![]() ![]() She has a SANS/GSEC certification in security and prefers Heavy Duty Reynolds wrap for her tinfoil hat.Taskset Cheatsheet | Pandoc Cheatsheet | Curl Cheatsheet | Grep CheatSheet | Cron CheatSheet | Grep CheatSheet | More! She blogs at and is on twitter at She lurks on Twitter and Facebook, so if you are on Facebook with her, she really did read what you posted. In addition, she provides forensic computer investigations for the litigation consulting arm of the firm. In real life, she’s the IT wrangler at her firm, Tamiyasu, Smith, Horn and Braun, where she manages a fleet of Windows servers, Microsoft 365 deployments, Azure instances, desktops, a few Macs, several iPads, a few Surface devices, several iPhones and tries to keep patches up to date on all of them. She writes the Patch Watch column for, is a moderator on the listserve, and writes a column of Windows security tips for. Susan Bradley has been patching since before the Code Red/Nimda days and remembers exactly where she was when SQL slammer hit (trying to buy something on eBay and wondering why the Internet was so slow). You can also disable PowerShell 2.0 in the Windows features options. To reenable PowerShell 2.0, replace disable with enable:Įnable-WindowsOptionalFeature -Online -FeatureName MicrosoftWindowsPowerShellV2Root ![]() This command disables PowerShell 2.0 immediately. In a console window execute the following command:ĭisable-WindowsOptionalFeature -Online -FeatureName MicrosoftWindowsPowerShellV2Root Once you standardize on PowerShell 7 you can then remove or disable PowerShell 2 to better secure your network. A preview release of 7.3.0 was released on June 22, 2022. The most recent release of PowerShell is version 7.2.5. If you standardize on Windows 10 or Windows 11 and PowerShell 7, you can use AMSI, Constrained Language mode, Constrained Language mode with Applocker and WDAC, deep script block logging, over-the-shoulder transcription logging, module logging, and SSH remoting. You should also review the use of older Windows operating systems and their impact on the risk of your network. It’s recommended to disable and uninstall the deprecated PowerShell Version 2,0) on Windows 10 and other versions. Newer PowerShell versions offer more logging and security enhancements. One key recommendation is to upgrade PowerShell. ![]() Sudo service ssh restart Standardize on PowerShell 7 Next, start an elevated pwsh session and install RemotingTools module and run the Enable-SSHRemoting command: On a sample Ubuntu workstation, open a terminal session and install OpenSSH: The following commands will install the module from the PowerShell Gallery. Set-Service -Name sshd -StartupType 'Automatic'įinally, use the remoting tools to simplify configuring SSH based remoting. To enable the SSH server service to start automatically, set the following service: Get-PSSessionConfiguration | Format-Table -Property Name, Permission The Windows firewall can be set with Group Policy or Intune to block PowerShell remoting.įirst review what access rights you have set by using the following command: Too many companies do not take the time to use the technology they have to control communication. Use PowerShell remoting only where neededįirst, decide where you want to use PowerShell remoting and where you don’t want it to be functional. ![]() This guidance recommends keeping PowerShell in your network rather than blocking but offers the following advice to keep it secure. Cybersecurity and Infrastructure Security Agency (CISA), New Zealand’s NCSC, and the UK NCSC recently released a document called Keeping PowerShell: Security Measures to Use and Embrace. The tools that you use to monitor, maintain and access your network are often the same code that attackers use to attack your network. Rather than installing malicious software on your network that antivirus software might flag, attackers use the code already there to launch attacks. It’s the goal of attackers going after your network. Living off the land is not the title of a gardening book. ![]()
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