Learn about the purpose of network ACLs and their role in subnet security.
- [Instructor] When we define … network access control lists for our network, … we have to remember that this is … an optional security control for our subnets. … We don't have to use it. … However, you may want to use it. … You may want to control security … at the subnet level and at the instance level. … It acts as a subnet firewall and controls the traffic, … that's the network traffic, … coming in and out of each subnet … that the NACL is assigned to. … There is a default NACL, … but it really doesn't do anything. … It was assigned to the VPC … when the VPC was first created. … When you create a custom network access control list, … it overrules the default NACL … and you have to define both inbound … and outbound traffic flow. … Any protocol with a standard protocol number, … TCP/UDP, can be used for both … network access control lists and security groups. … A subnet can be associated … with only one NACL at a time, … only one set of rules. … The NACL rules are defined as inbound rules, …
- Creating a VPC
- Creating subnets
- Default and custom route tables
- IP addressing
- Creating security groups
- Configuring an internet gateway
- Peering VPCs together
- Sharing VPC resources
- Creating flow logs for monitoring
- Controlling access with IAM roles
- Dedicated tenancy
- Using automation for compliance
Skill Level Intermediate
What you should know2m 7s
1. VPC Architecture
2. Creating VPCs
3. Creating Subnets
4. IP Addressing
5. VPC Security
6. VPC Public Connectivity
7. VPC Private Connectivity
8. VPC Compliance
Next steps1m 23s
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