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NEW QUESTION: 1
George is performing security analysis for Hammond and Sons LLC. He is testing security vulnerabilities of their wireless network. He plans on remaining as "stealthy" as possible during the scan. Why would a scanner like Nessus is not recommended in this situation?
A. Nessus cannot perform wireless testing
B. There are no ways of performing a "stealthy" wireless scan
C. Nessus is not a network scanner
D. Nessus is too loud
Answer: D

NEW QUESTION: 2

A. Option A
B. Option E
C. Option C
D. Option D
E. Option B
Answer: B,E
Explanation:
http://www.cisco.com/en/US/prod/collateral/vpndevc/ps6032/ps6094/ps6120/prod_white_p aper0900aecd8058ec85.html Adding Intrusion Prevention Gartner's definition of a next-generation firewall is one that combines firewall filtering and intrusion prevention systems (IPSs). Like firewalls, IPSs filter packets in real time. But instead of filtering based on user profiles and application policies, they scan for known malicious patterns in incoming code, called signatures. These signatures indicate the presence of malware, such as worms, Trojan horses, and spyware.
Malware can overwhelm server and network resources and cause denial of service (DoS) to internal employees, external Web users, or both. By filtering for known malicious signatures, IPSs add an extra layer of security to firewall capabilities; once the malware is detected by the IPS, the system will block it from the network.
Firewalls provide the first line of defense in any organization's network security infrastructure. They do so by matching corporate policies about users' network access rights to the connection information surrounding each access attempt. If the variables don't match, the firewall blocks the access connection. If the variables do match, the firewall allows the acceptable traffic to flow through the network.
In this way, the firewall forms the basic building block of an organization's network security architecture. It pays to use one with superior performance to maximize network uptime for business-critical operations. The reason is that the rapid addition of voice, video, and collaborative traffic to corporate networks is driving the need for firewall engines that operate at very high speeds and that also support application-level inspection. While standard Layer 2 and Layer 3 firewalls prevent unauthorized access to internal and external networks, firewalls enhanced with application-level inspection examine, identify, and verify application types at Layer 7 to make sure unwanted or misbehaving application traffic doesn't join the network.
With these capabilities, the firewall can enforce endpoint user registration and authentication and provide administrative control over the use of multimedia applications.

NEW QUESTION: 3
When first analyzing an intrusion that has just been detected and confirming that it is a true positive, which of the following actions should be done as a first step if you wish to prosecute the attacker in court?
A. Back up the compromised systems.
B. Capture and record system information.
C. Identify the attacks used to gain access.
D. Isolate the compromised systems.
Answer: B
Explanation:
When an intrusion has been detected and confirmed, if you wish to prosecute the attacker in court, the following actions should be performed in the following order:
Capture and record system information and evidence that may be lost, modified, or not captured during the execution of a backup procedure. Start with the most volative memory areas first. Make at least two full backups of the compromised systems, using hardware-write-protectable or write-once media. A first backup may be used to re-install the compromised system for further analysis and the second one should be preserved in a secure location to preserve the chain of custody of evidence.
Isolate the compromised systems.
Search for signs of intrusions on other systems.
Examine logs in order to gather more information and better identify other systems to which the
intruder might have gained access.
Search through logs of compromised systems for information that would reveal the kind of attacks
used to gain access.
Identify what the intruder did, for example by analyzing various log files, comparing checksums of
known, trusted files to those on the compromised machine and by using other intrusion analysis
tools.
Regardless of the exact steps being followed, if you wish to prosecute in a court of law it means
you MUST capture the evidence as a first step before it could be lost or contaminated. You always
start with the most volatile evidence first.
NOTE:
I have received feedback saying that some other steps may be done such as Disconnecting the
system from the network or shutting down the system. This is true. However, those are not
choices listed within the 4 choices attached to this question, you MUST avoid changing the
question. You must stick to the four choices presented and pick which one is the best out of the
four presented.
In real life, Forensic is not always black or white. There are many shades of grey. In real life you
would have to consult your system policy (if you have one), get your Computer Incident team
involved, and talk to your forensic expert and then decide what is the best course of action.
Reference(s) Used for this question:
http://www.newyorkcomputerforensics.com/learn/forensics_process.php
and
ALLEN, Julia H., The CERT Guide to System and Network Security Practices, Addison-Wesley,
2001, Chapter 7: Responding to Intrusions (pages 273-277).