Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
-
Economics & Finance
Articles by Satish Kumar
Page 73 of 94
SMTP Service Extension Parameters
SMTP (Simple Mail Transfer Protocol) is a protocol for transmitting email messages. An SMTP service extension is a feature or capability that can be added to the base SMTP protocol to provide additional functionality. These extensions are defined in the form of parameters that can be included in the SMTP command stream to indicate support for a particular extension or to provide additional information needed to use the extension. SMTP Extension Negotiation Flow Client ...
Read MoreSupporting outbound SMTP extensions
Outbound SMTP (Simple Mail Transfer Protocol) extensions are optional features that enhance email functionality beyond basic message delivery. These extensions are negotiated between sending and receiving mail servers during the SMTP conversation using the EHLO command, which advertises supported capabilities. SMTP Extension Negotiation Process Client (Sender) Server (Receiver) EHLO domain.com 250-PIPELINING 250-8BITMIME 250 DSN Server advertises supported extensions ...
Read MoreStop Wi-Fi from stealing
Wi-Fi stealing is a growing security concern that can have serious consequences for individuals and businesses alike. Also known as piggybacking, this practice occurs when someone gains unauthorized access to a wireless network without the owner's permission, potentially compromising personal data and network resources. Understanding how Wi-Fi stealing works and implementing proper security measures is crucial for protecting your network from unauthorized access and maintaining your digital privacy. What is Wi-Fi Stealing? Wi-Fi stealing involves connecting to a wireless network that is not owned by you or was not intended for your use. Attackers typically scan for ...
Read MoreStreaming Stored Video
Streaming stored video is the process of delivering pre-recorded video content over a network, allowing users to begin watching before the entire file downloads. Unlike traditional download methods where users must wait for complete file transfer, streaming enables immediate playback as content is transmitted in real-time. This technology has revolutionized media consumption, making vast libraries of movies, TV shows, and video content accessible on-demand through streaming services rather than traditional cable or satellite television. Streaming Stored Video Process Video Storage Stream ...
Read MoreAttacks against 3G mobile networks
3G mobile network attacks are security threats specifically targeting third-generation mobile communication networks. These networks provide wireless data and voice services to mobile devices through cellular infrastructure. Understanding these attacks is crucial as 3G networks, while largely superseded by 4G and 5G, still serve as fallback networks and remain vulnerable to various security exploits. Attackers exploit weaknesses in 3G protocol design, network infrastructure, and device implementations to compromise user privacy, steal sensitive data, or disrupt network services. 3G Network Attack Vectors Mobile Device User ...
Read MoreStructure and Types of IP Address
The Internet has become an integral part of our lives, and we rely on it for communication, entertainment, and information. Every device that connects to the internet requires an IP address. An IP (Internet Protocol) address is a unique numerical identifier assigned to every device connected to a network that uses the Internet Protocol for communication. It consists of four numbers separated by periods (dots), such as 192.168.0.1. Each number can range from 0 to 255, giving us over 4 billion possible combinations for IPv4 addresses. Structure of IP Address An IP address structure varies depending on ...
Read MoreSupernetting in Network Layer
Supernetting is the process of combining multiple contiguous IP address blocks into a single larger address block. Also known as route aggregation or prefix aggregation, supernetting helps optimize network performance by reducing routing table sizes and simplifying network management at the network layer. This technique is essential in modern networks where the growth of internet connectivity demands efficient address management and routing strategies. Supernetting: Combining Multiple Networks 192.168.0.0/24 192.168.1.0/24 192.168.2.0/24 Aggregate ...
Read MoreAvailability in Information Security
Availability in information security refers to the ability of authorized users to access and use data and systems as intended. It is one of the three pillars of the CIA triad (Confidentiality, Integrity, Availability) that forms the foundation of information security. Ensuring availability means that critical systems and data remain accessible to legitimate users whenever needed. Availability ensures business continuity and prevents disruptions that could lead to financial losses, productivity decline, and damage to organizational reputation. For mission-critical services like healthcare systems, emergency services, and financial institutions, availability becomes even more crucial. CIA Triad ...
Read MoreSustainable development with 5GIOT
The world is facing critical challenges from rapidly changing climate patterns and environmental degradation caused by human activity. Sustainable development offers a path forward by meeting current needs without compromising future generations' ability to meet their own needs, balancing economic, social, and environmental considerations. 5GIOT (5G Internet of Things) represents the convergence of ultra-fast 5G networks with IoT devices, creating unprecedented opportunities for real-time data collection, analysis, and automated response systems that can drive sustainable development initiatives across various sectors. 5GIOT Ecosystem for Sustainable Development 5G ...
Read MoreAvalanche Effect in Cryptography
The avalanche effect in cryptography refers to the phenomenon where a small change in the input of a cryptographic function, such as a hash function, results in a significant and seemingly unrelated change in the output. This property is desirable in cryptographic functions because it makes it difficult for an attacker to predict the output of the function based on partial knowledge of the input. For example, consider a hash function that takes an input string and produces a fixed-size output. If the avalanche effect is strong, then making a small change to the input string, such as changing ...
Read More