The reconstructed evaluation script behind this rule's OVAL check(s) — every module a compound check combines, with this rule's own concrete values and DISA's SCC tool's real per-module mechanism curated from static teardown of SCC releases.
# Windows PowerShell
# Reconstructed from oval:mil.disa.fso.windows:def:3740
# The system is configured for a greater keep-alive time than recommended.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.
# Verifies 'MSS: (KeepAliveTime) How often keep-alive packets are sent in milliseconds' is set to '300000 or 5 minutes (recommended)' or less
# registry_object (registry_test)
function test_1 {
return (((@{String='reg_sz';ExpandString='reg_expand_sz';Binary='reg_binary';DWord='reg_dword';MultiString='reg_multi_sz';QWord='reg_qword';None='reg_none'}[(Get-Item -Path 'Registry::HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters').GetValueKind('KeepAliveTime').ToString()]) -eq 'reg_dword') -and (((Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters' -Name 'KeepAliveTime' -ErrorAction SilentlyContinue) | Select-Object -ExpandProperty 'KeepAliveTime') -le 300000))
}
if (test_1) {
Write-Output "PASS"
} else {
Write-Output "FAIL"
} Assessment Script Powered by AISyntax-verified
A standalone PowerShell script to assess this control automatically. Review before running it in your environment.
Syntax-checked as valid PowerShell. Not executed here — running it for real needs the actual windows_7 target this check assesses.
# OVAL Definition: oval:mil.disa.fso.windows:def:3740
$registryPath = "HKLM:\System\CurrentControlSet\Services\Tcpip\Parameters"
$registryValue = Get-ItemProperty -Path $registryPath -Name "KeepAliveTime" -ErrorAction SilentlyContinue
if ($registryValue -and $registryValue.KeepAliveTime -le 300000) { Write-Output "PASS"; Exit 0 } else { Write-Output "FAIL"; Exit 1 }