hping3:tldr:446a8

The command "hping3 --scan ${80,3000,9000} --syn ${ip_or_hostname}" is used to perform a SYN scan on a particular IP address or hostname using the hping3 tool.

Here is a breakdown of the command:

• "hping3" refers to the hping3 tool, which is a network tool used for troubleshooting, security assessment, and analysis.
• "--scan" is an option used to specify the type of scan to be performed.
• "${80,3000,9000}" represents the ports to be scanned. In this case, it specifies the ports 80, 3000, and 9000 to be scanned. These represent commonly used ports for web services, custom applications, or other services.
• "--syn" is an option that specifies the SYN scan method. SYN scanning involves sending SYN packets to initiate a connection with the target host. By analyzing the response, it can determine if the port is open, closed, or filtered.
• "${ip_or_hostname}" is a placeholder for the IP address or hostname of the target system you want to scan. You would replace this with the actual IP address or hostname.

So, when running this command, hping3 will perform a SYN scan on the specified ports (80, 3000, 9000) against the provided IP address or hostname to identify which ports are open, closed, or filtered.