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Q391. Neil notices that a single address is generating traffic from its port 500 to port 500 of several other machines on the network. This scan is eating up most of the network bandwidth and Neil is concerned. As a security professional, what would you infer from this scan?
A. It is a network fault and the originating machine is in a network loop
B. It is a worm that is malfunctioning or hardcoded to scan on port 500
C. The attacker is trying to detect machines on the network which have SSL enabled
D. The attacker is trying to determine the type of VPN implementation and checking for IPSec
Answer: D
Explanation: Port 500 is used by IKE (Internet Key Exchange). This is typically used for IPSEC-based VPN software, such as Freeswan, PGPnet, and various vendors of in-a-box VPN solutions such as Cisco. IKE is used to set up the session keys. The actual session is usually sent with ESP (Encapsulated Security Payload) packets, IP protocol 50 (but some in-a-box VPN's such as Cisco are capable of negotiating to send the encrypted tunnel over a UDP channel, which is useful for use across firewalls that block IP protocols other than TCP or UDP).
Q392. Exhibit:
Given the following extract from the snort log on a honeypot, what service is being exploited? :
A. FTP
B. SSH
C. Telnet
D. SMTP
Answer: A
Explanation: The connection is done to 172.16.1.104:21.
Q393. NSLookup is a good tool to use to gain additional information about a target network. What does the following command accomplish?
nslookup
> server <ipaddress>
> set type =any
> ls -d <target.com>
A. Enables DNS spoofing
B. Loads bogus entries into the DNS table
C. Verifies zone security
D. Performs a zone transfer
E. Resets the DNS cache
Answer: D
Explanation: If DNS has not been properly secured, the command sequence displayed above will perform a zone transfer.
Q394. Peter is a Linux network admin. As a knowledgeable security consultant, he turns to you to look for help on a firewall. He wants to use Linux as his firewall and use the latest freely available version that is offered. What do you recommend?
Select the best answer.
A. Ipchains
B. Iptables
C. Checkpoint FW for Linux
D. Ipfwadm
Answer: B
Explanation:
Ipchains was improved over ipfwadm with its chaining mechanism so that it can have multiple rulesets. However, it isn't the latest version of a free Linux firewall. Iptables replaced ipchains and is the latest of the free Linux firewall tools. Any Checkpoint firewall is not going to meet Jason's desire to have a free firewall. Ipfwadm is used to build Linux firewall rules prior to 2.2.0. It is a outdated version.
Q395. Web servers often contain directories that do not need to be indexed. You create a text file with search engine indexing restrictions and place it on the root directory of the Web Server.
User-agent: * Disallow: /images/ Disallow: /banners/ Disallow: /Forms/ Disallow: /Dictionary/ Disallow: /_borders/ Disallow: /_fpclass/ Disallow: /_overlay/ Disallow: /_private/ Disallow: /_themes/ What is the name of this file?
A. robots.txt
B. search.txt
C. blocklist.txt
D. spf.txt
Answer: A
Q396. ou are footprinting Acme.com to gather competitive intelligence. You visit the acme.com websire for contact information and telephone number numbers but do not find it listed there. You know that they had the entire staff directory listed on their website 12 months ago but now it is not there. How would it be possible for you to retrieve information from the website that is outdated?
A. Visit google search engine and view the cached copy.
B. Visit Archive.org site to retrieve the Internet archive of the acme website.
C. Crawl the entire website and store them into your computer.
D. Visit the company’s partners and customers website for this information.
Answer: B
Explanation: The Internet Archive (IA) is a non-profit organization dedicated to maintaining an archive of Web and multimedia resources. Located at the Presidio in San Francisco, California, this archive includes "snapshots of the World Wide Web" (archived copies of pages, taken at various points in time), software, movies, books, and audio recordings (including recordings of live concerts from bands that allow it). This site is found at www.archive.org.
Q397. Which of the following keyloggers can’t be detected by anti-virus or anti-spyware products?
A. Hardware keylogger
B. Software Keylogger
C. Stealth Keylogger
D. Convert Keylogger
Answer: A
Explanation: A hardware keylogger will never interact with the operating system and therefore it will never be detected by any security programs running in the operating system.
Q398. DRAG DROP
A Successfully Attack by a malicious hacker can divide into five phases, Match the order:
Answer:
Q399. Jim was having no luck performing a penetration test on his company’s network. He was running the test from home and had downloaded every security scanner he could lay his hands on. Despite knowing the IP range of all of the systems and the exact network configuration, Jim was unable to get any useful results. Why is Jim having these problems?
A. Security scanners can’t perform vulnerability linkage
B. Security Scanners are not designed to do testing through a firewall
C. Security Scanners are only as smart as their database and can’t find unpublished vulnerabilities
D. All of the above
Answer: D
Explanation: Security scanners are designed to find vulnerabilities but not to use them, also they will only find well known vulnerabilities that and no zero day exploits. Therefore you can’t use a security scanner for penetration testing but need a more powerful program.
Q400. Bank of Timbuktu was a medium-sized, regional financial institution in Timbuktu. The bank has deployed a new Internet-accessible Web application recently, using which customers could access their account balances, transfer money between accounts, pay bills and conduct online financial business using a Web browser.
John Stevens was in charge of information security at Bank of Timbuktu. After one month in production, several customers complained about the Internet enabled banking application. Strangely, the account balances of many bank’s customers has been changed!
However, money hadn’t been removed from the bank. Instead, money was transferred between accounts. Given this attack profile, John Stevens reviewed the Web application’s logs and found the following entries:
Attempted login of unknown user: John Attempted login of unknown user: sysaR Attempted login of unknown user: sencat Attempted login of unknown user: pete ‘’; Attempted login of unknown user: ‘ or 1=1--Attempted login of unknown user: ‘; drop table logins--Login of user jason, sessionID= 0x75627578626F6F6B Login of user daniel, sessionID= 0x98627579539E13BE Login of user rebecca, sessionID= 0x90627579944CCB811 Login of user mike, sessionID= 0x9062757935FB5C64 Transfer Funds user jason Pay Bill user mike Logout of user mike
What kind of attack did the Hacker attempt to carry out at the bank? (Choose the best answer)
A. The Hacker attempted SQL Injection technique to gain access to a valid bank login ID.
B. The Hacker attempted Session hijacking, in which the Hacker opened an account with the bank, then logged in to receive a session ID, guessed the next ID and took over Jason’s session.
C. The Hacker attempted a brute force attack to guess login ID and password using password cracking tools.
D. The Hacker used a random generator module to pass results to the Web server and exploited Web application CGI vulnerability.
Answer: A
Explanation: The following part: Attempted login of unknown user: pete ‘’; Attempted login of unknown user: ‘ or 1=1--Attempted login of unknown user: ‘; drop table logins--Clearly shows a hacker trying to perform a SQL injection by bypassing the login with the statement 1=1 and then dumping the logins table.
