## Choices Related to Timing - From Light to Very Aggressive

**-T0 - T5** These timing templates affect many variables, providing a simple way to adjust Nmap's overall speed from very slow (-T0) to extremely aggressive (-T5).

```sh
nmap -T4 -Pn -PA -vv -p22,25,80,8000 10.0.0.0/16
```


Choices related to timing

Nmap is one of the most well-known tools that you can use to perform versatile network scans. Every information security professional should know how to use this tool.

Nmap is one of the most well-known network scanning tools, often used by cybersecurity experts. In this course, we will learn how to use this tool and explore its capabilities. Additionally, we will examine the traffic generated by the tool and analyze the pros and cons of different scanning methods. It is beneficial to have an understanding of how networks operate in this course.

Warning! - Conducting network scans without permission may cause system malfunctions and/or crashes. Please refrain from attempting to scan any address/system without certainty that said system is in your possession or that you have permission to do so.

Computer Networks

What is Nmap?

Nmap installation on your own workstation (optional)

Intro

Defining the destination

Detection of hosts

Host discovery techniques

Finding hosts

Introduction to port scanning

Saving the output and determining the resolution of the output

Configuring ports

IPv6 scanning

Port scanning - overview

TCP SYN scan

TCP connect scan

UDP scan

TCP FIN, NULL and Xmas scan

TCP ACK scan

IP Protocol scan

Port scanning techniques

Identification of services (-sV)

Identification of services and operating system

An introduction to Nmap scripts

Nmap scripts

Nmap

Choices related to timing

Learn to hack — start here