QuestionQ17

Communications and Network Security

John is working as a professional Ethical Hacker and has been assigned a project to test the security of www.we-are-secure.com. He wants to redirect all TCP port 80 traffic to UDP port 40 so that he can bypass the firewall of the We-are-secure server.

Which of the following tools will John use to accomplish this task?

  • A PsList
  • B Cain
  • C Fpipe
  • D PsExec
Explanation

FPipe is a TCP/UDP port redirection utility (originally developed by Foundstone) that lets a user create a source port from which to redirect traffic, enabling an attacker or tester to redirect traffic from one port/protocol to another—such as redirecting TCP port 80 traffic to UDP port 40—in order to bypass firewall rules that block certain ports or protocols. PsList and PsExec are Sysinternals administrative utilities used for listing running processes and executing programs on remote systems, and Cain (Cain & Abel) is a password recovery and network sniffing tool; none of these provide port/protocol redirection functionality.

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