Understand what Network Access Control Lists are
- [Instructor] Network Access Control Lists, or NACLs,…are a tool for controlling how traffic flows into,…and out of, subnets within a VPC.…If you have configured firewalls in the past,…NACLs will feel very familiar to you.…Let's go over a few important things to know…about how NACLs work in AWS.…First off, NACLs exist within the confines…of a single VPC, and do not span VPCs.…If you want to use the same NACL ruleset in multiple VPCs,…you'll have to configure the NACL in each VPC.…
Within a VPC, NACLs can be associated with…one, or more, subnets.…However, each subnet can only be associated…with one, and only one, NACL.…Where security groups are granular to the EC2 instance,…NACLs affect entire subnets.…NACLs are applied in a stateless fashion.…As such, rules to allow network traffic…must be explicitly defined.…NACLs differ from security groups in that both allow…and deny rules can be configured.…For instance, if you use a NACL instead of a security group…to allow a server to reach the internet to pull down…patches, you would have to specify an allow rule…
This course is also part of a series designed to help you prepare for the AWS Certified SysOps Administrator – Associate certification exam.
This course includes trademarks owned by Amazon Web Services. This course has not been prepared, approved, or endorsed by Amazon Web Services.
- Exploring Virtual Private Cloud (VPC)
- Configuring subnets, route tables, and gateways
- Working with access control lists (ACLs)
- Maintaining network security
- Implementing VPC peering and peer routing
- Using Route 53
- Managing a private DNS
Skill Level Intermediate
1. AWS Network Foundations
Understanding Route 534m 54s
2. Virtual Private Cloud
3. VPC Security
4. VPC Peering
5. Route 53
Wrap up1m 48s
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