Using a Cloud KMS asymmetric signing key to create an X.509 certificateAfter you create an asymmetric signing key in Cloud KMS, you can download the key pair’s public key. The key is provided in PEM format – that’s pretty standard and all you need in many use cases. But especially when dealing with third party services, you sometimes need an X.509 certificate instead of a plain public key. Continue »
Using IAM to control SSH and RDP accessWhenever we grant users SSH or RDP access to VM instances, we have to ensure that access is revoked when the user changes teams or leaves the organization. This is easier said than done. Continue »
Limiting the validity of service account keysWhen you create a service account key, Google Cloud doesn’t let you specify an expiry date. The key stays valid until you either delete the key or the entire service account. But there’s a way to limit the validity of a service account key. Continue »
Why use CNG instead of CryptoAPI to store keysIn the last posts, I talked a bit about using CryptoAPI and CNG to manage encryption keys, and how using CNG sometimes requires some extra work. That begs the question – is that extra work justified? Continue »
Using a CNG-backed key as service account keyLast time, we looked at how you can use a CryptoAPI-backed key as a service account and use it to authenticate. Now let’s see how you can do the same with CNG. Continue »
Using a CryptoAPI-backed key as service account keyUsing service account keys to authenticate a service account is generally discouraged on Google Cloud, but sometimes difficult to avoid. The most common way to use service account keys is to create a new key by using the Cloud Console or gcloud, but you can also upload existing keys, including CryptoAPI-based keys. Continue »
Image creation on Google Cloud, part 2: Build processGoogle Cloud provides public images for a range of Windows Server versions, but in some situations, it’s necessary to build your own image. In this second part of the series, let’s look at how the build process works. Continue »
Image creation on Google Cloud, part 1: Windows SetupGoogle Cloud provides public images for a range of Windows Server versions, but in some situations, it’s necessary to build your own image. In this first part of the series, let’s review of how Windows Setup works. Continue »
IAP Desktop 2.16 improves the Project Explorer and lets you customize fontsRelease 2.16 is out, and it contains multiple improvements to the Project Explorer tool window as well as the ability to customize your SSH terminal better. Continue »
Limit metadata server access to specific Windows users or processesBy default, access to the Compute Engine metadata server is not limited to specific processes or users on a VM, even low-privilege processes can request service account credentials. Can we limit metadata server access to specific Windows users or processes? Continue »
Using libssh2 on Windows: lessons learntDocumentation is not where libssh2 shines most. Continue »
Building libssh2 on Windows: lessons learntLibssh2 is written in plain C and runs on many platforms, including Windows. But to use the library on Windows, you have to build it first – and as it turns out, that is easier said than done. Continue »
Using IAP Desktop for zero-trust SSH accessIAP Desktop 2.13 now lets you connect to Linux instances by using SSH. You can run multiple SSH and Remote Desktop in parallel, all secured by Identity-Aware-Proxy. Continue »
Updating googet packages behind a proxyCompute Engine uses googet to pre-install drivers and other critical system components on Windows VMs. But how do you update these packages if the VM does not have internet access?
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Using Google Cloud’s “Set Windows password” function on a domain controllerWhat happens if you use the “Set Windows password” function on a domain controller? Continue »
Preventing users from requesting Windows credentials on GCPAfter creating a Windows VM on Google Cloud, users can use the Cloud Console or IAP Desktop to request login credentials. But what are the risks of letting users generate credentials, and is there a way to prevent them from doing so? Continue »
NTrace, 13 years later13 years ago, I wrote NTrace, a dynamic function boundary tracing toolkit for Windows NT inspired by DTrace. NTrace supported both user-mode and kernel mode tracing and, like DTrace, was able to instrument machine code on the fly. Continue »
Does IAP Desktop support .rdp files, or anything similar?If you frequently use Remote Desktop, then you might be used to creating .rdp files for the servers you connect to most often. IAP Desktop does not support .rdp files, but there is an alternative way to open IAP Desktop and connect to a server in a single click.
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IAP Desktop 2.11Yesterday I released version 2.11 of IAP Desktop. This new version introduces multi-display support and more. Continue »
Hijacking other user’s TCP tunnelsIf you are a frequent SSH user, then you’ll be familiar with local port forwarding. Creating tunnels by using local port forwarding is useful, easy, but also not without risks. Continue »