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Articles by Satish Kumar
Page 70 of 94
SSH Meaning in Computer Network
Secure Shell (SSH) is a network protocol that provides secure, encrypted communication between two computers over an insecure network. It is primarily used to access remote devices securely, replacing older protocols like Telnet that transmitted data in plaintext. SSH creates an encrypted tunnel between the client and server, ensuring that all data transmitted remains confidential and protected from eavesdropping or tampering. This makes it an essential tool for system administrators, developers, and anyone who needs secure remote access to networked systems. How SSH Works SSH uses a combination of symmetric and asymmetric encryption to establish secure connections. ...
Read MoreWhat is ASA features?
Adaptive Security Appliance (ASA) is Cisco's flagship network security device that provides comprehensive firewall, VPN, and intrusion prevention capabilities. ASA combines multiple security functions into a single appliance, making it a popular choice for organizations seeking robust network protection with centralized management. ASA devices are designed to protect networks at the perimeter and provide secure remote access while maintaining high performance and availability. They serve as the first line of defense against cyber threats and unauthorized access attempts. ASA Security Features Overview Firewall & ACL ...
Read MoreCisco Router basic commands
Cisco routers are a popular choice for network administrators due to their robustness and reliability. They are used in a wide range of environments, from small home networks to large enterprise networks. To effectively manage a Cisco router, it is essential to have a good understanding of the basic commands that are used to configure and troubleshoot the device. Accessing the Cisco Router The first step in configuring a Cisco router is to access the device. This can be done using a variety of methods, including Telnet, SSH, and the console port. The most common method is to ...
Read MoreAdministration and Ownership of Internet
The internet has become an integral part of daily life for billions of people around the world. It is a vast network of interconnected computers and servers that enable the exchange of information, communication, and commerce. However, despite its widespread use, many people are unaware of how the internet is administered and who owns its various components. This article explores the key organizations and entities that play a role in internet governance, as well as the challenges and controversies in this complex landscape. The Internet Corporation for Assigned Names and Numbers (ICANN) The Internet Corporation for Assigned Names ...
Read MoreCisco Router Modes
Cisco routers are a vital component of modern networks, and they come with a hierarchical command-line interface organized into different modes. Each mode provides specific levels of access and functionality, allowing network administrators to view information, configure settings, and manage routing protocols effectively. Understanding these modes and their proper usage is essential for network administrators to optimize network performance, implement security policies, and troubleshoot issues efficiently. Each mode has distinct capabilities and access restrictions that control what commands can be executed. Cisco Router Command Modes Hierarchy ...
Read MoreAdministrative Distance (AD) and Autonomous System (AS)
Administrative Distance (AD) and Autonomous System (AS) are fundamental concepts in computer networking that help manage routing decisions and network organization. Administrative Distance determines the trustworthiness of routing information, while Autonomous Systems define administrative boundaries in large networks. What is Administrative Distance (AD)? Administrative Distance is a trustworthiness metric used by routers to choose between routing information received from different sources. It ranges from 0 to 255, where lower values indicate higher trustworthiness. When a router receives multiple routes to the same destination from different routing protocols, it uses AD to determine which route to install in ...
Read MoreCisco Switch Configuration basic commands
Cisco switches are widely used in enterprise networks for their reliability and advanced features. However, configuring these switches can be a daunting task for those new to networking. In this article, we will cover some basic commands that are commonly used when configuring Cisco switches. Accessing the Switch The first step in configuring a Cisco switch is to access the switch's command-line interface (CLI). This can be done through a console cable or through a Telnet or SSH connection. Console Access: Connect a console cable to the switch and a computer's serial port. Open terminal emulator software ...
Read MoreCISM vs CISSP Certification
Information security is a critical aspect of any organization, and it is essential to have certified professionals who can manage and protect sensitive data. Two of the most popular certifications in the field of information security are CISM (Certified Information Security Manager) and CISSP (Certified Information Systems Security Professional). Both certifications are globally recognized and highly respected in the industry, but they have different focuses and target audiences. Target Audience CISM is designed for experienced information security professionals who manage and oversee information security programs. It is ideal for those who have at least five years of experience ...
Read MorePerformance Problems in Computer Networks
Network performance refers to the quality and speed of a network's transmission of data between devices. It is typically measured by factors such as bandwidth, latency, and throughput. Network performance is critical because it determines how effectively devices can communicate and access shared resources like internet services or file servers. Poor network performance leads to slow response times, reduced productivity, and frustrated users. Common Network Performance Problems Bandwidth Bottlenecks Insufficient capacity Interference Signal ...
Read MoreClasses of Routing Protocols
Routing protocols are essential mechanisms that enable network devices to determine the best paths for data transmission across interconnected networks. These protocols ensure efficient and reliable data delivery by making intelligent routing decisions based on various network metrics and topologies. Understanding the different classes of routing protocols helps network administrators choose the most appropriate solution for their specific network requirements, size, and complexity. Classes of Routing Protocols Distance Vector Link State Hybrid ...
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