Sometimes attackers try to undermine network security by denying legitimate users access to the network. In this video, learn about two techniques that you can implement to defend your network against these denial of service attacks: flood guard and loop prevention.
- [Instructor] Sometimes attackers try to undermine…network security by denying legitimate users…access to the network.…Let's take a look at two techniques you can implement…to defend your network against availability-based attacks.…Many Denial of Service attacks rely upon…flooding devices with traffic until they are overwhelmed.…One of example of this type of attack is the SYN flood.…You may recall that in a SYN flood attack,…the attacker creates thousands of partially open…TCP connections to a device by sending SYN packets,…but never answering the SYN-ACK packet…to complete the three-way handshake.…
This is one example of flooding,…and there are many similar attacks…in the attackers' toolkit.…Another example, MAC flooding, occurs when attackers…send large numbers of different MAC addresses…to a switch, hoping to overflow the switch's…MAC address table, and cause it to forget…where devices are, and then flood traffic out…to every switch port, allowing the attacker…to eavesdrop on sensitive communications.…Network devices often offer flood guard protection…
Note: This course is part of a series releasing throughout 2018. A completed learning path of the series will be available once all the courses are released.
- How IP addresses are assigned and managed
- Multilayer protocols
- VPNs and VPN concentrators
- Designing secure networks
- Firewall management techniques
- Maintaining network availability
- Software defined networking (SDN)
- Port isolation
- Network attacks
- How Wi-Fi networks function
- WPA, WPS, and propagation attacks
- Host-based network security control
Skill Level Advanced
Insights from a Cybersecurity Professionalwith Mike Chapple32m 15s Appropriate for all
1. TCP/IP Networking
2. Network Security Devices
3. Designing Secure Networks
4. Specialized Networking
5. Secure Network Management
6. Virtualized Networks
Port isolation1m 47s
7. Network Attacks
8. Transport Encryption
9. Wireless Networking
10. Host Security
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