How to use the command 'dhcpwn' (with examples)
The ‘dhcpwn’ command is a tool that allows you to test DHCP IP exhaustion attacks and sniff local DHCP traffic. It is useful for assessing the security of DHCP (Dynamic Host Configuration Protocol) servers and networks.
Use case 1: Flood the network with IP requests
Code:
dhcpwn --interface network_interface flood --count number_of_requests
Motivation: One possible motivation for flooding the network with IP requests is to assess the robustness and response of a DHCP server under heavy load. This can be useful for identifying potential vulnerabilities or performance issues.
Explanation:
--interface network_interface: This argument specifies the network interface that will be used for sending the IP requests. Replace ’network_interface’ with the name of the specific interface you want to use.flood: This command indicates that you want to flood the network with IP requests.--count number_of_requests: This argument defines the number of IP requests to send. Replace ’number_of_requests’ with the desired number.
Example output:
DHCP IP flood initiated.
Sent 1000 IP requests to the DHCP server.
Use case 2: Sniff local DHCP traffic
Code:
dhcpwn --interface network_interface sniff
Motivation: Sniffing local DHCP traffic allows you to analyze the DHCP communication happening within your network. This can be useful for troubleshooting DHCP-related issues, identifying rogue DHCP servers, or monitoring DHCP activity for security purposes.
Explanation:
--interface network_interface: This argument specifies the network interface on which you want to capture DHCP traffic. Replace ’network_interface’ with the name of the specific interface you want to use.sniff: This command indicates that you want to capture and sniff DHCP traffic on the specified interface.
Example output:
Sniffing DHCP traffic on network interface eth0...
DHCP Discover packet received from 192.168.1.10
DHCP Offer packet sent from 192.168.1.1 to 192.168.1.10
DHCP Request packet received from 192.168.1.10
DHCP Ack packet sent from 192.168.1.1 to 192.168.1.10
...
Conclusion:
The ‘dhcpwn’ command provides useful capabilities for testing DHCP IP exhaustion attacks and analyzing local DHCP traffic. By using this tool, you can evaluate the resilience of DHCP servers and gain insights into the DHCP communication happening within your network. It is important to use this tool responsibly and only on networks/systems that you have permission to test or monitor.
