A DMZ (Demilitarized Zone) in networking is a physical or logical subnet that separates an internal local area network (LAN) from untrusted external networks, such as the internet. It adds an additional layer of security by isolating external-facing services, such as web servers, mail servers, and FTP servers, from the internal network. This configuration helps … Read more
The rule of NAT (Network Address Translation) is to modify network address information in IP packet headers while they are in transit across a traffic routing device. This allows multiple devices on a local network to be mapped to a single public IP address, facilitating internet access for all devices without the need for a … Read more
A NAT (Network Address Translation) works by modifying the IP address information in the headers of IP packets as they pass through a router or firewall. This process allows multiple devices on a private network to share a single public IP address for accessing external networks, such as the internet. When an internal device sends … Read more
The purpose of using Spanning Tree Protocol (STP) in computer networks is to prevent and manage network loops that can occur in Ethernet environments. STP ensures network reliability and stability by dynamically identifying and blocking redundant paths between switches or bridges. By maintaining a loop-free topology, STP enables efficient data transmission and minimizes the risk … Read more
The need for SD-WAN (Software-Defined Wide Area Network) arises from the evolving demands of modern enterprise networks. Traditional WAN architectures often struggle to support the increasing volume of cloud applications, remote workforce needs, and diverse network traffic patterns. SD-WAN addresses these challenges by providing centralized management, automation, and dynamic traffic steering capabilities across geographically dispersed … Read more
Multiprotocol Label Switching (MPLS) is used primarily for efficiently forwarding data packets across a network based on labels rather than IP addresses. It combines the scalability of IP routing with the speed of Layer 2 switching, making it suitable for optimizing traffic flow in large networks, including service provider networks and enterprise environments. MPLS works … Read more
Factors of Quality of Service (QoS) encompass several key elements that collectively contribute to ensuring satisfactory performance and reliability of network services. These factors include: Bandwidth: The available capacity of the network link or interface, which determines how much data can be transmitted within a given period. Adequate bandwidth allocation is crucial for supporting QoS … Read more
Wi-Fi Protected Access 2 (WPA2) is a security protocol designed to secure wireless computer networks. It is an improvement over its predecessor, WPA, and provides stronger encryption and security mechanisms to protect Wi-Fi networks from unauthorized access and attacks. WPA2 operates using the IEEE 802.11i standard and utilizes the Advanced Encryption Standard (AES) encryption algorithm, … Read more
SSH (Secure Shell) offers several benefits that make it a widely used protocol for secure remote access, file transfer, and management of networked devices: The benefits of SSH include: Security: SSH provides strong encryption of data during transmission, preventing unauthorized access and eavesdropping. It uses cryptographic techniques to authenticate parties and ensure data integrity, offering … Read more
Network Address Translation (NAT) improves security primarily by acting as a barrier between the public internet and private networks. NAT modifies the source and/or destination IP addresses of packets as they traverse a router or firewall, masking the internal IP addresses of devices within the private network. This process hides the structure of the internal … Read more