GIAC GCFW Question Answer
John works as a professional Ethical Hacker. He has been assigned the project of testing the security of www.we-are-secure.com. He has successfully performed the following steps of the pre-attack phase to check the security of the We-are-secure network:
l Gathering information
l Determining the network range
l Identifying active systems
Now, he wants to find the open ports and applications running on the network. Which of the following tools will he use to accomplish his task?