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Free 312-38 Exam Braindumps (page: 43)

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PDF with 617 Questions

Which of the following is a tool that runs on the Windows OS and analyzes iptables log messages to detect port scans and other suspicious traffic?

  1. PSAD
  2. Hping
  3. NetRanger
  4. Nmap

Answer(s): A

Explanation:

PSAD is a tool that runs on the Windows OS and analyzes iptables log messages to detect port scans and other suspicious traffic. It includes many signatures from the IDS to detect probes for various backdoor programs such as EvilFTP, GirlFriend, SubSeven, DDoS tools (mstream, shaft), and advanced port scans (FIN, NULL, XMAS). If it is combined with fwsnort and the Netfilter string match extension, it detects most of the attacks described in the Snort rule set that involve application layer data.
Answer option C is incorrect. NetRanger is the complete network configuration and information toolkit that includes the following tools: Ping tool, Trace Route tool, Host Lookup tool, Internet time synchronizer, Whois tool, Finger Unix hosts tool, Host and port scanning tool, check multiple POP3 mail accounts tool, manage dialup connections tool, Quote of the day tool, and monitor Network Settings tool. These tools are integrated in order to use an application interface with full online help. NetRanger is designed for both new and experienced users. This tool is used to help diagnose network problems and to get information about users, hosts, and networks on the Internet or on a user computer network. NetRanger uses multi-threaded and multi-connection technologies in order to be very fast and efficient.
Answer option D is incorrect. Nmap is a free open-source utility for network exploration and security auditing. It is used to discover computers and services on a computer network, thus creating a "map" of the network. Just like many simple port scanners, Nmap is capable of discovering passive services. In addition, Nmap may be able to determine various details about the remote computers. These include operating system, device type, uptime, software product used to run a service, exact version number of that product, presence of some firewall techniques and, on a local area network, even vendor of the remote network card. Nmap runs on Linux, Microsoft Windows, etc.



FILL BLANK
Fill in the blank with the appropriate term.
A_____________ is a physical or logical subnetwork that contains and exposes external services of an organization to a larger network.

  1. demilitarized zone

Answer(s): A

Explanation:

A demilitarized zone (DMZ) is a physical or logical subnetwork that contains and exposes external services of an organization to a larger network, usually the Internet. The purpose of a DMZ is to add an additional layer of security to an organization's Local Area Network (LAN); an external attacker only has access to equipment in the DMZ, rather than the whole of the network. Hosts in the DMZ have limited connectivity to specific hosts in the internal network, though communication with other hosts in the DMZ and to the external network is allowed. This allows hosts in the DMZ to provide services to both the internal and external networks, while an intervening firewall controls the traffic between the DMZ servers and the internal network clients. In a DMZ configuration, most computers on the LAN run behind a firewall connected to a public network such as the Internet.



Which of the following statements are true about security risks? Each correct answer represents a complete solution. (Choose three.)

  1. They are considered an indicator of threats coupled with vulnerability.
  2. They can be removed completely by taking proper actions.
  3. They can be analyzed and measured by the risk analysis process.
  4. They can be mitigated by reviewing and taking responsible actions based on possible risks.

Answer(s): A,C,D

Explanation:

In information security, security risks are considered an indicator of threats coupled with vulnerability. In other words, security risk is a probabilistic function of a given threat agent exercising a particular vulnerability and the impact of that risk on the organization. Security risks can be mitigated by reviewing and taking responsible actions based on possible risks. These risks can be analyzed and measured by the risk analysis process.
Answer option B is incorrect. Security risks can never be removed completely but can be mitigated by taking proper actions.



Which of the following statements are TRUE about Demilitarized zone (DMZ)? Each correct answer represents a complete solution. Choose all that apply.

  1. The purpose of a DMZ is to add an additional layer of security to the Local Area Network of an organization.
  2. Hosts in the DMZ have full connectivity to specific hosts in the internal network.
  3. Demilitarized zone is a physical or logical sub-network that contains and exposes external services of an organization to a larger un-trusted network.
  4. In a DMZ configuration, most computers on the LAN run behind a firewall connected to a public network like the Internet.

Answer(s): A,C,D

Explanation:

A demilitarized zone (DMZ) is a physical or logical subnetwork that contains and exposes external services of an organization to a larger network, usually the Internet. The purpose of a DMZ is to add an additional layer of security to an organization's Local Area Network (LAN); an external attacker only has access to equipment in the DMZ, rather than the whole of the network. Hosts in the DMZ have limited connectivity to specific hosts in the internal network, though communication with other hosts in the DMZ and to the external network is allowed. This allows hosts in the DMZ to provide services to both the internal and external networks, while an intervening firewall controls the traffic between the DMZ servers and the internal network clients. In a DMZ configuration, most computers on the LAN run behind a firewall connected to a public network such as the Internet.






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