IP forwardingUser-defined routes (UDR) change the default system routes that Azure creates for you in an Azure VNet. In the virtual appliance scenario, UDRs forward traffic to a virtual appliance such as a firewall, which is running as an Azure virtual machine.By default, a virtual machine in Azure will not accept a network packet addressed…
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User-defined routes – MS AZ-104 Exam Guide
User-defined routes In some cases, you will want to configure the routing of packets differently from what is pro- vided by the default system routes. One of these scenarios is when you want to send traffic through a network virtual appliance, such as a third-party load balancer, firewall, or router deployed into your VNet from…
Outbound internet connections
Outbound internet connections When a public IP address is assigned to a virtual machine’s network interface, outbound traffic to the internet will be routed through that IP address. The recipient will see your public IP address as the source IP address for the connection. However, the virtual machine itself does not see the public IP…
Public IP address prefixes – MS AZ-104 Exam Guide
Public IP address prefixesWhen using multiple public IP addresses, it can be convenient to have all of the IP addresses allocated from a single IP range or prefix. For example, when configuring firewall rules, this allows you to configure a single rule for the prefix, rather than separate rules for each IP address.To support this…
Basic vs Standard pricing tiers
Basic vs Standard pricing tiers Public IP addresses are available at two pricing tiers (or SKUs): Basic or Standard. All public IP addresses created before the introduction of these tiers are mapped to the Basic tier. Standard tier public IP addresses support zone-redundant deployment, allowing you to use availability zones to protect your deployments against…
Create a VNet peering using the Azure portal
Create a VNet peering using the Azure portalTo create a peering connection between two VNets, the VNets must already have been created and must not have overlapping address spaces.To create a new VNet peering from VNet-hub to VNet-spoke, connect to the Azure portal and locate VNet-hub. Under Settings, click Peerings, and then click Add to…
Service chaining and hub-and-spoke networks
Service chaining and hub-and-spoke networks A common way to reduce duplication of resources is to use a hub-and-spoke network topol- ogy. In this approach, shared resources (such as domain controllers, DNS servers, monitoring systems, and so on) are deployed into a dedicated hub VNet. These services are accessed from multiple applications, each deployed to their…
Create a virtual network and subnets using the Azure portal
Create a virtual network and subnets using the Azure portal To create a new VNet using the Azure portal, search for virtual networks. On the Virtual Net- works blade, click Create. The Create Virtual Network blade opens. Here you can provide configuration information about the virtual network. This blade requires the following inputs, as shown…
Subnets – MS AZ-104 Exam Guide
Subnets Integrating Azure resources into a virtual network requires a subnet. Subnets are used to divide the VNet IP space. Different subnets can have different network security and routing rules, so applications and application tiers can be isolated and network flows between them can be controlled. For example, consider a typical three-tier application architecture compris-…
Configure and manage virtual networks in Azure
Skill 4.1: Configure and manage virtual networks in Azure Azure Virtual Networks (VNets) form the foundation of the Azure networking infrastructure. Each VNet defines a network address space, comprising one or more IP address ranges. This network space is then carved into subnets. IP addresses for virtual machines, as well as some other services such…