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VPN
VPN

... A virtual private network (VPN) extends a private network across a public network This is done by establishing a virtual point to point connection through the use of dedicated connections, encryption, or a combination of the two VPN technology is also used by ordinary Internet users to connect to pr ...
The Internet and Its Uses
The Internet and Its Uses

... 1) WANs generally connect devices that are separated by a broader geographical area than can be served by a LAN. 2) WANs use the services of carriers, such as telephone companies, cable companies, satellite systems, and network providers. 3) WANs use serial connections of various types to provide ac ...
Group Comm
Group Comm

... 4) Optional Response ...
Virtual Private Networking over MPDS
Virtual Private Networking over MPDS

... Some Inmarsat LESOs provide VPN services for their customers. By providing this service at the LESO, data traffic between the MES and the LESO is not part of the VPN. This traffic is secured by the standard mechanisms used within the MPDS network, and means that no extra overhead is introduced by fu ...
network
network

...  So that any two hosts can send packets to each other Resulting network of networks is very complex  Evolution was driven by economics and national policies Let’s take a stepwise approach to describe current Internet structure ...
Emulating an Embedded Firewall Clifford Neuman, Deepak Dayama, and Arun Viswanathan
Emulating an Embedded Firewall Clifford Neuman, Deepak Dayama, and Arun Viswanathan

... emulations, nor do we have data from the NIC card implementations, but we need to look at the expected performance of the emulated EFW under varying circumstances of load and number of policies rules being implemented. Understanding such differences is important because delays in communicating netwo ...
Massive Distributed and Parallel Log Analysis For Organizational
Massive Distributed and Parallel Log Analysis For Organizational

... ii) The deployment cloud environment provides a comprehensive interface to manage its computation resources. The first assumption is reasonable in terms of the trend to outsource services to the cloud from traditional IT department of companies and organizations. For example, [7] and [13] reported t ...
Cisco IOS Firewall
Cisco IOS Firewall

... Layered Defense Features  Access control is enforced on traffic entering and exiting the buffer network to all security zones by: Classic routers ...
Discovery_Routing_Switching_Chapter2
Discovery_Routing_Switching_Chapter2

...  1. Begin by conducting an Internet search using the phrase "NAS versus SAN". This will result in a list of resources that detail the meaning of both of these terms as well as examples.  2. Define the storage need for XYZ Corporation. You will need to define the need in order to select from the tw ...
Infrastructure Attack Vectors and Mitigation
Infrastructure Attack Vectors and Mitigation

... – IP (v4/v6): protocol to exchange data between endpoints – DNS: resolving human readable names to IP addresses – routing: inter-domain routing between networks, making IP addresses globally reachable ...
PPT Version
PPT Version

... 5. If the octets starting with T are 0x0001 (an indication of authentication data), T= T+13 plus the lengths of the client identifier and the authentication value, assuming T is the start of authentication data. 6. If E-T < 40, the packet is not Teredo. 7. If the octets starting with T are 0x0000 (a ...
The Internet Motion Sensor: A Distributed Blackhole
The Internet Motion Sensor: A Distributed Blackhole

... As an illustration, consider the Blaster worm [16]. The infection and transmission method used by Blaster is relatively complicated compared to a single-packet worm like Slammer [12]. A condensed diagram of the transactions involved in a Blaster infection is illustrated in Figure 4(a). The Blaster w ...
Document
Document

... – Anyone can transmit • Received by other devices in range • Interferes with other nearby transmissions – Jamming may prevent correct reception ...
Cyber Security
Cyber Security

... Digital Security Services Division ...
ppt
ppt

... • Support many-to-many communication. • Example applications: multi-point data distribution, multi-party teleconferencing. ...
Getting the NAC of Network Security
Getting the NAC of Network Security

... – Auto network discovery, link monitoring, and notifications supports SNMP, ICMP, DNS and TCP monitoring; http://tinyurl.com/mulky Soft Perfect Network Scanner – A multi-threaded IP, SNMP and NetBIOS scanner. Very easy to use; ...
Web URL Filter
Web URL Filter

... • AntiVirus, AntiSpam, Webfilter increase productivity and filter threats before they even enter my network. • IPS looks inside allowed traffic and searches for Virus patterns or blocks specific applications (Peer-To-Peer, Chat etc.) © 2010 Cisco and/or its affiliates. All rights reserved. ...
Slide 1
Slide 1

...  Sharing networked hardware can reduce costs  Sharing networked hardware can provide access to a wide range of services and specialized peripheral devices ...
PowerPoint-09
PowerPoint-09

... • authentication framework—The IEEE 802.1X standard provides a framework for many authentication types and the link layer • Extensible Authentication Protocol (EAP) Cisco authentication algorithm—The EAP Cisco Wireless authentication type, also called Cisco LEAP supports centralized, user-based auth ...
Network Support for IP Traceback - David Wetherall
Network Support for IP Traceback - David Wetherall

... between the years of 1989 and 1995, the number of such attacks reported to the Computer Emergency Response Team (CERT) increased by 50% per year [26]. More recently, a 1999 CSFFBI survey reports that 32% of respondents detected denial-of-service attacks directed against their sites [16]. Even more w ...
Cisco Structured Wireless-Aware Network
Cisco Structured Wireless-Aware Network

... • No cost licensing ...
- IEEE Mentor
- IEEE Mentor

... Joe is owner of a recent smartphone model with both cellular and Wi-Fi interfaces build in. He is not only an extensive user of web-based social applications, streaming video and his company’s VPN access but also uses his cellular provider’s special phone book application and mail service. The speci ...
Cisco Catalyst 2950-24 and 2950-12 Switches
Cisco Catalyst 2950-24 and 2950-12 Switches

... fixed-configuration, managed 10/100 switches providing user connectivity for small to mid-sized networks. These wire-speed desktop switches offer Cisco IOS® functionality for basic data, video and voice services at the edge of the network. Embedded in the Catalyst 2950 Series is the Cisco Cluster Ma ...
Wireless LANs - College of DuPage
Wireless LANs - College of DuPage

... moving a person within a building, reorganizing a lab, or moving to temporary locations or project sites. –Another example is when a company moves into a new building that does not have any wired infrastructure. In this case, the savings resulting from using WLANs can be even more noticeable, becaus ...
Security and DoS
Security and DoS

... Most of such attacks operate by building a large “army” of zombies which are spread all over the Internet. This army is composed of compromised Internet hosts which have a “zombie” or a Trojan3 program installed on them. In order to create such a collection of hosts a way must be found to break int ...
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Computer security

Computer security, also known as cybersecurity or IT security, is the protection of information systems from theft or damage to the hardware, the software, and to the information on them, as well as from disruption or misdirection of the services they provide. It includes controlling physical access to the hardware, as well as protecting against harm that may come via network access, data and code injection, and due to malpractice by operators, whether intentional, accidental, or due to them being tricked into deviating from secure procedures.The field is of growing importance due to the increasing reliance of computer systems in most societies. Computer systems now include a very wide variety of ""smart"" devices, including smartphones, televisions and tiny devices as part of the Internet of Things - and networks include not only the Internet and private data networks, but also Bluetooth, Wi-Fi and other wireless networks.Computer security covers all the processes and mechanisms by which digital equipment, information and services are protected from unintended or unauthorized access, change or destruction and the process of applying security measures to ensure confidentiality, integrity, and availability of data both in transit and at rest.
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