Learn about how a rogue DHCP server can be effective for a man-in-the-middle (MITM) attack.
- [Instructor] When setting up a DHCP server, … you include information on the address pool, … exclusions, lease time, and then you supply information … for the client on the IP address on the DNS server … and default gateway. … When a client joins the network and requests an IP address, … the DHCP server supplies the information. … When an unauthorized or rogue server … is on your network, it can start supplying clients … with bogus information that points the victims … to the wrong default gateway and DNS server. … The victim may be unaware … that they have the wrong information. … When the client has the wrong default gateway, … the attacker is essentially a man in the middle … and can capture and sniff any traffic … destined to the gateway, … such as usernames and passwords sent in the clear. … And then they forward it to the real gateway. … In addition, an attacker can create a rogue DNS server … so they can design a phishing website … to send the client in order to obtain … confidential information, …
Note: The topics in this course will prepare you for key objectives on the Certified Ethical Hacker exam. Find an overview of the certification and the exam handbook at https://www.eccouncil.org/programs/certified-ethical-hacker-ceh/.
- Sniffing network traffic
- Passive vs. active attacks
- Comparing IPv4 to IPv6
- MAC and macof attacks
- Investigating DHCP attacks
- Detecting ARP and DNS spoofing
- Sniffing tools and techniques
Skill Level Beginner
1. Sniffing Overview
2. MAC Attacks
6. Sniffing Tools and Techniques
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