What ports should be blocked on the firewall to prevent NetBIOS traffic from not coming through the firewall if your network is comprised of Windows NT, 2000, and XP?(Choose all that apply.
Answer(s): B,C,E
NetBIOS traffic can quickly be used to enumerate and attack Windows computers. Ports 135, 139, and 445 should be blocked.
What is a NULL scan?
Answer(s): A
A null scan has all flags turned off.
What is the proper response for a NULL scan if the port is open?
Answer(s): F
A NULL scan will have no response if the port is open.
Which of the following statements about a zone transfer correct?(Choose three.
Answer(s): A,C,E
Securing DNS servers should be a priority of the organization. Hackers obtaining DNS information can discover a wealth of information about an organization. This information can be used to further exploit the network.
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