diff --git a/CheckGateway.ps1 b/CheckGateway.ps1
new file mode 100644
index 0000000..1df92fb
--- /dev/null
+++ b/CheckGateway.ps1
@@ -0,0 +1,28 @@
+$IP = (Get-WmiObject Win32_NetworkAdapterConfiguration | Where-Object {$_.IPEnabled}).DefaultIPGateway
+$MACAddressList = (Get-NetNeighbor -State Reachable)
+foreach ($item in $MACAddressList) {
+$AdresseIP = $item.IPAddress
+$AdresseMAC = $item.LinkLayerAddress
+if ($IP -contains $AdresseIP){$GatewayMac = $AdresseMAC ; $GatewayIP = $AdresseIP}
+}
+
+
+$PublicIP = ((Resolve-DnsName -Name myip.opendns.com -Server resolver1.opendns.com).IPAddress)
+
+$MacFreebox = "F4-CA-E5","00-07-CB","00-24-D4","14-0C-76","34-27-92","68-A3-78","70-FC-8F","8C-97-EA","E4-9E-12"
+$MacLivebox = "00-37-B7"
+$MacApple = "BC-B8-63"
+$MacXiaomi = "E0-CC-F8"
+$MacFortinet = "08-5B-0E"
+
+$MacSplit = $GatewayMac -split "-"
+$MacPrefix = $MacSplit[0] + "-" + $MacSplit[1] + "-" + $MacSplit[2]
+
+$Router = (Invoke-WebRequest -Uri "https://api.macvendors.com/$MacPrefix").Content
+
+$ShodanLink = "https://api.shodan.io/shodan/host/" + $PublicIP + "?key=9r6vVczYqYGR9F3WADASttMPt6fqK2Mm"
+$Shodan = Invoke-RestMethod -uri $ShodanLink
+$ISP = $Shodan.isp
+if ($Router -eq ""){"Passerelle de marque inconnue ($GatewayMac). `nIP locale passerelle : $AdresseIP. `nIP publique : $PublicIP (FAI : $ISP)."}
+else{
+Write-Host "Passerelle : $Router ($GatewayMac). `nIP locale passerelle : $AdresseIP. `nIP publique : $PublicIP (FAI : $ISP)."}
\ No newline at end of file