Network Security And Firewalls In E Commerce Pdf

network security and firewalls in e commerce pdf

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Watch a replay of our Security Virtual Summit to get original research, product updates, and analyst comments. Network security is any activity designed to protect the usability and integrity of your network and data. Network security combines multiple layers of defences at the edge and in the network.

Network security

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Published on Jul 19, Network Security is the process of taking physical and software preventative measures to protect the underlying networking infrastructure from unauthorized access, misuse, malfunction, modification, destruction, or improper disclosure, thereby creating a secure platform for computers, users and programs to perform their permitted critical functions within a secure environment.

SlideShare Explore Search You. Submit Search. Home Explore. Successfully reported this slideshow. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime. Network security for E-Commerce. Upcoming SlideShare. Like this presentation? Why not share! Embed Size px. Start on. Show related SlideShares at end. WordPress Shortcode.

Published in: Technology. Full Name Comment goes here. Are you sure you want to Yes No. Kapil Potdar. Show More. No Downloads. Views Total views. Actions Shares. No notes for slide. Network security for E-Commerce 1. Learning Objectives 1. Document the trends in computer and network security attacks. Describe the common security practices of businesses of all sizes.

Understand the basic elements of EC security. Explain the basic types of network security attacks. Describe common mistakes that organizations make in managing security. Discuss some of the major technologies for securing EC communications.

Detail some of the major technologies for securing EC networks components. Client Server Security 2. Data and Transaction Security 5. Basic Security Issues authentication The process by which one entity verifies that another entity is who he, she, or it claims to be authorization The process that ensures that a person has the right to access certain resources auditing The process of collecting information about attempts to access particular resources, use particular privileges, or perform other security actions Prepared by Hem Sagar Pokhrel, Lecturer E-Commerce, Prime College Types of Threats and Attacks technical attack An attack perpetrated using software and systems knowledge or expertise common security vulnerabilities and exposures CVEs Publicly known computer security risks, which are collected, listed, and shared by a board of security-related organizations cve.

Types of Threats and Attacks denial-of-service DoS attack An attack on a Web site in which an attacker uses specialized software to send a flood of data packets to the target computer with the aim of overloading its resources distributed denial-ofservice DDoS attack A denial-of-service attack in which the attacker gains illegal administrative access to as many computers on the Internet as possible and uses the multiple computers to send a flood of data packets to the target computer Prepared by Hem Sagar Pokhrel, Lecturer E-Commerce, Prime College Exhibit Types of Threats and Attacks virus A piece of software code that inserts itself into a host, including the operating systems, in order to propagate; it requires that its host program be run to activate it worm A software program that runs independently, consuming the resources of its host in order to maintain itself, that is capable of propagating a complete working version of itself onto another machine Prepared by Hem Sagar Pokhrel, Lecturer E-Commerce, Prime College Securing EC Communications access control Mechanism that determines who can legitimately use a network resource passive tokens Storage devices e.

Securing EC Communications Biometric systems Authentication systems that identify a person by measurement of a biological characteristic, such as fingerprints, iris eye patterns, facial features, or voice Physiological biometrics Measurements derived directly from different parts of the body e. That's the good news. The bad news is that without proper access control, anyone else can too.

Configured with filters to restrict packet traffic to designated addresses, screening routers also limit the types of services that can pass through them. Most Common Security Threats cont. Coding see encryption takes place using a key that ideally is known only by the sender and intended recipient of the message. One of the most effective means of ensuring data security and integrity is encryption. Ciphers Prepared by Hem Sagar Pokhrel, Lecturer E-Commerce, Prime College In cryptography, a cipher is an algorithm for performing encryption or decryption—a series of well-defined steps that can be followed as a procedure.

An alternative, less common term is encipherment. Typically, a cryptosystem consists of three algorithms: one for key generation, one for encryption, and one for decryption.

Otherwise, the confidentiality of the encrypted information is compromised. Private Key Encryption.. Public Key Encryption.. Public Key Cryptography How it works? Now, only Bob will be able to Encrypt symmetric secret keys to protect the symmetric keys during exchange over the network. Create digital signatures to provide authentication and non- repudiation for online entities.

Create digital signatures to provide data integrity for electronic files and documents. Common Cryptosystems a. RSA lets you choose the size of your public key. The output of the signature process is called the "digital signature. How digital Signature works? Digital signature creation uses a hash result derived from and unique to both the signed message and a given private key. For the hash result to be secure, there must be only a negligible possibility that the same digital signature could be created by the combination of any other message or private key.

Digital signature verification is the process of checking the digital signature by reference to the original message and a given public key, thereby determining whether the digital signature was created for that same message using the private key that corresponds to the referenced public key.

The encrypted message digest becomes the digital signature and is attached to the original data. In essence, the Certificate Authority is responsible for saying "yes, this person is who they say they are, and we, the CA, verify that". Rather, an "authentication server" maintains a file of obscure facts about each registered user. The server then transmits an encrypted message containing the token, which can be decoded with the user's key. The message contains an authentication token that allows users to log on to network services.

Two important SSL concepts are: 1. SSL Connection and 2. SSL session. That is, the Web server must be able to prove its identity to your Web browser before the transaction can proceed. Write short note on third party authentication protocol Kerberos. There are a number of systems that enable you to create networks using the Internet as the medium for transporting data.

Virtual Private Network.. The alternative of using truly dedicated lines for a private network are expensive propositions. As the name implies, the secure electronic transaction SET protocol is used to facilitate the secure transmission of consumer credit card information via electronic avenues, such as the Internet. When a user might change organizations or lose his or her key pair, or an e-commerce site using SSL may discontinue its operations; a certificate must be revoked before it expires.

The complexity of SET 2. The need for the added security. You just clipped your first slide! Clipping is a handy way to collect important slides you want to go back to later.

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What You Need to Know About Securing Your Ecommerce Site Against Cyber Threats

Internet security is a branch of computer security specifically related to not only Internet , often involving browser security and the World Wide Web , [ citation needed ] but also network security as it applies to other applications or operating systems as a whole. Its objective is to establish rules and measures to use against attacks over the Internet. Many methods are used to protect the transfer of data, including encryption and from-the-ground-up engineering. The current focus is on prevention as much as on real time protection against well known and new threats. An internet user can be tricked or forced into downloading software that is of malicious intent onto a computer.

One of the major challenges that companies face when trying to secure their sensitive data is finding the right tools for the job. Even for a common tool such as a firewall sometimes called a network firewall , many businesses might not have a clear idea of how to find the right firewall or firewalls for their needs, how to configure those firewalls, or why such firewalls might be necessary. A firewall is a type of cybersecurity tool that is used to filter traffic on a network. Firewalls can be used to separate network nodes from external traffic sources, internal traffic sources, or even specific applications. Firewalls can be software, hardware, or cloud-based, with each type of firewall having its own unique pros and cons. The primary goal of a firewall is to block malicious traffic requests and data packets while allowing legitimate traffic through. Firewall types can be divided into several different categories based on their general structure and method of operation.

PDF | E-Commerce security issues can be grouped under the The installation of new software, a change in the firewall rules, or the. discovery.

Network Security – Firewalls

A firewall is a network security device that monitors incoming and outgoing network traffic and decides whether to allow or block specific traffic based on a defined set of security rules. Firewalls have been a first line of defense in network security for over 25 years. They establish a barrier between secured and controlled internal networks that can be trusted and untrusted outside networks, such as the Internet.

Ecommerce sites will always be a hot target for cyberattacks. For would-be thieves, they are treasure troves of personal and financial data. And for businesses of all sizes, the cost of a breach both in loss of data and in customer trust can be hugely damaging for businesses of all sizes.

Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. If you continue browsing the site, you agree to the use of cookies on this website. See our User Agreement and Privacy Policy. See our Privacy Policy and User Agreement for details. Published on Jul 19,

Network security consists of the policies, processes and practices adopted to prevent, detect and monitor unauthorized access, misuse , modification, or denial of a computer network and network-accessible resources. Users choose or are assigned an ID and password or other authenticating information that allows them access to information and programs within their authority. Network security covers a variety of computer networks, both public and private, that are used in everyday jobs: conducting transactions and communications among businesses, government agencies and individuals.

Network security is any activity designed to protect the usability and integrity of your network and data. If you're looking to increase protection for your remote employees so they can work from any device, at any time, from any location, get started with the Cisco Secure Remote Worker solution. Network security combines multiple layers of defenses at the edge and in the network. Each network security layer implements policies and controls. Authorized users gain access to network resources, but malicious actors are blocked from carrying out exploits and threats.

Он открывал секрет, открывал ключ к шифру-убийце - умоляя, чтобы люди его поняли… моля Бога, чтобы его секрет вовремя достиг агентства. - Три, - прошептала она, словно оглушенная. - Три! - раздался крик Дэвида из Испании. Но в общем хаосе их никто, похоже, не слышал.

Сьюзан осторожно приоткрыла дверь и посмотрела на глянцевую, почти зеркальную стену шифровалки. Узнать, следит ли за ней Хейл, было невозможно. Нужно быстро пройти в кабинет Стратмора, но, конечно, не чересчур быстро: Хейл не должен ничего заподозрить.

Так и есть, примерно через каждые двадцать строк появляется произвольный набор четырех знаков. Сьюзан пробежала все их глазами. PFEE SESN RETM - Альфа-группы из четырех знаков, - задумчиво проговорила Сьюзан.  - И частью программы они явно не являются. - Да бросьте вы это, - проворчал Джабба.

 Нет. Он подстраховался - передал копию ключа анонимной третьей стороне на тот случай… ну, если с ним что-нибудь случится. Это можно было предвидеть, - подумала Сьюзан.

 Читайте! - Джабба обливался.  - В чем разница. Должна же она. - Да! - Соши ткнула пальцем в свой монитор.

What Is Network Security?

Здесь говорится о другом изотопе урана.

Стратмор что-то задумал. - И не пытайтесь, коммандер, - прошипел.  - Вы рискуете попасть в Сьюзан. Хейл выжидал. Стояла полная тишина, и он внимательно прислушался.

Ни у кого не вызывало сомнений, что Стратмор любит свою страну. Он был известен среди сотрудников, он пользовался репутацией патриота и идеалиста… честного человека в мире, сотканном из лжи. За годы, прошедшие после появления в АНБ Сьюзан, Стратмор поднялся с поста начальника Отдела развития криптографии до второй по важности позиции во всем агентстве. Теперь только один человек в АНБ был по должности выше коммандера Стратмора - директор Лиланд Фонтейн, мифический правитель Дворца головоломок, которого никто никогда не видел, лишь изредка слышал, но перед которым все дрожали от страха.

 - Коммандер. Внезапно Сьюзан вспомнила, что он должен быть в лаборатории систем безопасности. Она кружила по пустому кабинету, все еще не преодолев ужас, который вызвало у нее общение с Хейлом. Надо выбираться из шифровалки.

У нее даже перехватило дыхание. Почему.