Managing cloud services from major cloud providers.Simple scripting to automate repetitive tasks.Background jobs and automation techniques.In Learn PowerShell in a Month of Lunches, Fourth Edition you will learn: – credit the Featured Image used on this blog to DBATools.Designed for busy IT professionals, this innovative guide will take you from the basics to PowerShell proficiency through 25 tutorials you can do in your lunch break. In addition to the posts already linked to. The next steps were to continue to talk about it.įurther reading, these are all the blogs and articles I found when researching this. Multiple people disputed my claims of PowerShell Remoting being on by default. In which one of the key stakeholders hadn’t even seen my email. We had a follow up call in early January. So did my response correct their thinking? Not yet. But several of the blogs I link to have a lot more recommendations for securing PowerShell. If you do nothing else, upgrade all versions of PowerShell to the latest release. These features allow you to answer the classic questions who, what, when, where, and how for activities on your servers.” For this reason, PowerShell should be the only tool you allow for remote administration. Hackers will leave fingerprints everywhere, unlike popular CMD utilities. “The improvements in WMF 5.0 (or WMF 4.0 with KB3000850) make PowerShell the worst tool of choice for a hacker when you enable script block logging and system-wide transcription. There’s a whole lot of good you can do for PowerShell Security, I’ll quote Ashley McGlone PFE at MS. Turning off will break your environment.So, reading into that, even using consoles like Hyper-V or Failover Cluster manager on the local host itself still require PowerShell remoting to work correctly. The consoles can thus remain more locked down and secured, and Administrators can stay out of the data center entirely.” Because local administration is exactly the same as remote administration (via Remoting), there’s no longer any reason to physically or remotely access server consoles. This approach actually helps better secure the data center. Otherwise, critical services will not be able to be managed, even through Remote Desktop or directly on the server console. Organizations are therefore well-advised to start immediately finding a way to include Remoting in their permitted protocols. Without Remoting, server administration is impossible. Even when running a graphical management console locally on a server, the console still “goes out” and “back in” via Remoting to accomplish its tasks. “ As of Windows Server 2012, PowerShell Remoting is enabled by default and is mandatory for server management. That said, there is a big, big problem with turning off PowerShell Remoting and I’ll let Don Jones explain from his post here: While executing remote PowerShell, credentials are never stored in any persistent storage. Even when using HTTP, credentials are not transmitted over the network. Beyond that, traffic is encrypted from end to end. So that’s one real quick way to limit who has access to execute remote PowerShell. To execute remote PowerShell against a computer you need to be a member of the local administrators group on that server. Lets talk about the main crux of their complaint, PowerShell Remoting. Now that you’re caught up, I’ll go over why this is a terrible idea, like I did in my emailed response back to this person. It would essentially break our entire environment. You can imagine my terror after reading this. We also make heavy use of PowerShell with our Orchestrator server to do everything from provision new servers to checking service account password expiration. *Record scratch* Say what? In this environment we have 3 Hyper-V clusters. The email contained this sentence: “new rules are going to be applied to limit the ability for any window server from being able to use remote powershell to other window servers” Whats this all about? In December I received an email about changes to an environment I help manage. I know it can be scary cause PowerShell is pretty damn powerful, but disabling remote PowerShell is not the answer. Dear security experts, PowerShell is not a vulnerability, in fact its your friend in keeping environments secure.
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