Lisa Bock shows how an attacker can launch a denial-of-service attack by launching a DHCP starvation attack. Using Yersinia, an attacker sends hundreds of DISCOVER packets, and exhausts the IP address pool.
- [Narrator] Setting up a DHCP server on a router…is fairly straightforward.…Here I'll step you through some of the commands.…This enables the DHCP server…and relay features on your router.…This specifies which IP addresses should be excluded,…that would include printers, servers,…or other devices that have a static IP address.…This creates a name for a DHCP server address pool.…This configures a subnet network name…and mask of the DHCP address pool.…
This specifies the IP address…of a DNS server that is available…to any DHCP client.…This gives the IP address to the default router…for the DHCP client.…And this specifies the duration of the lease.…The default is generally one day.…DHCP depletion can happen on a network.…A couple of reasons.…The settings may include one lease per client.…The server has many reserved leases,…and this can lead to an unbalanced DHCP addresses.…
The server scopes have uneven lease times.…The DHCP scope has uneven sizes.…Or there is an influx of new users on the network.…A DHCP starvation attack exhausts…
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
- Mark as unwatched
- Mark all as unwatched
Are you sure you want to mark all the videos in this course as unwatched?
Take notes with your new membership!
Type in the entry box, then click Enter to save your note.
1:30Press on any video thumbnail to jump immediately to the timecode shown.