Found 1870 Articles for Data Structure

Attacks are defined as passive and active. A passive attack is an attempt to understand or create use of data from the system without influencing system resources; whereas an active attack is an attempt to change system resources or influence their operation.Passive Attacks − Passive attacks are in the feature of eavesdropping on, or observation of, transmissions. The objective of the opponent is to access data that is being transmitted. There are two method of passive attacks are release of message contents and traffic analysis.The release of message contents is simply learn. A telephone chat, an electronic mail message, and ... Read More

The OSI security architecture provides the managers responsible for the security of an organization in describing the necessity for security. The OSI security architecture was introduced as an ‘international standard’ which allow the computer and communication dealer produce the products that have security characteristics depends on this architecture.The OSI security architecture has a structure description of services and structure for supporting security to the organization’s data. The OSI security architecture targets on security attacks, structure, and services.These can be represented concisely as follows −Security attack − Security attack is any action that deal the security of data owned by an ... Read More

In Information security, it is a collection of practices intended to convey personal information secure from unapproved access and modification throughout of storing or broadcasting from one place to another place.Information security is designed and required to secure the print, digital, and some personal, sensitive, and private information from unapproved persons. It very well may be utilized to get information from being misused, affirmation, destruction, modification, and interruption.There are the major goals of information security which are as follows −Confidentiality − The goals of confidentiality is that only the sender and the predetermined recipient should be adequate to approach the ... Read More

A security model is a computer model which can be used to analyze and enforce security policies. It does not require some previous formation and it can be organized on the access right model or inspecting computing model or computation model.A security model is a mechanism in which a security policy is produced. The development of this security policy is regulate to a definite setting or example of a policy.A security policy depends upon authentication, but construct within the confines of a security model. For instance, it is designing a security model depends upon authentication and authorization. It can consider ... Read More

Information security is a group of practices designed to perform data capture from unauthorized access and variation for the period of storing or broadcasting from one position to another.Information security is designed and required to secure the print, digital, and other private, susceptible, and personal information from unauthorized persons. It is generally used to secure information from being obsolete, recognition, destruction, modification, and disruption.Information security is the prevention and security of computer assets from unauthorized access, use, alteration, deterioration, destruction, and various threats.There are two main sub-types such as physical and logical. Physical information security includes tangible security devices. Logical ... Read More

Application Gateway is a type of firewall that supports application-level control over network traffic. Application gateways can be used to deny access to the resources of private networks to distrusted clients over the web.An application gateway is an application program that runs on a firewall system between two networks. When a client program creates a link to a destination service, it connects to an application gateway, or proxy. The client then compromise with the proxy server to interact with the destination service. In effect, the proxy creates the connection with the destination behind the firewall and acts on behalf of ... Read More

Application-level GatewayAn application gateway or application level gateway (ALG) is a firewall proxy which offers network security. It filters incoming node traffic to certain specifications which define that only transmitted network application information is filtered. Such network applications such as File Transfer Protocol (FTP), Telnet, Real Time Streaming Protocol (RTSP) and BitTorrent.An application layer gateway also known as an application proxy gateway. It can perform a several functions at the application layer of an infrastructure, generally known as layer 7 in the OSI model. These functions can include address and port translation, resource allocation, software response control, and synchronization of ... Read More

A firewall can be represented as a special type of network security device or a software program that monitors and filters incoming and outgoing network traffic based on a represented group of security rules. It facilitate as a barrier between internal private networks and external sources (including the public Internet).The objective of a firewall is to enable non-threatening traffic and prevent malicious or unwanted data traffic for securing the computer from viruses and attacks. A firewall is a cybersecurity tool that filters network traffic and provide users block malicious application from accessing the web in infected computers.Firewalls can be executed ... Read More

Symmetric Key Cryptography In symmetric key cryptography, an individual key is used for both encryption and decryption. The sender needs the key to encrypt the plaintext and sends the cipher document to the receiver. The receiver used the similar key (or ruleset) to decrypt the message and recover the plaintext. Because an individual key is used for both functions, symmetric key cryptography is also known as symmetric encryption. Symmetric key cryptography schemes are usually categorized such as stream ciphers or block ciphers. Stream ciphers works on a single bit (byte or computer word) at a time and execute some form ... Read More

Asymmetric cryptography is a second form of cryptography. It is called a Public-key cryptography. There are two different keys including one key is used for encryption and only the other corresponding key should be used for decryption. There is no other key can decrypt the message and not even the initial key used for encryption. The style of the design is that every communicating party needs only a key pair for communicating with any number of other communicating parties.Asymmetric cryptography is scalable for use in high and ever expanding environments where data are generally exchanged between different communication partners. Asymmetric ... Read More