How Azure Network Security Groups Filter Network Traffic?
Azure Network Security Groups filter the network traffic by letting in or out for the communication based on defining the rules, offering a crucial layer of security for Azure resources. The following aspects discusses on Azure network security groups filters:
- Rule Based Routing: NSGs are configured with the inbound and outbound security rules that decides the allow or deny of the traffic for accessing the Azure services based on criteria such as source and destination, IP address, port ranges and protocols.
- Traffic Prioritization: NSGs priortizes the rules based on their order of precedence, with higher priority rues taking precedence over lower priority ones.
Inbound Traffic Control
- Inbound rules control the incoming traffic to the services allowing administrators to specify which incoming connections should be permitted or blocked.
- It refers to the data coming into the network or a specific resource within a network from the external sources. It often requires the security measures such as firewalls and network security groups to control the access and protect against the incoming threats/
Outbound Traffic
It represents the data that leaving from the network to outside or a specific resources within a network. we have to restrict the data flow that going to outside to avoid it is not get collected to authorized users and unsecured networks. It typically subjects to the filtering and monitoring of outbound traffic to ensure a security, compliance and efficient resource utilization.
Intra-Subnet Traffic
It facilitates with establishing the communication between the resources within the same subnet or virtual network. It often considered the trusted traffic but still requires the monitoring and ensuring potential security measures to prevent the authorized access or security breaches.
Azure Network Security Groups
Network Security Groups (NSG) play a crucial role in securing the virtual environment within Azure. Azure provides various services to help users secure their applications and the infrastructure that users create.
Table of Content
- What is Azure?
- What are Azure Networks?
- Traditional Server Management
- Problem in Traditional Server Management
- Network Security Groups As A Solution
- How Do Azure Network Security Groups Work?
- Azure Network Security Rules
- Default Security Rules
- Augmented Security Group Rules
- Service Tags In Azure Networks
- What Are Application Security Groups?
- How Azure Network Security Groups Filter Network Traffic?
- Best Practices For Implementing NSG in Azure
- How to Create NSG in Azure Portal? A Step-By-Step Guide
- Video Demonstration of Azure Network Security Groups with Virtual Machine
- Association of Network Security Groups
- Virtual Network And Subnet Design
- Azure Platform Considerations
- Conclusion
- Azure Network Security Groups – FAQs