ExamInsight For CompTIA Security+ Certification Exam SY0-101 by Tcat Houser, Helen O'Boyle, Helen O¿Boyle

By Tcat Houser, Helen O'Boyle, Helen O¿Boyle

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Extra resources for ExamInsight For CompTIA Security+ Certification Exam SY0-101 (ExamInsight)

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What can I do? DDoS attacks are hard to prevent, and are, unfortunately, a fact of life on public networks. However, there are some simple precautions you can take. First of all make sure you have a good relationship with your ISP and that you have an emergency contact number to reach a technical person. Time wasted calling around to find the right person to help means time wasted getting your public services back online. Second, many operating systems & TCP/IP stack implementations provide an option to change the timeout on a TCP conversation.

An MITM attack can be compared to inserting a black box in between the 2 hosts participating in the conversation. If an attacker can place himself in a position where he is on the network between the two hosts, it is technically possible for the attacker to control what data is sent between the hosts. The attacker’s machine does not have to be physically between the two hosts… the other two machines just have to be convinced to route packets destined for the other host through the attacker’s machine.

As we already know, a normal TCP/IP conversation takes place between 2 hosts, and involves the sending, receiving and acknowledgment of packets. An MITM attack can be compared to inserting a black box in between the 2 hosts participating in the conversation. If an attacker can place himself in a position where he is on the network between the two hosts, it is technically possible for the attacker to control what data is sent between the hosts. The attacker’s machine does not have to be physically between the two hosts… the other two machines just have to be convinced to route packets destined for the other host through the attacker’s machine.

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