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7 Minute Security

Sep 18, 2019

For Windows VMs

  • Take a snapshot right after the OS is installed, as (I believe) the countdown timer for Windows evaluation mode starts upon first "real" boot.
  • Want to quickly run Windows updates on a fresh Win VM? Try this (here's the source):
 powershell Install-PackageProvider -Name NuGet -Force powershell Install-Module PSWindowsUpdate -force powershell Set-ExecutionPolicy bypass powershell Import-Module PSWindowsUpdate powershell Get-WindowsUpdate powershell Install-WindowsUpdates -AcceptAll -AutoReboot 
  • To turn on remote desktop:
 Set-ItemProperty -Path 'HKLM:\System\CurrentControlSet\Control\Terminal Server'-name "fDenyTSConnections" -Value 0 
  • To set the firewall to allow RDP:
 Enable-NetFirewallRule -DisplayGroup "Remote Desktop" 
  • To stop the freakin' Windows hosts from going to sleep:
 powercfg.exe -change -standby-timeout-ac 0 
  • To automate the install of VMWare tools, grab the package from VMWare's site, decompress it, then:
 setup64.exe /s /v "/qn reboot=r" 
  • To set the time zone via command line, run tzutil /l and then you can set your desired zone with something like tzutil /s "Central Standard Time"

For Linux VMs

  • Get SSH keys regenerated and install/run openssh server:
 apt install openssh-server -y mkdir /etc/ssh/default_keys mv /etc/ssh/ssh_host_* /etc/ssh/default_keys/ dpkg-reconfigure openssh-server systemctl enable ssh.service systemctl start ssh.service 

Next user group meeting September 30!