In Azure, how can you secure network traffic between Virtual Machines within the same Virtual Network?Azure Virtual Network GatewayAzure Network Security GroupsAzure Load BalancerPhysical firewalls

To secure network traffic between Virtual Machines within the same Virtual Network in Azure, you can use Azure Network Security Groups (NSGs). Here are the steps:

1. Create a Network Security Group (NSG): In the Azure portal, go to 'Create a resource' > 'Networking' > 'Network security group'. Provide a name and select the subscription, resource group, and location.

2. Set up Security Rules: After creating the NSG, you need to set up security rules. Go to the NSG you created > 'Settings' > 'Inbound security rules' for incoming traffic and 'Outbound security rules' for outgoing traffic. Click on 'Add' to create a new rule. You can specify the priority, name, port, protocol, source, and destination.

3. Associate NSG to Subnet or Network Interface: Once the rules are set, you need to associate the NSG with a subnet or network interface. Go to the NSG > 'Settings' > 'Subnets' or 'Network interfaces'. Click on 'Associate' and select the target subnet or network interface.

4. Monitor and Diagnose: Azure provides monitoring and diagnostic settings for NSGs. You can monitor the traffic flow through the NSG with metrics and diagnostics logs.

Remember, NSGs act as a basic firewall to filter traffic to and from resources based on the rules you set. For more advanced features, you might want to consider Azure Firewall or third-party solutions.