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Update check-dns-server.ps1

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Markus Fleschutz 2023-02-15 11:02:53 +01:00
parent 5f4d05f349
commit 73cdf18b94
1 changed files with 32 additions and 28 deletions
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22
Scripts/check-dns-server.ps1
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@ -2,7 +2,7 @@
.SYNOPSIS
Check DNS servers
.DESCRIPTION
This PowerShell script checks the speed of public DNS server.
This PowerShell script measures the availability and latency of public DNS servers and lists it.
.EXAMPLE
PS> ./check-dns-server
.LINK
@ -11,26 +11,25 @@
Author: Markus Fleschutz | License: CC0
#>
function CheckDNS { param($Name, $PriIPv4, $SecIPv4)
function CheckDNS { param($Name, $IPv4Pri, $IPv4Sec)
$StopWatch = [system.diagnostics.stopwatch]::startNew()
$null = (nslookup fleschutz.de $PriIPv4 2>$null)
$null = (nslookup fleschutz.de $IPv4Pri 2>$null)
[int]$Elapsed1 = $StopWatch.Elapsed.TotalMilliseconds
$StopWatch = [system.diagnostics.stopwatch]::startNew()
$null = (nslookup fleschutz.de $SecIPv4 2>$null)
$null = (nslookup fleschutz.de $IPv4Sec 2>$null)
[int]$Elapsed2 = $StopWatch.Elapsed.TotalMilliseconds
" `"$Name`"; `"$PriIPv4`"; `"$SecIPv4`"; `"$Elapsed1 ms / $Elapsed2 ms`"; "
New-Object PSObject -Property @{ DNS_server=$Name; IPv4="$IPv4Pri / $IPv4Sec"; Latency="$Elapsed1 / $Elapsed2 ms" }
}
try {
Write-Progress "Measuring speed of public DNS servers..."
" `"DNS SERVER`"; `"PRIMARY IPv4`"; `"SECONDARY IPv4`"; `"LATENCY`"; "
function ListDNSServerSpeed {
Write-Progress "Measuring latency of public DNS servers..."
CheckDNS "Cloudflare (standard)" 1.1.1.1 1.0.0.1
CheckDNS "Cloudflare (with malware blocklist)" 1.1.1.2 1.0.0.2
CheckDNS "Cloudflare (with malware+adult blocklist)" 1.1.1.3 1.0.0.3
CheckDNS "DNS0.eu (standard)" 193.110.81.0 185.253.5.0
CheckDNS "DNS0.eu (kids)" 193.110.81.1 185.253.5.1
CheckDNS "DNS0.eu (for kids)" 193.110.81.1 185.253.5.1
CheckDNS "DNS0.eu (zero)" 193.110.81.9 185.253.5.9
CheckDNS "Google Public DNS" 8.8.8.8 8.8.4.4
CheckDNS "Level3 one" 4.2.2.1 4.2.2.1
@ -47,6 +46,11 @@ try {
CheckDNS "Quad9 (with malware blocklist, with DNSSEC, with EDNS)" 9.9.9.11 9.9.9.11
CheckDNS "Quad9 (with malware blocklist, with DNSSEC, NXDOMAIN only)" 9.9.9.12 9.9.9.12
CheckDNS "Verisign Public DNS" 64.6.64.6 64.6.65.6
Write-Progress -completed " "
}
try {
ListDNSServerSpeed | Format-Table -property @{e='DNS_server';width=50},@{e='IPv4';width=32},@{e='Latency';width=15}
exit 0 # success
} catch {
"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"