a network security exams in a nutshell

... source and waits for a confirmation including that... destination address   Security parameters index (SPI) Security protocol identifier Security Association Database (SAD)   Security ... signatures  Attackers may analyze traffic and modify headers  Transport Layer  Provides security protections for TCP packets  No need to modify any application programs  Attackers may analyze traffic ... IPsec Header IPsec Header Authentication Header (AH) Encapsulated Security Payload (ESP) Authentication and Encryption use separate SAs J Wang Computer Network Security Theory and Practice

Ngày tải lên: 06/03/2014, 16:20

... J. Wang. Computer Network Security Theory and Practice. Springer 2009 Chapter 5 Network Security Protocols in Practice Part II J. Wang. Computer Network Security Theory and Practice. Springer ... obtain service J Wang Computer Network Security Theory and Practice Springer 2009 Kerberos Notations J Wang Computer Network Security Theory and Practice Springer 2009 Single-Realm ... Placements in Networks 5.2 Public-Key Infrastructure 5.3 IPsec: A Security Protocol at the Network Layer 5.4 SSL/TLS: Security Protocols at the Transport Layer 5.5 PGP and S/MIME: Email

Ngày tải lên: 06/03/2014, 16:20

... Åström Arcada Polytechnic, Espoo, Finland laura.bergstrom@arcada.fi kaj.grahn@arcada.fi krister.karlstrom@arcada.fi goran.pulkkis@arcada.fi peik.astrom@arcada.fi Executive Summary This article ... reliable authentication integrity of information content confidentiality nonrepudiation in data processing, in data communication, and in the storing of data (Stallings, 2002). Reliable authentication ... goal was to use white as the main color Calm and non-disputable color combinations were chosen To make the reading and concentrating eas- 209 Teaching Network Security in a Virtual

Ngày tải lên: 22/03/2014, 15:21

... organizations that do not want any delay in restoration of data after a disaster strikes An alternate site is a temporary facility away from the original... measuring and analyzing the physical ... the following two components: Authentication Header (AH) The AH secures data or payload by signing each IP packet to maintain its authenticity and integrity. Encapsulating Security Payload (ESP) ... configured as primary and the other as secondary In case the primary adapter fails, the secondary adapter takes over Adapter load balancing This solution not only provides fault tolerance but also

Ngày tải lên: 09/08/2014, 07:20

... available network bandwidth. Data backups • A full backup backs up all the data in a single backup job. • An incremental backup backs up the data that has changed after the last full or incremental backup ... was taken. • A differential backup backs up the data that has changed since the last full backup. • A copy backup copies all the data on the system. Hot and cold spares • Hot spares are installed ... resolved MAC addresses are stored locally in the ARP cache. • Dynamic entries are created automatically in the ARP cache. • Static entries are added manually using the arp –s command. netstat • This

Ngày tải lên: 09/08/2014, 07:20

... replaced with newer cards Smart cards Smart cards usually store a small... username as administrator and a blank password for the administrator account Even now some applications allow administrators ... database servers include Microsoft’s SQL Server and Oracle These database servers pose a challenging task for administrators in terms of hardening these servers and maintaining their security Database ... usually requires separate database administrators who manage access control, authentication, and auditing of these services These administrators must ensure the security of data stored in the databases,

Ngày tải lên: 09/08/2014, 07:20

... Hashing algorithms • Hashing algorithms are used for integrity and authentication of data. • A hashing algorithm, or a hash function, creates a unique digital fingerprint from data known as the ... antenna wires, 275 antistatic bag, 256 antistatic straps and pads, 264 antistatic table mats, 264 antivirus software, 306 AP (Access Point), 131 APIPA... topology, 429 advantages, 429 disadvantages, ... be educated on maintaining individual and organizational privacy. • Organizations reserve the right to inspect personal data stored on company computers. • Organizations can also monitor an end

Ngày tải lên: 09/08/2014, 07:20

... existing data or collecting additional data without under- typically relies on the assumption that the training and testing data standing the inherent limitations of the available training ... non-causal In the case of real-world network data collection, data such as associations in the training dataset [44] These biases can lead to a traffic-specific aspects are extracted directly (and ... Molnar Interpretable machine learning Lulu com, 2020 Q Zhou and D Pezaros Evaluation of machine learning classifiers for zero- [76] A Natekin and A Knoll Gradient boosting machines, a

Ngày tải lên: 06/03/2024, 17:26

... data packets each capable of transmitting 0 to 1023 bytes of data.  Data0  Data1 Data packets have the following format Sync PID Data CRC16 EOP  Handshake Packets There are three type of handshake ... a DATA packet containing the control data to be sent, a stall packet indicating the endpoint has had a error or a NAK packet indicating to the host that the endpoint is working, ... but temporary has no data to send IN DATA x ACK Data Error STALL NAK In Token Error Key OUT DATA x Host Function ACK NAK STALL Data Error Token Packet • Data Packet Handshake Packet OUT:

Ngày tải lên: 13/12/2013, 00:15

... effect of increasing the attack surface available to an adversary an avenue that was taken advantage of in various Internet based attacks This section offers security configuration guidance for ... be re-installed Patch... Knowledge Base article 288358 for more information An additional safeguard can be made by disabling the storage of the LM hash in the local SAM database or Active ... Player, RealPlayer), BIND and Sendmail. UNCLASSIFIED 6 UNCLASSIFIED Know Your Network Developing and maintaining a list of all hardware devices and installed software is important to the security

Ngày tải lên: 14/02/2014, 08:20

... O’Berry Topological analysis of network attack vulnerabity In V Kumar, J Srivastava, and A Lazarevic, editors, Managing Cyber Threats: Issues, Approaches and Challanges, chapter Kluwer Academic Publisher, ... Raj Rajagopalan, Prasad Rao, and Alathurai V Surendran Automatic management of network security policy In DARPA Information Survivability Conference and Exposition (DISCEX II’01), volume 2, Anaheim, ... BIBLIOGRAPHY 116 [7] S Bhatt, A. V Konstantinou, S R Rajagopalan, and Yechiam Yemini Managing security in dynamic networks In 13th USENIX Systems Administration Conference (LISA’99), Seattle, WA, USA,

Ngày tải lên: 05/03/2014, 21:20

... points In [81], authenticated ranging and distance bounding are used to ensure accurate location of a node Because of distance bounding, an attacking node can only increase its claimed distance ... use in TAG The sensors then route data 37 back to the base station according to a routing tree At each point in the tree, data is aggregated according to the routing tree and according to the particular ... them Wagner proposes a mathematical framework for formally evaluating the security for aggregation, allowing them to quantify the robustness of an aggregation operator against malicious data This

Ngày tải lên: 05/03/2014, 21:20

... analyzed, and disseminated among other researchers Astronomical data are almost always saved in some digital... weaker than in A stars, but additional lines appear, and are due to transitions in ... continues in K stars where, in addition, molecular “bands” begin to appear Such bands are actually numerous adjacent absorptions... are almost always observed by detecting and measuring electromagnetic ... when mathematical symbols, rather than numbers, appear on both sides) means some approximation has been made, and in a numerical relation it means an accuracy somewhat worse than ten percent. A “∝”

Ngày tải lên: 05/03/2014, 22:21

... effective clinical nursing instructor are daunting It can be a prodigious undertaking even for individuals with training or degrees in clinical instruction They are continually faced... ... them prepare for clinical teaching, including organizing the clinical experience, developing relationships with the staff in the clinical facilities, making clinical assignments, ... developing clinical rotations, planning and facilitating pre- and postconferences, clinical evaluations, legal issues of clinical education and, of course, handling the student who is in

Ngày tải lên: 06/03/2014, 12:21

... devices analyze traffic and compare each packet to a database of known attack profiles. When attacks are detected, these technologies take action. IDS tools alert your IT staff that an attack has ... These three capabilities make a firewall an indispensable part of your net- work security. • Network- based anti-virus — Installed in the DMZ, network- based anti-virus software compares incoming and outgoing ... to a business process vital to an organization’s success. DEFENDING AGAINST COMMON THREATS AND ATTACKS Figure 6 demonstrates how the layered -security approach protects against common threats and

Ngày tải lên: 14/03/2014, 22:20

... stateful inspection firewalls take actions by only looking at the headers of the data packets An application proxy firewall acts as an intermediate gateway attempting to look not only at the packet ... signals through it, an intruder can tap the wire and read radiated signals through inductance without making physical contact with the cable. An intruder intercepting the signals on a broadband ... one particular application uses a network and contacts the application program running on a remote machine. The presentation layer deals with the translation and/or representation of data at

Ngày tải lên: 14/03/2014, 22:20

... an external cooling pad. A cooling pad lifts the laptop above the table about one inch and has extra fans for cooling the bottom of the laptop. Make sure that the area where a laptop is operated ... servers and mainframe computers. It is extremely stable and reliable and provides several advantages over Microsoft’s Windows operating systems. Different variations of Linux are available as of ... computers. Apple has recently released the Intel version of MAC OS X that can be installed in place of Windows on Intel-based personal computers. The MAC OS has a GUI that looks similar to Windows and...

Ngày tải lên: 25/03/2014, 11:03

... months’ salary • CD burner = two weeks’ salary • Russian outdoor markets: – MS Operating System a few dollars • Hacking: more social approval? – Communal sharing culture Hacker Sites Site Map Main ̇ ... the playing field Criminal Communication • Public Web forums – Many no registration for read access – Meeting place for beginners, fearless criminals – Information sharing and “career building” – ... stack` [ h programming ] n. na many vstavk h as far as possible to korrumpirovat' the stack of the performance by way writing after the end of the automobile of that declared by block in...

Ngày tải lên: 14/03/2014, 20:20

... came in a rectangular shape and with Dual inline package (DIP), with two rows of connection pins on each side. New processors come in Pin Grid Array (PGA) packaging, which is a square shape and ... of installing, configuring, optimizing, and upgrading printers and scanners. • Install and configure printers and scanners: — Power and connect the device using a local or network port — Install ... checking in memory. There are two main mechanisms used for error checking in computer memory. These are explained in the following paragraphs: Parity RAM Parity RAM uses a parity checking mechanism...

Ngày tải lên: 09/08/2014, 07:20

... pushed against heat-sensitive paper called thermochromic paper or thermal paper. Some fax machines (except plain paper faxes) and calculators with printing capability use the thermal printing process. ... full installation installs all mandatory as well as optional components. If you are experienced in installa- tions, you can customize the installation using the custom installation option. Network ... known as the hardware abstraction layer (HAL.DLL). 2. The kernel initializes by creating a registry key known as HKEY_LOCAL_ MACHINE\HARDWARE. This key contains information about the hard- ware...

Ngày tải lên: 09/08/2014, 07:20