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Update block-brute-force-windows-attack-attempts.ps1 #1

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Update block-brute-force-windows-attack-attempts.ps1 #1

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c583fd4
Update block-brute-force-windows-attack-attempts.ps1
binnychan Mar 29, 2021
e83b456
Update block-brute-force-windows-attack-attempts.ps1
binnychan Mar 29, 2021
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16 changes: 12 additions & 4 deletions block-brute-force-windows-attack-attempts.ps1
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Original file line number Diff line number Diff line change
@@ -1,6 +1,8 @@
#Checks for IP addresses that used incorrect password more than 10 times
#within 24 hours and blocks them using a firewall rule 'BlockAttackers'

$logPath = '.\blocked.txt'

#Check only last 24 hours
$DT = [DateTime]::Now.AddHours(-24)

Expand All @@ -23,15 +25,21 @@ $arRemote = $ar.RemoteAddresses -split(',')
$w = $g | where {$_.Name.Length -gt 1 -and !($arRemote -contains $_.Name + '/255.255.255.255') }

#Add the new IPs to firewall rule
$c = 0
$w| %{
if ($ar.RemoteAddresses -eq '*') {
$ar.remoteaddresses = $_.Name
$ar.RemoteAddresses = $_.Name
}else{
$ar.remoteaddresses += ',' + $_.Name
$ar.RemoteAddresses += ',' + $_.Name
}
$c += 1
}

#Write to logfile
if ($w.length -gt 1) {
$w| %{(Get-Date).ToString() + ' ' + $_.Name >> '.\blocked.txt'}
$t = $arRemote.Length
if ($c -gt 0) {
$w| %{(Get-Date).ToString() + ' ' + $_.Name >> $logPath}
$t += $c
}

(Get-Date).ToString() + ' Summary : ' + $c + '/' + $t + ' Added ' >> $logPath