How to control the Traffic to Subnets Using Network ACLs? A Step-By-Step Guide
The following are the steps that guides you in controlling the traffic to subnets using the Network ACLs:
Step 1: Create a Network ACL
- Firstly start by creating a Network ACL in your VPC through the AWS management Console or using AWS CLI commands.
Step 2: Associate the Network ACL with Subnets
- Associate the network ACLs with the subnets where you want to control the traffic.
- You can also associate one NACL to mutliple subnets, but each subnet can only have one Network ACL assoicated with it at a time.
Step 3: Define Inbound and Outbound Rules
- Configure the inbound and outbound rules within the network ACL to permit or deny any specific types of traffic. Rules are evaluated in order, starting with the lowest numbered rules.
Step 4: Priortize Rules
- Arrange the rule in the order of priority, with the most specific rules at the top and the more general rules at the bottom facilitating its evaluation against the appropriate rules.
Step 5: Configure Rule Actions
- Specify the action whether to the traffic rule to be allowed or deny for each rule based on your security requirments. Example: you can allows the HTTP and HTTPS traffic while denying the access to specific IP addresses and protocols.
- Apply the changes to the Network ACL. The updated rules will take the effect immediately and start controlling the traffic that is coming to the associated subnets.
Difference between Security Group and Network ACL in AWS
In AWS Cloud, Both the security groups and network ACLs play a important roles in managing the network traffic, but they work differently. Understanding the difference of these make us the aware of the security implementation of AWS Setup. In the article, we will disucss in detail about what are Security groups and Network ACL, their differences and troubleshooting issues much more..
Table of Content
- What is the difference between Security Group and Network ACL ?
- What are AWS Security Groups?
- What is Network ACL in AWS?
- How does Network ACL ( NACL ) works?
- What is the difference between Network ACL and Route Table?
- How to control the Trafficc to Subnets Using Network ACLs? A Step-By-Step Guide
- Network ACL Basis
- Network ACL Rules
- Network ACLs and Other AWS Services
- Work With Network ACLS
- Troubleshooting of Security Groups And Network ACLs
- Network ACL AWS – FAQs
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