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Renamed to list-dns-servers.ps1 and to Data/public-dns-servers.csv

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Markus Fleschutz 2023-02-19 10:04:45 +01:00
parent 88f92eb3c7
commit a40f0cf9c7
4 changed files with 50 additions and 44 deletions
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2
Data/dns-server-list.csv → Data/public-dns-servers.csv
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@ -1,4 +1,4 @@
NAME, IPv4_PRI, IPv4_SEC
PROVIDER, IPv4_PRI, IPv4_SEC
"AdGuard DNS", 94.140.14.14, 94.140.15.15
"CleanBrowsing", 185.228.168.9, 185.228.169.9
"Cloudflare (standard)", 1.1.1.1, 1.0.0.1
1 NAME PROVIDER IPv4_PRI IPv4_SEC
2 AdGuard DNS 94.140.14.14 94.140.15.15
3 CleanBrowsing 185.228.168.9 185.228.169.9
4 Cloudflare (standard) 1.1.1.1 1.0.0.1

1
README.md
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@ -67,6 +67,7 @@ Mega Collection of PowerShell Scripts
| [install-wsl.ps1](Scripts/install-wsl.ps1) | Installs Windows Subsystem for Linux (WSL), needs admin rights. [Read more...](Docs/install-wsl.md)|
| [list-apps.ps1](Scripts/list-apps.ps1) | Lists the installed applications. [Read more...](Docs/list-installed-apps.md) |
| [list-cli-tools.ps1](Scripts/list-cli-tools.ps1) | Lists installed command-line interface (CLI) tools. [Read more...](Docs/list-cli-tools.md) |
| [list-dns-servers.ps1](Scripts/list-dns-servers.ps1) | Lists public DNS servers. [Read more...](Docs/list-dns-servers.md)
| [list-drives.ps1](Scripts/list-drives.ps1) | Lists all drives. [Read more...](Docs/list-drives.md) |
| [list-network-shares.ps1](Scripts/list-network-shares.ps1) | Lists all network shares of the local computer. [Read more...](Docs/list-network-shares.md) |
| [list-installed-software.ps1](Scripts/list-installed-software.ps1) | Lists the installed software (except Windows Store apps). [Read more...](Docs/list-installed-software.md)|

42
Scripts/check-dns-server.ps1
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@ -1,42 +0,0 @@
<#
.SYNOPSIS
Check DNS servers
.DESCRIPTION
This PowerShell script measures the availability and latency of public DNS servers and lists it.
.EXAMPLE
PS> ./check-dns-server
.LINK
https://github.com/fleschutz/PowerShell
.NOTES
Author: Markus Fleschutz | License: CC0
#>
function CheckDNSServer { param($Name, $IPv4Pri, $IPv4Sec)
$SW = [system.diagnostics.stopwatch]::startNew()
$null = (nslookup fleschutz.de $IPv4Pri 2>$null)
[int]$Elapsed1 = $SW.Elapsed.TotalMilliseconds
$SW = [system.diagnostics.stopwatch]::startNew()
$null = (nslookup fleschutz.de $IPv4Sec 2>$null)
[int]$Elapsed2 = $SW.Elapsed.TotalMilliseconds
New-Object PSObject -Property @{ Name=$Name; IPv4="$IPv4Pri / $IPv4Sec"; Latency="$Elapsed1 / $Elapsed2 ms" }
}
function ListDNSServer {
Write-Progress "Loading Data/dns-server-list.csv..."
$Table = Import-CSV "$PSScriptRoot/../Data/dns-server-list.csv"
Write-Progress "Measuring latency..."
foreach($Row in $Table) {
CheckDNSServer $Row.NAME $Row.IPv4_PRI $Row.IPv4_SEC
}
Write-Progress -completed " "
}
try {
ListDNSServer | Format-Table -property @{e='Name';width=50},@{e='IPv4';width=32},@{e='Latency';width=15}
exit 0 # success
} catch {
"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
exit 1
}

47
Scripts/list-dns-servers.ps1 Executable file
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@ -0,0 +1,47 @@
<#
.SYNOPSIS
Lists DNS servers
.DESCRIPTION
This PowerShell script measures the latency of public and free DNS servers and lists it.
.EXAMPLE
PS> ./list-dns-servers
Provider IPv4 Latency
-------- ---- -------
AdGuard DNS 94.140.14.14 / 94.140.15.15 222 / 205 ms
...
.LINK
https://github.com/fleschutz/PowerShell
.NOTES
Author: Markus Fleschutz | License: CC0
#>
function CheckDNSServer { param($Provider, $IPv4Pri, $IPv4Sec)
$SW = [system.diagnostics.stopwatch]::startNew()
$null = (nslookup fleschutz.de $IPv4Pri 2>$null)
[int]$Elapsed1 = $SW.Elapsed.TotalMilliseconds
$SW = [system.diagnostics.stopwatch]::startNew()
$null = (nslookup fleschutz.de $IPv4Sec 2>$null)
[int]$Elapsed2 = $SW.Elapsed.TotalMilliseconds
New-Object PSObject -Property @{ Provider=$Provider; IPv4="$IPv4Pri / $IPv4Sec"; Latency="$Elapsed1 / $Elapsed2 ms" }
}
function List-DNS-Servers {
Write-Progress "Loading Data/public-dns-servers.csv..."
$Table = Import-CSV "$PSScriptRoot/../Data/public-dns-servers.csv"
Write-Progress "Measuring latency..."
foreach($Row in $Table) {
CheckDNSServer $Row.PROVIDER $Row.IPv4_PRI $Row.IPv4_SEC
}
Write-Progress -completed " "
}
try {
List-DNS-Servers | Format-Table -property @{e='Provider';width=50},@{e='IPv4';width=32},@{e='Latency';width=15}
exit 0 # success
} catch {
"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
exit 1
}