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Azure Networking

 

                                                                                Azure

Azure's networking services offer a comprehensive suite of capabilities to connect, protect, deliver, and monitor your applications and networks. Whether you need to connect on-premises resources to the cloud, safeguard your applications from cyberattacks, optimize application performance, or gain insights into network traffic, Azure's networking solutions have you covered.

Connectivity Services:

  • Virtual Network (VNet): Create a private network in the cloud to isolate and protect your Azure resources.

  • Virtual WAN: Establish a secure and reliable connection between your on-premises network, branch offices, and Azure resources.

  • ExpressRoute: Connect your on-premises network to Azure using a private connection.

  • VPN Gateway: Create a VPN tunnel to connect your on-premises network to Azure securely over the public internet.

  • Virtual Network NAT Gateway: Enable outbound internet access for your Azure resources without exposing them to the public internet.

  • Azure DNS: Manage your domain names and DNS records in Azure.

  • Peering Service: Connect two virtual networks in Azure to share resources.

  • Azure Virtual Network Manager: Manage and control multiple virtual networks in Azure centrally.

  • Route Server: Simplify route management for large virtual networks in Azure.

  • Azure Bastion: Enable secure remote access to virtual machines in Azure.

Application Protection Services:

  • Load Balancer: Distribute incoming traffic across multiple instances of your application to improve performance and availability.

  • Private Link: Connect to Azure services privately without exposing them to the public internet.

  • DDoS Protection: Safeguard your applications from distributed denial-of-service (DDoS) attacks.

  • Firewall: Protect your applications from unauthorized access and malicious traffic.

  • Network Security Groups: Control inbound and outbound traffic to your Azure resources.

  • Web Application Firewall (WAF): Protect web applications from common web attacks.

  • Virtual Network Endpoints: Connect to Azure services without exposing them to the public internet.

Application Delivery Services:

  • Content Delivery Network (CDN): Cache your static content at strategically located edge servers worldwide to deliver it quickly to users.

  • Azure Front Door Service: Protect, route, and optimize traffic for your web applications.

  • Traffic Manager: Distribute traffic across multiple regions and cloud providers to ensure high availability and performance.

  • Application Gateway: Manage routing, authentication, and load balancing for your web applications.

  • Internet Analyzer: Gain insights into the performance and health of your web applications from a user's perspective.

  • Load Balancer: Distribute incoming traffic across multiple instances of your application to improve performance and availability.

Network Monitoring:

  • Network Watcher: Collect network traffic logs and troubleshoot network issues.

  • ExpressRoute Monitor: Monitor the health and performance of your ExpressRoute connection.

  • Azure Monitor: Gain insights into the health and performance of your Azure resources, including your network.

  • VNet Terminal Access Point (TAP): Create a copy of network traffic for monitoring and analysis.


1. Connectivity Services:


Virtual Network (VNet):

- Description:

  - Allows you to create private, isolated networks in Azure.

- Example:

  - Creating a VNet in the Azure portal:

    - Go to the Azure portal.

    - In the left-hand menu, click on "Create a resource" > "Networking" > "Virtual network."


ExpressRoute:

- Description:

  - Provides dedicated, private network connectivity between on-premises datacenters and Azure.

- Example:

  - Setting up ExpressRoute circuits:

    - Configure ExpressRoute circuits in the Azure portal.


VPN Gateway:

- Description:

  - Enables secure connections between on-premises networks and Azure VNets.

- Example:

  - Configuring a VPN Gateway in the Azure portal:

    - Create a VPN Gateway to connect on-premises and Azure networks.


Azure DNS:

- Description:

  - A scalable and secure domain name system (DNS) service.

- Example:

  - Adding DNS records:

    - Manage DNS records for your resources in the Azure portal.


2. Application Protection Services:


Load Balancer:

- Description:

  - Distributes network traffic across multiple servers to ensure no single server is overwhelmed.

- Example:

  - Configuring a Load Balancer:

    - Set up a Load Balancer to distribute traffic among backend servers.


Private Link:

- Description:

  - Enables secure access to Azure services over a private connection.

- Example:

  - Creating a Private Link service:

    - Link a specific Azure service to your VNet.


DDoS Protection:

- Description:

  - Protects applications from Distributed Denial of Service (DDoS) attacks.

- Example:

  - Enabling DDoS Protection:

    - Enable DDoS Protection for your resources in the Azure portal.


Firewall:

- Description:

  - A network security feature that filters and logs traffic.

- Example:

  - Setting up Azure Firewall:

    - Deploy Azure Firewall to control outbound and inbound traffic.


3. Application Delivery Services:


Content Delivery Network (CDN):

- Description:

  - A distributed network of servers that delivers web content to users based on their geographic location.

- Example:

  - Configuring CDN for a Storage Account:

    - Use CDN to deliver content from an Azure Storage Account.


Azure Front Door Service:

- Description:

  - A global, scalable entry-point for fast and secure delivery of applications.

- Example:

  - Setting up Azure Front Door:

    - Configure Azure Front Door to improve application performance and availability.


Traffic Manager:

- Description:

  - Distributes user traffic across multiple hosted Azure services.

- Example:

  - Configuring Traffic Manager:

    - Set up Traffic Manager for global load balancing.


Application Gateway:

- Description:

  - Provides application-level routing, load balancing, and web application firewall.

- Example:

  - Deploying Application Gateway:

    - Use Application Gateway for SSL termination and routing.


4. Network Monitoring:


Network Watcher:

- Description:

  - Provides tools to monitor, diagnose, and gain insights into your Azure network.

- Example:

  - Using Network Watcher tools:

    - Utilize tools like "IP Flow Verify" or "Connection Monitor" for network troubleshooting.


Azure Monitor:

- Description:

  - A comprehensive solution for collecting, analyzing, and acting on telemetry data from Azure resources.

- Example:

  - Setting up Azure Monitor:

    - Configure monitoring for your Azure resources.


VNet Terminal Access Point (TAP):

- Description:

  - A monitoring feature that captures and inspects the traffic of a virtual machine.

- Example:

  - Configuring TAP:

    - Set up a TAP to capture and analyze network traffic.


These examples provide a starting point for understanding and implementing various Azure networking services based on the outlined topics. Adjust configurations based on your specific requirements and security considerations.

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