NO.770 Packet Filtering Firewalls can also enable access for:
Explanation/Reference:
Explanation:
Packet filtering is a firewall technology that makes access decisions based upon network-level protocol header values. The filters can make access decisions based upon the following basic criteria:
Source and destination port numbers (such as an application port or a service number)
Protocol types
Source and destination IP addresses
Inbound and outbound traffic direction
Incorrect Answers:
B: Only authorized ports or service numbers, not unauthorized, would be granted access through the firewall.
C: Packet Filtering Firewalls do not grant access through ex-service numbers. They use service numbers.
D: Packet Filtering Firewalls do not grant access through service integers. A service has a number, not an integer.
References:
Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, New York, 2013, p. 630
NO.772 Under intellectual property law what would you call information that companies keep secret to give them an advantage over their competitors?
edison bulb PATENTS provide rights for up to 20 years for inventions in three broad categories: Drawing of a machine clog. Utility patents protect useful processes, machines, articles of manufacture, and compositions of matter. Some examples: fiber optics, computer hardware, medications. Drawing of a light bulb. Design patents guard the unauthorized use of new, original, and ornamental designs for articles of manufacture. The look of an athletic shoe, a bicycle helmet, the Star Wars characters are all protected by design patents. Drawing of a plant. Plant patents are the way we protect invented or discovered, asexually reproduced plant varieties. Hybrid tea roses, Silver Queen corn, Better Boy tomatoes are all types of plant patents. Drawing of Registered Trademark symbol a capital R inside a circle. TRADEMARKS protect words, names, symbols, sounds, or colors that distinguish goods and services. Trademarks, unlike patents, can be renewed forever as long as they are being used in business. The roar of the MGM lion, the pink of the Owens-Corning insulation, and the shape of a Coca-Cola bottle are familiar trademarks. The Copyright Symbol, a Capital C inside a circle. COPYRIGHTS protect works of authorship, such as writings, music, and works of art that have been tangibly expressed. The Library of Congress registers copyrights which last the life of the author plus 50 years. Gone With The Wind (the book and the film), Beatles recordings, and video games are all works that are copyrighted. Drawing of 3 Molecules attached by small rods. TRADE SECRETS are information that companies keep secret to give them an advantage over their competitors. The formula for Coca-Cola is the most famous trade secret. REFERENCE: United States Patent and Trademark Office at: http://www.uspto.gov/web/offices/ac/ahrpa/opa/museum/1intell.htm and Source: HARRIS, Shon, All-In-One CISSP Certification Exam Guide, McGraw-Hill/Osborne, 2001, Page 664.
NO.773 How can an individual/person best be identified or authenticated to prevent local masquerading attacks?
The only way to be truly positive in authenticating identity for access is to base the authentication on the physical attributes of the persons themselves (i.e., biometric identification). Physical attributes cannot be shared, borrowed, or duplicated. They ensure that you do identify the person, however they are not perfect and they would have to be supplemented by another factor. Some people are getting thrown off by the term Masquarade. In general, a masquerade is a disguise. In terms of communications security issues, a masquerade is a type of attack where the attacker pretends to be an authorized user of a system in order to gain access to it or to gain greater privileges than they are authorized for. A masquerade may be attempted through the use of stolen logon IDs and passwords, through finding security gaps in programs, or through bypassing the authentication mechanism. Spoofing is another term used to describe this type of attack as well. A UserId only provides for identification. A password is a weak authentication mechanism since passwords can be disclosed, shared, written down, and more. A smart card can be stolen and its corresponding PIN code can be guessed by an intruder. A smartcard can be borrowed by a friend of yours and you would have no clue as to who is really logging in using that smart card. Any form of two-factor authentication not involving biometrics cannot be as reliable as a biometric system to identify the person. See an extract below from the HISM book volume 1 Biometric identifying verification systems control people. If the person with the correct hand, eye, face, signature, or voice is not present, the identification and verification cannot take place and the desired action (i.e., portal passage, data, or resource access) does not occur. As has been demonstrated many times, adversaries and criminals obtain and successfully use access cards, even those that require the addition of a PIN. This is because these systems control only pieces of plastic (and sometimes information), rather than people. Real asset and resource protection can only be accomplished by people, not cards and information, because unauthorized persons can (and do) obtain the cards and information. Further, life-cycle costs are significantly reduced because no card or PIN administration system or personnel are required. The authorized person does not lose physical characteristics (i.e., hands, face, eyes, signature, or voice), but cards and PINs are continuously lost, stolen, or forgotten. This is why card access systems require systems and people to administer, control, record, and issue (new) cards and PINs. Moreover, the cards are an expensive and recurring cost. NOTE FROM CLEMENT: This question has been generating lots of interest. The keyword in the question is: Individual (the person) and also the authenticated portion as well. I totally agree with you that Two Factors or Strong Authentication would be the strongest means of authentication. However the question is not asking what is the strongest mean of authentication, it is asking what is the best way to identify the user (individual) behind the technology. When answering questions do not make assumptions to facts not presented in the question or answers. Nothing can beat Biometrics in such case. You cannot lend your fingerprint and pin to someone else, you cannot borrow one of my eye balls to defeat the Iris or Retina scan. This is why it is the best method to authenticate the user. I think the reference is playing with semantics and that makes it a bit confusing. I have improved the question to make it a lot clearer and I have also improve the explanations attached with the question. The reference mentioned above refers to authenticating the identity for access. So the distinction is being made that there is identity and there is authentication. In the case of physical security the enrollment process is where the identity of the user would be validated and then the biometrics features provided by the user would authenticate the user on a one to one matching basis (for authentication) with the reference contained in the database of biometrics templates. In the case of system access, the user might have to provide a username, a pin, a passphrase, a smart card, and then provide his biometric attributes. Biometric can also be used for Identification purpose where you do a one to many match. You take a facial scan of someone within an airport and you attempt to match it with a large database of known criminal and terrorists. This is how you could use biometric for Identification. There are always THREE means of authentication, they are: Something you know (Type 1) Something you have (Type 2) Something you are (Type 3) Reference(s) used for this question: TIPTON, Harold F. & KRAUSE, Micki, Information Security Management Handbook, 4th edition (volume 1) , 2000, CRC Press, Chapter 1, Biometric Identification (page 7). and Search Security at http://searchsecurity.techtarget.com/definition/masquerade