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Infrastructure Security
Chapter 10
Principles of Computer Security, Fifth Edition
Copyright © 2018 by McGraw-Hill Education. All rights reserved.
Objectives (1 of 2)
Construct networks using different types of network devices.
Enhance security using security devices.
Understand virtualization concepts.
Enhance security using NAC/NAP methodologies.
Identify the different types of media used to carry network signals.
Describe the different types of storage media used to store information.
Principles of Computer Security, Fifth Edition
Copyright © 2018 by McGraw-Hill Education. All rights reserved.
2
Objectives (2 of 2)
Use basic terminology associated with network functions related to information security.
Describe the different types and uses of cloud computing.
Principles of Computer Security, Fifth Edition
Copyright © 2018 by McGraw-Hill Education. All rights reserved.
3
Key Terms (1 of 3)
Basic packet filtering
Bridge
Cloud computing
Coaxial cable
Collision domain
Concentrator
Data loss prevention (DLP)
Firewall
Hypervisor
Hub
Infrastructure as a Service (IaaS)
Internet content filters
Load balancer
Modem
Network access control
Principles of Computer Security, Fifth Edition
Copyright © 2018 by McGraw-Hill Education. All rights reserved.
Basic packet filtering – Filtering that looks at each packet entering or leaving the network and then either accepts the packet or rejects the packet based on user-defined rules. Each packet is examined separately.
Bridge – A network device that separates traffic into separate collision domains at the data layer of the OSI model.
Cloud computing – The automatic provisioning of on demand computational resources across a network.
Coaxial cable – A network cable that consists of a solid center core conductor and a physical spacer to the outer conductor which is wrapped around it. Commonly used in video systems.
Collision domain – An area of shared traffic in a network where packets from different conversations can collide.
Concentrator – A device used to manage multiple similar networking operations, such as provide a VPN endpoint for multiple VPNs.
Data loss prevention (DLP) – Technology, processes, and procedures designed to detect when unauthorized removal of data from a system occurs. DLP is typically
active, preventing the loss of data, either by blocking the transfer or dropping the connection.
Firewall – A network device used to segregate traffic based on rules.
Hypervisor - A low-level program that allows multiple operating systems to run concurrently on a single host computer.
Hub – A network device used to connect devices at the physical layer of the OSI model.
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Week7 Part4-IS
RevisionSu2013
Types of Networks
There are different types of networks. Each type has different characteristics and
therefore different security needs. Some of the fundamental differentiating attributes of
the various types of networks are:
the physical distance the network spans
the topology of the network nodes
the types of media used for communication between nodes in the network
the different devices supported on the network
the different applications supported on the network
the different groups of users permitted on the network
the different protocols supported on each network
Depending on the type of network there may be different information security
requirements requiring that various protocols, security services, security mechanisms are
used in a fashion to support that type of network.
While each network environment has some characteristics and security needs unique to
that environment, there are many security techniques that should be universally applied to
all environments. For example; sound policies and procedures, risk assessment of the
assets, user awareness training, encryption technology, authentication technology, sound
credential (password) selection and protection, malware protection, firewalls are a few
security techniques that need to be applied in all of the networks albeit in configurations
that best suits a particular environment.
Local Area Network (LAN)
A LAN network covers a small geographic area that takes advantage of high speed data
transfers usually implemented through Ethernet or fiber. A LAN could be a home, office,
group of building with local proximity (university, business). LANs typically share
resources such as file servers and printers.
Wide Area Network (WAN)
A WAN covers a large geographic area that may require connection through satellite,
high speed dedicated lines and other means. The internet is a WAN. WANs can connect
LANs together into a larger organizational structure that can be used to share resources
such as file, email, dns servers to name a few. Resources can be shared using slower
connections on geographically separated areas across the WAN.
Wireless Networks and Mobile Networks
The movement to laptop systems at home and workplaces accelerated the mobility of
computing.
As employees traveled between offices, client sites, home and various other remote
locations they could remain connected to company servers as long as the remote site had
connectivity to the companies’ intranet. Initially this connectivity was provided by
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detected by systems that had wireless cards.
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genera ...
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This document provides an overview of computer networks. It defines a network as two or more connected computers that share information. All networks require devices, hubs or switches to connect multiple devices, and routers to handle communication as more devices connect. Each device needs an IP address for identification and location. The document discusses key aspects of networks including size (LANs and WANs), protocols, topology, hardware components, and cabling infrastructure. It provides examples of how different types of networks are structured. The purpose of networks is to facilitate communication, sharing of hardware, files and software between connected devices.
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What is IT infrastructure, and what are the stages and drivers of IT.pdf
What is IT infrastructure, and what are the stages and drivers of IT infrastructure evolution?
Define IT infrastructure from both a technology and a services perspective. I need an answer to
these questions that is different from the one on site from an expert.
Solution
IT infrastructure: Consists of set of physical devices with softwares required for the operation of
the entire enterprise. IT infrastructure provides a foundation for the following
1)Serving customers
2) Working with vendors
3)Managing business processes
IT infrastructure components
Usual services provided by IT Infrastrucure : Security services, Data center migration, Remote
infrastructure management, Cloud services, Virtualization services ,Network services etc.
Stages and drivers of IT infrastructure evolution
1)Generalpurpose mainframe & minicomputer era:1959 to present
In 1958 IBM first mainframes were introduced
In 1965 DEC minicomputers were introduced
2)Personal computer era: 1981 to present
In 1981 IBM PC were introduced
Heavy usage of standalone desktop computers with office productivity softwares.
3)Client/server era :1983 to present
Consists of desktop or laptop clients networked to more powerful servers like network or
application or Web. The network between clients and servers may be two tiered or N-tiered
Two tiered network: Here direct communication takes place between client and server and no
intermediate between client and server.The advantage is understanding and easy maintenance.
N-tiered network : The whole work of the entire network is distributed over several different
levels of servers to reduce the overall cost.
4)Enterprise Internet era: 1992-present
The TCP/IP suite enables firms to link devices and local area networks to form a single
enterprise-wide network.
5)Cloud Computing: 2000 to present
This is a fast growing computing and here firms and individuals obtain computing softwares
over the Internet or through other networks.
IT Infrastructure in terms of technology perspective : In technology perspective IT infrastructure
is defined as the shared technology resources for the organisation’s specific information system
applications. This includes a set of physical devices and softwares that are required for operation
of the entire enterprise.
Service perspective of an IT Infrastructure:In Service perspective IT infrastructure is defined as
platform that provides the platform for serving customers, working with vendors, and managing
internal firm business processes.In service perspective IT infrastructure focuses on the services
provided by hardware and software..
Computer network note
ARPANET was the first wide-area packet switching network developed in the late 1960s under the U.S. Defense Department to connect research computers and allow for more effective communication. It served as the basis for the modern Internet and implemented the TCP/IP protocol. A computer network connects computers together to share resources, data, and applications over various connection types. Key network components include network interface cards, servers, routers, bridges, hubs, switches, and gateways. Modern computer technologies that utilize networks include artificial intelligence, data science, the Internet of Things, blockchain, and edge computing.
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Architecting the Enterprise Internet of Things
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The document provides an overview of information technology concepts including the historical development of IT, types and generations of computers, and applications of IT. It discusses the progression from the pre-mechanical age through various generations of computers based on technologies like vacuum tubes, transistors, integrated circuits, and microprocessors. The key types of computers covered are supercomputers, mainframes, minicomputers, and microcomputers. Various applications of these computers in fields like research, weather forecasting, banking, education, and personal use are also summarized.
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The operating system and networking form the backbone of digital systems. Operating systems manage computer hardware and resources, providing services like process management, memory allocation, file management, and device communication. Modern operating systems also enable networking capabilities. Networking allows devices to connect and share resources through various network types, protocols, IP addressing, routing, and wireless technologies. Together, operating systems and networking allow devices to communicate and access information over local and global computer networks.
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Infrastructure Security
Chapter 10
Principles of Computer Security, Fifth Edition
Copyright © 2018 by McGraw-Hill Education. All rights reserved.
Objectives (1 of 2)
Construct networks using different types of network devices.
Enhance security using security devices.
Understand virtualization concepts.
Enhance security using NAC/NAP methodologies.
Identify the different types of media used to carry network signals.
Describe the different types of storage media used to store information.
Principles of Computer Security, Fifth Edition
Copyright © 2018 by McGraw-Hill Education. All rights reserved.
2
Objectives (2 of 2)
Use basic terminology associated with network functions related to information security.
Describe the different types and uses of cloud computing.
Principles of Computer Security, Fifth Edition
Copyright © 2018 by McGraw-Hill Education. All rights reserved.
3
Key Terms (1 of 3)
Basic packet filtering
Bridge
Cloud computing
Coaxial cable
Collision domain
Concentrator
Data loss prevention (DLP)
Firewall
Hypervisor
Hub
Infrastructure as a Service (IaaS)
Internet content filters
Load balancer
Modem
Network access control
Principles of Computer Security, Fifth Edition
Copyright © 2018 by McGraw-Hill Education. All rights reserved.
Basic packet filtering – Filtering that looks at each packet entering or leaving the network and then either accepts the packet or rejects the packet based on user-defined rules. Each packet is examined separately.
Bridge – A network device that separates traffic into separate collision domains at the data layer of the OSI model.
Cloud computing – The automatic provisioning of on demand computational resources across a network.
Coaxial cable – A network cable that consists of a solid center core conductor and a physical spacer to the outer conductor which is wrapped around it. Commonly used in video systems.
Collision domain – An area of shared traffic in a network where packets from different conversations can collide.
Concentrator – A device used to manage multiple similar networking operations, such as provide a VPN endpoint for multiple VPNs.
Data loss prevention (DLP) – Technology, processes, and procedures designed to detect when unauthorized removal of data from a system occurs. DLP is typically
active, preventing the loss of data, either by blocking the transfer or dropping the connection.
Firewall – A network device used to segregate traffic based on rules.
Hypervisor - A low-level program that allows multiple operating systems to run concurrently on a single host computer.
Hub – A network device used to connect devices at the physical layer of the OSI model.
Infrastructure as a Service (IaaS) – The automatic, on-demand provisioning of infrastructure elements, operating as a service; a common element of cloud computing.
Internet content filters – A content-filtering system use to protect corporations from employees’ viewing of inappropriate or illegal content at the workplace.
Means of ict
ICT stands for Information and Communications Technology and refers to technologies that provide access to information through communications. It involves the use of computers and digital equipment to store, retrieve, transmit and manipulate data. ICT includes traditional computer technologies like word processing, spreadsheets, databases and presentation software as well as digital communication technologies that allow people and organizations to share information over networks and the internet. ICT is an important part of managing information in organizations and supporting business goals and objectives.
Types of Networks Week7 Part4-IS RevisionSu2013 .docx
Types of Networks
Week7 Part4-IS
RevisionSu2013
Types of Networks
There are different types of networks. Each type has different characteristics and
therefore different security needs. Some of the fundamental differentiating attributes of
the various types of networks are:
the physical distance the network spans
the topology of the network nodes
the types of media used for communication between nodes in the network
the different devices supported on the network
the different applications supported on the network
the different groups of users permitted on the network
the different protocols supported on each network
Depending on the type of network there may be different information security
requirements requiring that various protocols, security services, security mechanisms are
used in a fashion to support that type of network.
While each network environment has some characteristics and security needs unique to
that environment, there are many security techniques that should be universally applied to
all environments. For example; sound policies and procedures, risk assessment of the
assets, user awareness training, encryption technology, authentication technology, sound
credential (password) selection and protection, malware protection, firewalls are a few
security techniques that need to be applied in all of the networks albeit in configurations
that best suits a particular environment.
Local Area Network (LAN)
A LAN network covers a small geographic area that takes advantage of high speed data
transfers usually implemented through Ethernet or fiber. A LAN could be a home, office,
group of building with local proximity (university, business). LANs typically share
resources such as file servers and printers.
Wide Area Network (WAN)
A WAN covers a large geographic area that may require connection through satellite,
high speed dedicated lines and other means. The internet is a WAN. WANs can connect
LANs together into a larger organizational structure that can be used to share resources
such as file, email, dns servers to name a few. Resources can be shared using slower
connections on geographically separated areas across the WAN.
Wireless Networks and Mobile Networks
The movement to laptop systems at home and workplaces accelerated the mobility of
computing.
As employees traveled between offices, client sites, home and various other remote
locations they could remain connected to company servers as long as the remote site had
connectivity to the companies’ intranet. Initially this connectivity was provided by
having Ethernet cabling available for remote users to physically plug their laptops into.
Eventually, companies started installing wireless hotspots that could be automatically
detected by systems that had wireless cards.
The proliferation of wireless connectivity and internet use spread from the workplace to
genera ...
Week 6 - Networking and the Internet.pptx
Decimal Interchange Code (EBCDIC pronounced EB-see-dik) scheme is used primarily on mainframe computers and high-end
servers
Ch02
This document provides an overview of key concepts in information systems, including databases, data storage methods, information integration challenges, business intelligence, and how organizations use IT to support business activities. It describes the core components of IT infrastructure including hardware, software, networks and how they work together. It also discusses databases, data organization, data storage and sharing methods, and how IS supports business transactions and processes.
Network Notes
This document provides an overview of computer networks. It defines a network as two or more connected computers that share information. All networks require devices, hubs or switches to connect multiple devices, and routers to handle communication as more devices connect. Each device needs an IP address for identification and location. The document discusses key aspects of networks including size (LANs and WANs), protocols, topology, hardware components, and cabling infrastructure. It provides examples of how different types of networks are structured. The purpose of networks is to facilitate communication, sharing of hardware, files and software between connected devices.
Introduction to Information and Education Technology 1
This document provides an introduction to information and educational technology. It discusses the scope of information technology including its components like computers, communication technologies, and how they are used to store, process, distribute, and access data. It also covers basic computer hardware and software concepts such as computer architecture, computer organization, system software, and different types of application software including examples. Finally, it discusses computer peripherals and aspects of human-computer interaction.
17581556 045 lab 3
This document discusses the key components of IT infrastructure, including computer hardware platforms, operating system platforms, enterprise software applications, data management and storage, networking and telecommunications platforms, internet platforms, and consulting and system integration services. It provides details on each of the seven major components that make up an organization's overall IT infrastructure. The infrastructure refers to all the hardware, software, networks and related equipment necessary to develop, operate and support IT services.
What is IT infrastructure, and what are the stages and drivers of IT.pdf
What is IT infrastructure, and what are the stages and drivers of IT infrastructure evolution?
Define IT infrastructure from both a technology and a services perspective. I need an answer to
these questions that is different from the one on site from an expert.
Solution
IT infrastructure: Consists of set of physical devices with softwares required for the operation of
the entire enterprise. IT infrastructure provides a foundation for the following
1)Serving customers
2) Working with vendors
3)Managing business processes
IT infrastructure components
Usual services provided by IT Infrastrucure : Security services, Data center migration, Remote
infrastructure management, Cloud services, Virtualization services ,Network services etc.
Stages and drivers of IT infrastructure evolution
1)Generalpurpose mainframe & minicomputer era:1959 to present
In 1958 IBM first mainframes were introduced
In 1965 DEC minicomputers were introduced
2)Personal computer era: 1981 to present
In 1981 IBM PC were introduced
Heavy usage of standalone desktop computers with office productivity softwares.
3)Client/server era :1983 to present
Consists of desktop or laptop clients networked to more powerful servers like network or
application or Web. The network between clients and servers may be two tiered or N-tiered
Two tiered network: Here direct communication takes place between client and server and no
intermediate between client and server.The advantage is understanding and easy maintenance.
N-tiered network : The whole work of the entire network is distributed over several different
levels of servers to reduce the overall cost.
4)Enterprise Internet era: 1992-present
The TCP/IP suite enables firms to link devices and local area networks to form a single
enterprise-wide network.
5)Cloud Computing: 2000 to present
This is a fast growing computing and here firms and individuals obtain computing softwares
over the Internet or through other networks.
IT Infrastructure in terms of technology perspective : In technology perspective IT infrastructure
is defined as the shared technology resources for the organisation’s specific information system
applications. This includes a set of physical devices and softwares that are required for operation
of the entire enterprise.
Service perspective of an IT Infrastructure:In Service perspective IT infrastructure is defined as
platform that provides the platform for serving customers, working with vendors, and managing
internal firm business processes.In service perspective IT infrastructure focuses on the services
provided by hardware and software..
Computer network note
ARPANET was the first wide-area packet switching network developed in the late 1960s under the U.S. Defense Department to connect research computers and allow for more effective communication. It served as the basis for the modern Internet and implemented the TCP/IP protocol. A computer network connects computers together to share resources, data, and applications over various connection types. Key network components include network interface cards, servers, routers, bridges, hubs, switches, and gateways. Modern computer technologies that utilize networks include artificial intelligence, data science, the Internet of Things, blockchain, and edge computing.
10 New Web Application and Security.pptx
Web application security is the process of protecting websites and online services against different security threats that exploit vulnerabilities in an application’s code . Common targets for web application attacks are content management systems Web application security is important to any business as it helps to keep web applications functioning smoothly and protect businesses from cyber vandalism, data theft, unethical competition, and other negative consequences . Web applications may face a number of attack types depending on the attacker’s goals, the nature of the targeted organization’s work. A web application (web app) is an application program that is stored on a remote server and delivered over the internet through a browser interface. Web services are web apps by definition and many, although not all, websites contain web apps.
1570272924-3
This document proposes using Software Defined Networking (SDN) to improve security in Internet of Things (IoT) networks. It discusses how SDN allows centralized control and programmability that can be used to implement security applications and dynamically enforce security policies. The document presents a framework that uses an SDN controller and edge node running virtual machines. It collects network flow data and uses an anomaly detection algorithm to identify malicious flows based on variance from expected values. When anomalies are detected, security policies are applied through the SDN controller to mitigate the threats, such as rate limiting or blocking malicious traffic flows. Simulation results show the effectiveness of the anomaly detection algorithm improves as the time window size increases.
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Internet Of Things(IoT) is emerging technology in future world.The term IoT comprises of Cloud computing, Data mining,
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consumption is also main fator for IoT application designing.The various protocols such as MQTT,AMQP,XMPP are used in
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The document outlines the IT needs for new facilities in Queretaro, Mexico. It details hardware requirements such as 330 desktop and laptop computers, physical servers for domain control, applications, backups, and Exchange. It also lists needs for storage, cabling, networking switches, security, phone systems, wireless, internet access, backups, email (Exchange or Office 365), UPS systems, IP cameras, software licensing, antivirus, asset management, service management tools, end user data migration, conferencing, and other considerations like network design and data center build out. Migration from the existing Aeromexico network is also addressed.
Internet of Things.pptx
This document provides an overview of the Internet of Things (IoT). It defines IoT as a network of physical objects embedded with software and sensors that allows them to connect and exchange data. Examples of IoT applications are given such as smart homes, healthcare devices, and mobile phones. The need for IoT is discussed in terms of connecting everyday objects to share data with minimal human intervention. An overview of the evolution and growth of IoT is provided from the 1970s to present day. Key characteristics and architectural models of IoT systems are described. Popular technologies that power IoT such as hardware, communication protocols, and cloud platforms are outlined. Development tools for building IoT solutions like Arduino, Raspberry Pi, and Eclipse
Architecting the Enterprise Internet of Things
While business leaders might drive enterprise Internet of Things (IoT) initiatives, responsibility for managing connected devices and equipment, building infrastructure capacity, and securing data and applications usually falls on IT. Choosing the right IoT ecosystem architecture and technology enables you to minimize cost while ensuring security and dynamic, analytics-driven action. While some vendors advocate a one-size-fits-all approach, Dell uses a holistic, objective methodology to determine the right IoT ecosystem for your unique environment. Learn how Dell's IoT-specific gateways, edge analytics software and infrastructure solutions provide flexible architecture options for multiple IoT use cases.
INTRODUCTION TO COMPUTER
The document provides an overview of information technology concepts including the historical development of IT, types and generations of computers, and applications of IT. It discusses the progression from the pre-mechanical age through various generations of computers based on technologies like vacuum tubes, transistors, integrated circuits, and microprocessors. The key types of computers covered are supercomputers, mainframes, minicomputers, and microcomputers. Various applications of these computers in fields like research, weather forecasting, banking, education, and personal use are also summarized.
CHAPTER 1-Introduction of Advanced Network Technology and Facilities.pptx
This document discusses advanced network technology concepts including computer networks, data centers, cloud computing, software-defined networking, 5G, Wi-Fi 6, the Internet of Things (IoT), network automation, edge computing, and analytics. It describes how these technologies work and some of their advantages, such as improved communication and information sharing, more convenient resource access, lower costs, and automation of network tasks to improve efficiency.
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This document discusses IoT network architecture and design. It explores drivers for new network architectures like scale, security, constrained devices, data, and legacy support. It compares the oneM2M and IoT World Forum IoT architectures, which divide functions into layers like applications, services, and networks. It also presents a simplified IoT architecture with two stacks: the data management and compute stack, and the core functional stack consisting of things, communications networks, and applications.
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