Logical Link Control (LLC) is a sublayer of the Data Link Layer in the Open Systems Interconnection (OSI) model. It provides a service interface between the Media Access Control (MAC) sublayer and the Network Layer. LLC Functions: The LLC sublayer is responsible for several functions, including: Multiplexing and demultiplexing – Multiplexing is the process of…
Servers are computers that manage and store information for other devices on a network. Their workloads can define them, such as web servers, mail servers, DNS servers, Proxy servers, database servers… Some servers are physical, while others are virtual, meaning they run on software rather than hardware. Physical Servers vs Virtual Servers There are mainly…
SecureCRT is a popular SSH client used by network engineers and system administrators to manage network devices (switch, router, …) and servers securely. However, it is commercial software that requires a license to use. You are in the right place if you are looking for free alternatives to SecureCRT. In this post, we will discuss…
Data Monitor app is an open-source application that provides a simple and user-friendly interface for monitoring and managing internet / network usage. In this blog post, we will explore the features and benefits of Data Monitor and how it can help you manage your internet usage effectively. Real-time Internet Usage Tracking The Data Monitor app…
When securing your computer network, using a software firewall is an essential step. A software firewall is a program that monitors and controls the incoming and outgoing network traffic based on predetermined security rules. It helps prevent unauthorized access and protects your system from malware and cyber-attacks. In this article, we’ll take a look at…
Every device connected to a network has a unique identifier called an IP address. The IP address is used for addressing at the Network layer of the OSI model (internet level of the TCP/IP architecture). It is a unique address of every device connected to the network, more precisely, every network interface on the network….
In this article, we present the 5 best bandwidth monitoring tools for Windows that are specifically designed for network engineers. Bandwidth monitoring is an essential aspect of network administration and management. It helps in tracking the usage of bandwidth and optimizes the network’s performance. The information obtained from bandwidth monitoring can help identify the cause…
MPLS (Multiprotocol Label Switching) in networking is a type of data-carrying technology for high-performance IP networks. MPLS operates at an OSI Model layer that is generally considered to lie between traditional definitions of Layer 2 (data link layer) and Layer 3 (network layer) and thus is often referred to as a “Layer 2.5” protocol. How…
In today’s digital age, networks are a crucial component in the functioning of businesses and organizations. A switch is a fundamental component of a network that plays a vital role in connecting and transmitting data between different devices. So, what is a switch in networking… What is a Switch in Networking? A switch is a…
Nmap is an open-source networking utility (network scanner) used to discover IP addresses (hosts) and open ports on the network by sending packets and analyzing the responses. Nmap started as a Linux utility and was ported to other operating systems including Windows and macOS. Network engineers use Nmap for port scanning, ping sweeps, OS detection,…