# 续期
$action = New-ScheduledTaskAction -Execute "reg.exe" -Argument 'delete "HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM\GracePeriod" /f'
$principal = New-ScheduledTaskPrincipal -UserId "SYSTEM" -LogonType ServiceAccount -RunLevel Highest
Register-ScheduledTask -TaskName "ResetRDSGrace" -Action $action -Principal $principal -Force
Start-ScheduledTask -TaskName "ResetRDSGrace"
Start-Sleep -Seconds 3
Unregister-ScheduledTask -TaskName "ResetRDSGrace" -Confirm:$false



shutdown /r /t 0



# ----------------------------------------------------------------------

# 允许IPv4 ping入站
New-NetFirewallRule -DisplayName "Allow ICMPv4‑In" -Protocol ICMPv4 -IcmpType 8 -Direction Inbound -Action Allow -Enabled True

# 查看sshd服务状态
Get-Service sshd

# 确认22端口监听
Get-NetTCPConnection -LocalPort 22

# 查看ping防火墙规则
Get-NetFirewallRule -DisplayName "Allow ICMPv4‑In"