Port Scanning

Port scanning is a technique used to identify open ports on a network host. Each program on a device is assigned a port number to ensure correct data delivery. While hackers may use port scanning for reconnaissance, network administrators use it to verify security protocols. Tools like nmap can detect open ports to assess network security. However, port scanning should not be conducted without permission, as it may be seen as a precursor to an attack.

What is the primary purpose of assigning a port number to a program on a device?

• To encrypt the data being transmitted

• To identify the device on the network

• To ensure data is sent to the correct application

• To enhance the speed of data transmission

How can port scanning be used by hackers?

• To improve network speed

• To encrypt data

• To find out what software and services are installed

• To create new network protocols

What is a lawful use of port scanning?

• To steal sensitive data

• To check network security protocols

• To bypass firewalls

• To disrupt network services

Which tool can be used to detect open ports on a network?

• Wireshark

• Burp Suite

• Metasploit

• Nmap

Why should port scanning not be done without permission?

• It is illegal in all circumstances

• It can slow down the network

• It can lead to data loss

• It is considered a precursor to a network attack