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Security in cloud computing is a major concern especially when it comes to an enterprise workload. Exposing services and virtual machines to the internet is surrounded by the risk of security breaches and increased surface attacks. Since all the data is transferred using the Internet, data security is important in the cloud. Key mechanisms for protecting data in the cloud include
In this tutorial below, we will be seeing how to Access virtual machines in your google cloud project with IAP Desktop using the concept of TCP forwarding.
The TCP forwarding functionality of IAP enables you to manage who can access administrative services like SSH and RDP on your backends via the open internet. These services are shielded from the public internet via the TCP forwarding capability. Instead, to access their intended resource, requests to your services must first pass authentication and authorization checks.
Running workloads in the cloud exposes administrative services directly to the internet, which poses a danger. You can lower that risk by using IAP to forward TCP traffic and guarantee that only authorized users have access to these sensitive services.
SSH, RDP, and other types of traffic can be forwarded to VM instances using IAP TCP forwarding by creating an encrypted tunnel. You can also have precise control over which users are permitted to create tunnels and which VM instances users are permitted to connect to with IAP TCP forwarding.
The TCP forwarding function of IAP enables users to establish connections to any TCP port on Compute Engine instances. IAP establishes a listening port on the local host that directs all general TCP traffic to a particular instance. IAP then encrypts all client traffic before sending it. If users successfully authenticate and are authorized by the Identity and Access Management (IAM) policy for the target resource, they are granted access to the interface and port.
In a special case, establishing an SSH connection using gcloud compute ssh wraps the SSH connection inside HTTPS and forwards it to the remote instance without the need for a listening port on the local host.
Direct requests to an admin resource are not immediately barred when IAP is enabled. IAP only denies TCP requests to pertinent services on the resource that are not coming from IAP TCP forwarding IPs.
The assignment of a public, routable IP address to your resource is not necessary for TCP forwarding with IAP. It makes use of internal IPs instead.
IAP Desktop is a Windows programme that enables you to manage several Remote Desktop and SSH connections to Google Cloud-based virtual machine instances.
IAP Desktop uses Identity-Aware-Proxy TCP tunnelling to connect to VM instances, combining the convenience of a Remote Desktop connection manager with the security and flexibility of Identity-Aware-Proxy:
Before you start with this tutorial, you will need the following:
Create a firewall rule to allow IAP to connect your VM instance, following the below:
Configure Identity and Access Management (IAM) permissions to determine which users and groups may utilize IAP TCP forwarding and which VM instances they can connect to.
We recommend granting below mentioned IAM Role:
To install IAP Desktop, you need:
To install IAP Desktop on your computer, follow these steps:
1. Download the latest installer package.
2. To begin the installation, double-click the downloaded IapDesktop.msi file.
3. Click Install if you agree to the Apache 2.0 license.
4. When the installation is done, click Finish to start IAP Desktop:
You now set up IAP Desktop for first use:
1. On the Sign-in dialog, click Sign in:
2. A web browser window opens.
3. Sign in with your Google account.
4. Allow IAP Desktop to See, Edit, Configure, and Delete Your Google Cloud Data by checking the box on the IAP Desktop wants to access your Google account page:
IAP Desktop requires this scope to access your Google Cloud projects and to use IAP TCP forwarding.
1. To finish the sign-in process, click Continue.
2. Select your Google Cloud project in the Add project dialog and click Add project.
The Project Explorer now displays the project and all VM instances:
3. Optionally, click File > Add project in the menu to add additional projects.
To connect to a Linux VM by using SSH, do the following:
1. Right-click a VM instance in the Project Explorer tool window and select Connect:
2. IAP Desktop now automatically publishes your SSH public key, creates an IAP TCP forwarding tunnel, and opens a terminal:
To connect to a Windows VM by using Remote Desktop (RDP), do the following:
1. In the Project Explorer tool window, right-click a VM instance and select Connect:
2. If this is the first time you connect to the VM instance, you'll see a prompt:
3. IAP Desktop now automatically builds an IAP TCP forwarding tunnel and connects you to the Windows VM's Remote Desktop:
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