Chapter 9 1. IP hosts in two different company TCP/IP networks send IP packets to each other through the Internet. Which of the following is true about the Internet connections that must exist so that the packets can flow between the two companies? a. The two companies must connect directly to each other.
What is the history of the TCP/IP model? Why was it created? Use your textbook and Internet research to support your answer. In 1970's the DOD sponsored a project to create a standardized networking model called TCP/IP. Pg 61 - 3.2.1 exercise 3.2.1 Using Figure 3-1, define each layer of the OSI model in your own words and state what each layer provides.
Sequence number – hijacked or interrupted TCP/IP sessions via injected packets that disguises its origination from one of the two computers in a session. Spam, and phishing attacks. Vulnerabilities of these types of attacks include: unnecessary open ports, unpatched systems, poor or outdated configurations, and exposed cabling. Countermeasures to safeguard these risks and vulnerabilities include: Access control lists, firewalls, intrusion detection systems, intrusion prevention systems, protecting network cabling, utilizing anti-virus software, private addressing, closing unnecessary ports and services, and installing security patches as necessary. • Suggest security devices or configurations that should be employed to mitigate risks existing in telecommunications.
| Question 4 | What is the name of the computer you are working from? SEA-SVR2 | Question 5 | What IP addressing settings are currently configured?10.10.0.12 | Question 6 | Is the computer currently configured for DHCP? How can you tell? Yes, DHCP enabled and it received an ip address of 10.10.0.20 | Question 7 | What is the IP address of the DHCP server from which W2K8yy has obtained its IP address? DHCP Server 10.10.0.11 | Question 8 | If the answer to #7 was not the IP address of the SEA-SVR1 computer, why might this have happened?
Kostadinov goes on to note that most cyberterrorism actions are generally focused on website sabotage and email blasting. In order to prove that the network breach was a terrorist attack the company would need to provide electronic evidence of these types of information warfare. Information warfare is a term often used interchangeably with cyberterrorism but provides a deeper understanding in the shift of how data has become fundamental to society. As governments, companies and people shift to the use of digital information so have the methods used to attack (Gilmer, 2001). In order to combat this aspect of terrorism, the military have adopted computer forensics as part of their defenses (Vacca & Rudolph, 2011).
Refer to the exhibit. A router learns a route to the 192.168.6.0 network, as shown in the output of the show ip rip database command. However, upon running the show ip route command, the network administrator sees that the router has installed a different route to the 192.168.6.0 network learned via EIGRP. What could be the reason for the missing RIP route? Compared to RIP, EIGRP has a lower administrative distance.
iii. Internet – Defines the protocols used for addressing and routing the data packets. iv. Network Interface – Defines how the host connects to the network. 2.
Ping Sweep and Port Scan Activities Abstract Ping sweeps and port scans has been a notorious and yet a useful tool for hackers and system administrators alike. This paper will examine some of the possible criminal computer activities that can be executed using these two techniques. Ping sweeps and port scans at times can be a nuisance to system administrators. While describing some of these notorious computer activities, these techniques will also be shown how system administrators can use the to benefit the company. Keywords: port scan, ping sweep Ping Sweep and Port Scans Activities With the evolution of the computer technology, system administrator obviously has had to grow with the technology.
This will make it much harder for the hacker to access the information easily. This is why you should see HTTPS whenever you are dealing with an online transaction. The S in HTTPS stands for secure which is a 256 byte encryption of the transmission. Additional system security requirements are secure user authentication, secure access control, reasonable monitoring to detect unauthorized access, reasonably up-to-date firewall protection, reasonably up-to-date security software (including current patches and virus definitions), and education and training of employees. By following these protocols, the banking industry has the ability and means to protect the customers’ information and
While some people might not agree with the idea that the Internet is diminishing our intelligence. We’re provided with evidence from a few of Carr’s acquaintances who say that the more they use the Web, the more they have to stay focused on long pieces of writings. These statements make sense, due to the fact that our society has become all about immediacy and less about patience. While I’m an avid user of technology, ranging from the latest MacBook to the next iPhone, I have to agree with Carr’s claim that technology is indeed diminishing our intelligence. A few months ago I was showing my Grandmother the different shortcuts my MacBook offered, such as swiping three fingers up displayed all the open windows, swiping two fingers back loaded the previous Internet page, and she was amazed by the simplicity my