Manage Network Traffic with Virtual Appliance Solution

CD

C: Forced tunneling lets you redirect or "force" all Internet-bound traffic back to your on-premises location via a Site-to-Site VPN tunnel for inspection and auditing.

This is a critical security requirement for most enterprise IT policies. Without forced tunneling, Internet-bound traffic from your VMs in Azure always traverses from

Azure network infrastructure directly out to the Internet, without the option to allow you to inspect or audit the traffic.

Forced tunneling in Azure is configured via virtual network user-defined routes.

D: ExpressRoute lets you extend your on-premises networks into the Microsoft cloud over a private connection facilitated by a connectivity provider. With

ExpressRoute, you can establish connections to Microsoft cloud services, such as Microsoft Azure, Office 365, and Dynamics 365.

Connectivity can be from an any-to-any (IP VPN) network, a point-to-point Ethernet network, or a virtual cross-connection through a connectivity provider at a co- location facility. ExpressRoute connections do not go over the public Internet. This allows ExpressRoute connections to offer more reliability, faster speeds, lower latencies, and higher security than typical connections over the Internet.

https://docs.microsoft.com/en-us/azure/vpn-gateway/vpn-gateway-forced-tunneling-rm https://docs.microsoft.com/en-us/azure/expressroute/expressroute-introduction

The partner has deployed an on-premises solution that requires access to Azure services, and all network traffic directed to a specific subnet must flow through the virtual appliance. To manage network traffic, we need to recommend two solutions.

Option A: Configure Azure Traffic Manager Azure Traffic Manager is a DNS-based traffic load balancer that can direct incoming traffic to different endpoints based on routing rules, including geographic proximity, performance, and availability. However, Azure Traffic Manager is not suitable for managing network traffic flowing through a specific subnet.

Option B: Implement an Azure virtual network An Azure virtual network provides a logically isolated and secure network environment in Azure that can be used to deploy virtual machines and other resources. By connecting an on-premises network to an Azure virtual network through a VPN or ExpressRoute connection, traffic can flow securely between on-premises and Azure environments. However, by itself, an Azure virtual network does not enable traffic to flow through a virtual appliance.

Option C: Configure a routing table with forced tunneling Forced tunneling is a technique that directs all Internet-bound traffic from a subnet to a specific destination, which can be a virtual appliance or other security device. This can be achieved by configuring a user-defined route in a routing table that has the virtual appliance as the next hop for all traffic. By using forced tunneling, all traffic from the subnet is routed through the virtual appliance, which can inspect and filter the traffic as required.

Option D: Implement Azure ExpressRoute Azure ExpressRoute is a dedicated private connection between an on-premises network and an Azure virtual network that does not use the public Internet. ExpressRoute provides higher security, reliability, and speed than a VPN connection. By using ExpressRoute, traffic can flow securely between on-premises and Azure environments, and the traffic can be directed through a virtual appliance by configuring a routing table with forced tunneling.

Therefore, the recommended solutions are options C and D: Configure a routing table with forced tunneling and Implement Azure ExpressRoute. These solutions will allow all network traffic directed to a specific subnet to flow through the virtual appliance while ensuring security and reliability.