Raza, Author at razazwork.com

Dig Command Decoded: Unveiling DNS Lookup Secrets

by RazaCommands October 9, 2024October 9, 2024No Comments

The dig command (short for Domain Information Groper) is a simple but powerful tool used to look up DNS (Domain Name System) information. If you’ve ever wondered how the internet knows which website to load when you type a domain name, understanding DNS and the dig command will give you a peek behind the curtain. In this beginner-friendly guide, we’ll explain how this command works, how you can use it, and why it’s an important tool for troubleshooting DNS issues.

What is DNS?

DNS is like the phonebook of the internet. It translates human-readable domain names (like example.com) into IP addresses (such as 93.184.216.34), which are the real addresses computers use to communicate with each other. Whenever you visit a website, your computer asks a DNS server for the IP address associated with the domain name you typed.

NSlookup Command: Your Ultimate Guide to DNS Troubleshooting

by RazaCommands, Network September 20, 2024September 20, 2024No Comments

When troubleshooting DNS issues, the nslookup command is an essential tool in the arsenal of any network engineer or systems administrator. Whether you’re trying to identify IP addresses or diagnose connectivity problems, nslookup provides valuable insight into how DNS servers are resolving domain names. This comprehensive guide dives into the technical details of the nslookup command, breaking down its usage and explaining how it can assist in DNS troubleshooting.

What is NSlookup?

nslookup stands for “Name Server Lookup.” It is a network administration command-line tool used to query Domain Name System (DNS) records. DNS is responsible for translating human-readable domain names like www.example.com into IP addresses, which machines use to identify each other on the network. By using nslookup, you can verify whether the DNS is resolving domain names properly, check the propagation of DNS changes, or troubleshoot issues such as incorrect mappings or DNS server errors.

Efficient Network Management with Ping Monitoring

by RazaNetwork, Protocols July 16, 2024July 15, 2024No Comments

In today’s digital age, where businesses and services heavily rely on uninterrupted network connectivity, efficient network management has become a crucial aspect of IT operations. One of the fundamental tools in achieving this efficiency is ping monitoring. This blog post will delve into the importance of ping monitoring, how it works, and best practices for leveraging it to maintain optimal network performance.

What is Ping Monitoring?

Ping monitoring is a technique used to test the reachability of a host on an Internet Protocol (IP) network. It employs the Internet Control Message Protocol (ICMP) to send echo request packets to the target host and waits for an echo reply. The time it takes for the echo reply to return, known as latency or round-trip time (RTT), is measured. If the echo reply is not received, the host is considered unreachable, indicating potential network issues.

How to speed up the DNS propagation?

by RazaDNS records, DNS servers, Network April 30, 2024April 30, 2024No Comments

DNS propagation is a fundamental concept in the world of the internet, crucial for both web developers and everyday users. In this article we will dive into what it is, why it takes time, and practical steps to speed up the process.

What is DNS Propagation?

DNS propagation is the process by which the updated DNS records of a domain are spread across all the DNS servers worldwide. Essentially, it’s the period during which updates to a DNS record (such as changing the IP address linked to a domain name) take to be fully updated across the internet’s web servers.

When you make changes to your DNS records, like switching hosting providers or moving to a different server, those changes aren’t immediate. Every server that caches DNS information needs to update its cache, leading to a propagation period.

Host command: What is it?

by RazaCommands April 18, 2024April 18, 2024No Comments

Host command is a versatile utility that plays a crucial role in network diagnostics and domain resolution. Let’s delve into what exactly it is, how it functions, and its practical applications. So, let’s begin!

What is the Host Command?

The host command is a command-line utility used in Unix-like operating systems, including Linux and macOS. It serves the primary purpose of performing DNS (Domain Name System) lookups. DNS is the system responsible for translating human-readable domain names into IP addresses, enabling computers to locate and communicate with each other on the internet.

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TCP: Definition & Details

by RazaNetwork, Protocols February 23, 2024February 23, 2024No Comments

Transmission Control Protocol (TCP) stands as one of the foundational pillars of modern computer networking, facilitating reliable data transmission across interconnected systems. As a core component of the Internet Protocol Suite (TCP/IP), this protocol ensures that data packets arrive intact, in sequence, and without errors from sender to receiver. Understanding it is fundamental for anyone delving into computer networking or seeking insights into how the internet operates.

What is TCP?

TCP is a communication protocol that enables two devices to establish a connection and exchange streams of data. Unlike its counterpart, the User Datagram Protocol (UDP), TCP prioritizes reliability over speed. It achieves this by implementing mechanisms for error detection, packet reordering, and flow control.

Everything you need to know about UDP

by RazaDNS servers, Network, Protocols January 3, 2023June 21, 2023One Comment

UDP has truly earned its place as an integral part of the networking community. It’s a reliable and lightweight protocol enables fast communication between computers. And making it ideal for real-time applications like video streaming or online gaming. Moreover, with its many benefits over TCP, UDP will remain a key player in data transmission for years to come! So buckle up – let’s deeply dive into why UDP should be a crucial part of your networking toolkit!

Why does DNS use UDP?

How to stop a DDoS attack?

by RazaNetwork December 20, 2022May 10, 2023No Comments

A DDoS is a very disruptive attack. Every online organization and business can suffer. Criminals don’t stop targeting victims. Therefore we can’t let our guard down! We have to be ready to stop them!

DDoS attack definition

A Distributed Denial of Service (DDoS) attack is defined as a criminal attempt to affect the regular operation of a targeted network, service, application, or server by saturating it with huge loads of malicious traffic. Different techniques are used by criminals to create, amplify, and send the traffic loads that are needed to shut down a target. What makes these attacks very effective is that traffic comes not from one but from many different sources. Multiple compromised devices around the world can take part in a DDoS attack. This makes a DDoS attack hard to stop and the attacker difficult to track.

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Getting familiar with Private DNS server

by RazaDNS servers, Network November 24, 2022January 16, 2024No Comments

Today we will explore one really important component of your secure online surfing – A Private DNS server. Let’s start.

Private DNS server: Explanation & Example

Let’s imagine you begin your Android/ Apple device’s search for various items while connected to a public network (like one at a shopping mall). Your search queries could be intercepted by someone else on the same network who has the necessary abilities, allowing them to know exactly what you’re looking for. That might not be hazardous, or it might be dangerous. In either case, why run the risk?

Ping command – Why do you need to use it?

by RazaCommands, Network November 18, 2022November 21, 2022No Comments

Ping command – Definition

The Ping command is one of your operating system’s built-in network diagnostic commands (Windows, Linux, macOS, FreeBSD, etc.). Ping is used to testing connectivity between your device and the target, which can be a hostname such as google.com or an IP address such as 192.168.2.1.

Ping sends four 32-byte messages to the target by default, using the ICMP protocol (Internet control message protocol).

Popular examples of Ping command