Join Mike Chapple for an in-depth discussion in this video Maintaining network availability, part of CompTIA Security+ Exam Prep (SY0-401): Network Security.
- 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.…I cover many of these…in the Security Plus Threats and Vulnerabilities course.…One 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 opened 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 attacker's 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 forget where devices are…and then, flood traffic out to every switch port,…allowing the attacker to eavesdrop…
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- Working with the TCP/IP suite
- Securing switches and routers
- Configuring firewalls
- Setting up virtual private networks (VPNs)
- Detecting and preventing network intrusions
- Implementing unified threat management
- Using public and private network addressing effectively
- Segmenting networks
- Virtualization and cloud computing
- Managing secure networks
Skill Level Intermediate
1. TCP/IP Suite
2. Network Security Devices
3. Designing Secure Networks
4. Cloud Computing and Virtualization
5. Managing Secure Networks
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