tcp and udp use port numbers greater than 1023
CISSP Study Notes From CISSP Prep Guide
Ngày tải lên :
18/10/2015, 23:17
... is maintained NOTE: TCP and UDP use port numbers greater than 1023 UDP n Best effort n Doesn’t care about sequence order 21 n n Connectionless Less overhead and faster than TCP Internet Layer ... creases, ridges and grooves throughout it that are unique to a specific person n Hand Geometry: The shape of a person’s hand (the length and width of the hand and fingers) measures hand geometry ... SOCKS, PPTP and SSH n SOCKS is not traditional VPN protocol but is robust and operates at Application Layer n PTP implemented in Win95 and NT n Multiprotocol and uses PAP and CHAP user authentication...
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Cryptography and network security principles and practice, 5th edition
Ngày tải lên :
07/12/2013, 11:53
... about and understanding this important standard The chapter on AES has been revised and expanded, with additional illustrations and a detailed example, to clarify the presentation Examples and ... been expanded and the illustrations redrawn for greater clarity • Pseudorandom number generation and pseudorandom functions (revised): The treatment of this important topic has been expanded, ... advised government agencies, computer and software vendors, and major users on the design, selection, and use of networking software and products He created and maintains the Computer Science Student...
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Tài liệu COMPUTER AND NETWORK SECURITY IN HIGHER EDUCATION doc
Ngày tải lên :
14/02/2014, 16:20
... very important when examining the cause of a security compromise and looking for other computers that might be affected Clear policies and procedures regarding the capture, retention, and use of ... inexpensive and, hence, it is worth the cost of replacing older hubs Step 2: Embrace and Implement the Concept of Defense and Use Multiple Firewalls Within Your Network Commercial and Linux-based ... email is port 25, and so on) (Postel et al., 2003) At a small institution it may be possible to examine the machines individually and get this information, but most campuses will want to use an...
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Tài liệu Cryptography and Network Security Principles and Practices, Fourth Edition ppt
Ngày tải lên :
18/02/2014, 08:20
... threat of and countermeasures for intruders and viruses, and the use of firewalls and trusted systems In addition, the book includes an extensive glossary, a list of frequently used acronyms, and a ... Recommended Reading and Web Sites 644 Section 20.5 Key Terms, Review Questions, and Problems 645 Appendix A Standards and Standards-Setting Organizations 647 Section A.1 The Importance of Standards 648 ... Institute of Standards and Technology (NIST) A ppendix A discusses the standards-making process and lists the standards cited in this book 16 / 526 Cryptography and Network Security Principles and Practices,...
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Procedure 1610 PR.01 Systems and Network Security potx
Ngày tải lên :
05/03/2014, 23:20
... Systems and Network Security Know your IT support providers and their role in information security All faculty, staff, and students on campus have access to IT support staff Know who they are and ... anti-virus and anti-spyware tools and keep them up to date Anti-virus and anti-spyware software is available at no fee to all Yale faculty, staff and students Links: ITS 10 Use secure file transfer and ... locations from which you use email Use SPAM and virus filters provided by University email servers: Links: ITS 06/10/2011 Page of Procedure 1610 PR.01 - Systems and Network Security Use up-to-date protections...
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Computer and Network Security: Questions Everyone Should Ask docx
Ngày tải lên :
05/03/2014, 23:20
... function at the university involves use of information technology We use computers to store and retrieve records and we conduct online transactions over building, campus and Internet network connections ... passwords? How often? • Do we educate end users about good password choices? (e.g avoid family names and dates, use a password longer than characters, don’t use words found in dictionaries, include ... spyware detection software on our servers and on end user computers? Page Computer and Network Security: Questions Everyone Should Ask • How are servers and end-user computers given new antivirus definitions?...
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Cryptography and Network Security docx
Ngày tải lên :
05/03/2014, 23:20
... Permutation, 16 rounds of identical operation, inverse permutation Li1 Each round uses a different 48bit key Ki (from K) and a Ri1 Li1 Ri1 combiner function F F Ki + Fundamentals of Wired and Wireless Networks, Kameswari Chebrolu and Bhaskaran Raman, 0913 May 2005 ... finding large (e.g 100 digit) prime numbers is easy, but factoring the product of two such numbers appears computationally infeasible Choose very large prime numbers P and Q – – ● N=PxQ N is public; ... ● Codes versus ciphering – Codes are stronger, and also achieve data compression Fundamentals of Wired and Wireless Networks, Kameswari Chebrolu and Bhaskaran Raman, 0913 May 2005 Some Popular...
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Cryptography and Network Security Chapter 1 doc
Ngày tải lên :
06/03/2014, 16:20
... traditionally provided by physical and administrative mechanisms computer use requires automated tools to protect files and other stored information use of networks and communications links requires ... information (keys) used by the algorithm develop methods to distribute and share the secret information specify a protocol enabling the principals to use the transformation and secret information ... gatekeeper functions to identify users implement security controls to ensure only authorised users access designated information or resources trusted computer systems may be useful to help implement...
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Cryptography and Network Security Chapter 2 pdf
Ngày tải lên :
06/03/2014, 16:20
... cryptanalysis harder with more alphabets to guess and flatter frequency distribution use a key to select which alphabet is used for each letter of the message use each alphabet in turn repeat from start ... needed for calculations is greater than age of universe), the cipher cannot be broken Brute Force Search always possible to simply try every key most basic attack, proportional to key size assume ... count relative letter frequencies (see text) guess P & Z are e and t guess ZW is th and hence ZWP is the proceeding with trial and error finally get: it was disclosed yesterday that several informal...
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Cryptography and Network Security Chapter 6 pptx
Ngày tải lên :
06/03/2014, 16:20
... to use multiple encryption with DES implementations Triple-DES is the chosen form Double-DES? could use DES encrypts on each block C = EK2(EK1(P)) issue of reduction to single stage and ... “meet-in-the-middle” attack works whenever use a cipher twice since X = EK1(P) = DK2(C) attack by encrypting P with all keys and store then decrypt C with keys and match X value can show takes O(256) ... use Initial Vector (IV) to start process Ci = DESK1(Pi XOR Ci-1) C-1 = IV uses: bulk data encryption, authentication Cipher Block Chaining (CBC) Message Padding at end of message must handle...
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Cryptography and Network Security Chapter 7 pptx
Ngày tải lên :
06/03/2014, 16:20
... greater security use of automatic key distribution on behalf of users, but must trust system use of decentralized key distribution controlling key usage Random Numbers many uses of random numbers ... algorithmic techniques to create “random numbers although are not truly random can pass many tests of “randomness” known as “pseudorandom numbers created by “Pseudorandom Number Generators (PRNGs)” ... very large numbers must be used too slow for cipher use, good for key generation Natural Random Noise best source is natural randomness in real world find a regular but random event and monitor...
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Cryptography and Network Security Chapter 8 doc
Ngày tải lên :
06/03/2014, 16:20
... Mathematical Magpie, Clifton Fadiman Prime Numbers prime numbers only have divisors of and self they cannot be written as a product of other numbers note: is prime, but is generally ... Relatively Prime Numbers & GCD two numbers a, b are relatively prime if have no common divisors apart from eg & 15 are relatively prime since factors of are 1,2,4,8 and of 15 are 1,3,5,15 and is ... prime numbers traditionally sieve using trial division alternatively can use statistical primality tests based on properties of primes ie divide by all numbers (primes) in turn less than...
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Cryptography and Network Security Chapter 9 doc
Ngày tải lên :
06/03/2014, 16:20
... involves the use of two keys: a public-key, which may be known by anybody, and can be used to encrypt messages, and verify signatures a private-key, known only to the recipient, used to decrypt ... Public Key Cryptography and RSA Every Egyptian received two names, which were known respectively as the true name and the good name, or the great name and the little name; and while the good or ... times faster than doing directly only owner of private key who knows values of p & q can use this technique RSA Key Generation users of RSA must: determine two primes at random - p, q...
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CIS 551 / TCOM 401 Computer and Network Security doc
Ngày tải lên :
14/03/2014, 20:20
... discussion: – Only those users who are permitted to use the system can – The system protects privacy/secrecy/confidentiality/anonymity – The system can't be abused (Is only used for its designed ... is it valuable? – Information may be important only to one person (e.g private e-mail or passwords) – Information may be important because it is accurate and reliable (e.g bank’s accounting information) ... Practice Defense in Depth • Layers of security are harder to break than a single defense • Example: Use firewalls, and virus scanners, and encrypt traffic even if it's behind firewall 1/9/07 CIS/TCOM...
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Cryptography and Network Security potx
Ngày tải lên :
14/03/2014, 20:20
... and Network Security Analysis ! Difficult to use frequency analysis ! But vulnerable to known-plaintext attack CS595-Cryptography and Network Security Polyalphabetic Substitution ! Use more than ... the security of data processing and transferring ! Security " Detect, mechanism prevent and recover from a security attack CS595-Cryptography and Network Security Important Features of Security ... is used, or Polyalphabetic:where several substitutions/ transpositions are used Product cipher: " several ciphers concatenated together CS595-Cryptography and Network Security Encryption and...
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The CERT® Guide to System and Network Security Practices pdf
Ngày tải lên :
14/03/2014, 22:20
... case System and network administrators typically have insufficient time, knowledge, and skill to address the wide range of demands required to keep today’s complex systems and networks up and running ... breaking into systems Use of automated tools and exploit scripts was the exception rather than the rule By the year 2000, due to the widespread and easy availability of intrusion tools and exploit THE ... and protects its information and computing resources to achieve security objectives Security policies and procedures that are documented, well known, and visibly enforced establish expected user...
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Cryptography and Network Security: Overview potx
Ngày tải lên :
14/03/2014, 22:20
... http://www.wireshark.org/download.html Use ftp client to download in binary mode (do not use browser) b Advanced Port Scanner, network port scanner, http://www.scanwith.com/Advanced _Port_ Scanner_download.htm ... http://www.solarwinds.com/products/lansurveyor/ Use advanced port scanner to scan one to three hosts on your local net (e.g., CSE571XPS and CSE571XPC2 in the security lab) to find their open ports Use network surveyor ... “Cryptography and Network Security: Principles and Practice,” 5th Ed, 2011 Washington University in St Louis CSE571S 1-2 ©2011 Raj Jain Standards Organizations National Institute of Standards & Technology...
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Cryptography and Network Security Chapter 10 pptx
Ngày tải lên :
15/03/2014, 17:20
... users could create random private/public D-H keys each time they communicate users could create a known private/public D-H key and publish in a directory, then consulted and used to securely ... (RSA, D-H) use either integer or polynomial arithmetic with very large numbers/ polynomials imposes a significant load in storing and processing keys and messages an alternative is to use elliptic ... key and their identity B generates a session key K sends it to A encrypted using the supplied public key A decrypts the session key and both use problem is that an opponent can intercept and...
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Cryptography and Network Security Chapter 13 pot
Ngày tải lên :
15/03/2014, 17:20
... Creation to sign a message M the sender: generates a random signature key k, k
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