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6Suppose a firewall is configured to allow outbound TCP connections but inbound connections only to specified ports. The FTP protocol now presents a problem: When an inside client contacts an outside server, the outbound TCP control connection can be opened normally but the TCP data connection traditionally is inbound.
(a) Look up the FTP protocol in, for example, Request for Comments 959. Find out how the PORT command works. Discuss how the client might be written so as to limit the number of ports to which the firewall must grant inbound access. Can the number of such ports be limited to one?
(b) Find out how the FTP PASV command can be used to solve this firewall problem.
Compute the monthly payment for $ 22,000 car with a $3,500 down payment and $500 trade-in if term of loan is 5 years and the annual interest rate is 5%.
What are the 3 different types of opcodes for the LC3
Determine one (1) additional theory that a researcher could use to explain the cause of digital-crime and non-digital crime. Include one (1) example for each crime in question to support your response.
Discuss the role of simulation software ( e.g. , ANSYS, Abaqus, and Simulink) in engineering analysis and optimization, and compare and contrast the impact of licensed software and open-source software ( e.g. , free codes) in performing engineering d..
Confirm graphically that the solution from part a maximizes the farmer's profit from his land.
It would have been hard to miss the information had you been scanning the newspapers during the tumultuous February of 2011, when the long-standing Mubarak regime in Egypt was swept from power by a popular uprising ultimately aligned with the militar..
What are your thoughts about your results? What are you feelings towards this assignment? How would you improve it? Submit this with your assignment.
A machine has a 32 bit virtual address space and a 16kb page size. It has 1gb of physical memory. How many pages does a process have? How many bytes are needed for a page table, assuming 4 control bits and that disk addresses are stored elsewhere?
A network manager discovers that a network component is performing poorly and issues an order to the technicians to replace it. Which MIB group contains the information for the technician to find out the physical location of the component?
It replaces each 'a' with 'z', each 'b' with 'y', each 'c' with 'x', etc. The function must work for uppercase letters the same way, but it must not change any other characters. Note that if you call the function twice like this str = codeit(codei..
What type of compression is not good for the native use of microsoft word documents?
The intended purpose of the following module is to determine whether the value parameter is within a specified range. The module will not work, however. Find the problem
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