Information Technology BLOG

Through this article we will jump into the very first step to learn how to configure a port on a cisco switch.   In order to configure a small network as a beginner first you need to know what is a switch   ( click me ). Basically cisco equipements are the most common switches so we are going to use the cisco syntax in this article, if you are interested in other equipements like huawei or, HP, ARUBA or others just leave a comment. 1 - Log to the switch using the login and the password  (use the command >enable) 2 - Than you should enter the previliged mode wich is (#); using the command #configure terminal you will access this mode 3 - Choose the port that you need to configure examlpe:      #interface fastethernet 0/1          Than type this command      #switchport mode access       switchport means this port is going to switch packets     and it`s mode is ACCESS, means it...

Installing Python on your Desktop First of all, we need to install Python, In order to do that, we should go to PYTHON's official website and download it from there. Here is a link to download Python https://www.python.org/downloads/ Python is available for Linux, Windows, and macOS, choose the installation file based on the type of OS you're using. On windows 10, The installation is very simple you'll need to download the executable and then simply launch it. Do not forget to select "ADD PYTHON (Python version) to PATH" at the beginning of the installation process. After the installation is complete and in order to test Python you can open a simple Command Line Prompt than just type "Python" If it displays this kind of message : Then everything is fine. Try this message : >>>print("Hello world") and it will print out Hello World message  This is...

What is a router? Routers are responsible for transmitting packets from one end host on the internet, maybe a laptop to and from other end-hosts that are connected to the internet like a web server that we are accessing. Routers are not computers that you might recognize, routers are specialized pieces of computer hardware that is built to do one task over and over and over again and that determines where a packet should go.  If the router only has two connections then when a packet comes in on one connection, it has to go out on the other and to some degree, there's no real point to have a router there at all same thing with the other direction because a router is on a destination for traffic it's just there to route traffic to move it towards a destination that's an important distinction between end hosts and routers. An end host can be a PC or a server... Routers typically don't initiate that much traffic, they can initiate a little bit maybe usi...

What is a SWITCH ? A network Switch is a networking device that connects devices together, these devices could be, computers, printers, other switches, routers or even firewalls and servers.. It uses a technique that is called packet switching to receive, process and forward data to the destination Unlike less advanced network HUBS a network switch forwards data only to one or multiple devices that need to receive it, rather than broadcasting the data out of each of its interfaces. A network switch contains multiple ports and is considered as a network bridge that uses Hardware addresses or MAC addresses, to process and forward data at the link layer from layer 2 of the OSI model Some switches can also process data at the network layer which is LAYER 3, and that happens by additionally incorporating routing functionality that most commonly uses IP address to perform packet forwarding. This kind of switches is known as LAYER 3 switches. A Switch is a device that...

What are NETCONF and YANG?? 1) Definitions - Acronym : NETwork CONFiguration Protocol, It is a network device management protocol, provides a mechanim for configuring devices and querying the network configuration protocol and status. It looks just like SNMP !! But as we already now SNMP uses MIB (Management Information Base) files to model data. NETCONF uses YANG to describe the interaction models between the NETCONF client and server. 2) WHY would we use NETCONF and YANG? Guys it`s the era of network automation ! Traditional CLI mode and SNMP do not meet the requirements of CLOUD BASED NETWORK because of these disadvanatges:    - Traditional CLI is based on MAN-MACHINE interfaces,    - Configurations are complex,    - Maintenance costs are too expensive and you know that configuration changes from a vendor to         another and device interworking is hard. Some vendor examples: CISCO JUN...

Definition: AI or Artificial intelligence is the simulation of human intelligence processes by machines. Three main processes are used : 1- Learning: Acquiring specific pieces of information and rules 2- Reasoning: Conclude through rules 3- Self-connection  Two kinds of AI: 1- Weak Artificial Intelligence: It is a system that repeats the same particular task like SIRI, this kind needs human intervention. 2- Strong Artificial Intelligence or known as Artificial GENERAL Intelligence  It is a system that recognizes human actions and abilities, it tries to find a solution when there is a problem, sometimes it replaces human work and tasks. How Artificial Intelligence became alive? Thanks to cheaper GPUs (Graphics Processing Units), BIG DATA and Algorithms that Artificial Intelligence became a reality. Artificial Intelligence was programmed to treat special problems that a normal computer is not able to resolve on its own like perception, planning...

Security Information and Event Management or SIEM, grew out of two requirements. One was to contend with the flood of alerts issued from IPS or Intrusion Prevention Systems and IDS or Intrusion Detection Systems which were overwhelming security teams. IDS were used to measure and prove compliance to various legislations. A deluge of compliance legislation appeared in the first two decades of the twenty-first century in reply to numerous high-profile network breaches. In the other hand, the technology needed several things: First, logs aggregation from many network sources, such as network and security devices, servers and databases, and applications into a central repository for analysis and pattern detection. Second, storing data logs for a period of time to satisfy auditing requirements. Third, correlation, monitoring and notifying events in real-time.  SIEM is primarily an information platform. As CyberAttacks became more sophisticated and stealthy, demands for informati...