user EXEC mode to privileged EXEC mode, use the enable command. Use the disable privileged EXEC mode command to return to user EXEC mode.

Note: Privileged EXEC mode is sometimes called enable mode. To move in and out of global configuration mode, use the configure terminal privileged EXEC mode command. To return to the privileged EXEC mode, enter the exit global config mode command. There are many different sub-configuration modes. For example, to enter line sub-configuration mode, you use the line command followed by the management line type and number you wish to access. To exit a sub-configuration mode and return to global configuration mode, use the exit command. Notice the changes in the command prompt. Switch(config)# line console 0 Switch(config-line)# exit Switch(config)# To move from any sub-configuration mode of the global configuration mode to the mode one step above it in the hierarchy of modes, enter the exit command. To move from any sub-configuration mode to the privileged EXEC mode, enter the end command or enter the key combination Ctrl+Z. Switch(config-line)# end Switch# You can also move directly from one sub-configuration mode to another. Notice how after selecting an interface, the command prompt changes from (config-line)# to (config-if)#. Switch(config-line)# interface FastEthernet 0/1

Switch(config-if)#

video demonstration of navigating between IOS modes

2021-06-03T11:57:00.006+01:00

video demonstration of navigating between IOS modes

Video - IOS CLI Primary Command Modes (2 min) Let's examine the IOS command modes in Packet Tracer. I'm using Packet Tracer 6.2, and I have a desktop PC with a console connection to a 2960 series switch. I'll click on the desktop PC, click on the terminal emulation program and click "okay," and you can see that I'm presented with a console command line interface

To configure the device, the user must enter Global Configuration Mode, which is commonly called global config mode.

From global config mode, CLI configuration changes are made that affect the operation of the device as a whole. Global configuration mode is identified by a prompt that ends with (config)# after the device name, such as Switch(config)#.

Global configuration mode is accessed before other specific configuration modes. From global config mode, the user can enter different sub-configuration modes. Each of these modes allows the configuration of a particular part or function of the IOS device. Two common sub-configuration modes include:

Line Configuration Mode - Used to configure console, SSH, Telnet, or AUX access.

Interface Configuration Mode - Used to configure a switch port or router network interface.

When using the CLI, the mode is identified by the command-line prompt that is unique to that mode. By default, every prompt begins with the device name. Following the name, the remainder of the prompt indicates the mode. For example, the default prompt for line configuration mode is Switch(config-line)# and the default prompt for interface configuration mode is Switch(config-if)#.