diff --git a/docs/powershell.md b/docs/powershell.md
index 558827e..7ecd169 100644
--- a/docs/powershell.md
+++ b/docs/powershell.md
@@ -12,6 +12,13 @@ Get-LocalUser -Name 'Administrator' | Set-LocalUser -Password (ConvertTo-SecureS
 Rename-Computer -NewName 'DC01' -Restart -Force
 ```
 
+## Set-Networkcard-to-private
+Profil der Netzwerkkarte auf Privat umstellen (Firewall)
+> Comman: Set-NetConnectionProfile -InterfaceIndex [Index der Netzwerkkarte] -NetworkCategory "Private"
+```ruby
+Set-NetConnectionProfile -InterfaceIndex '3' -NetworkCategory 'Private'
+```
+
 ## IPv6-DHCP-abschalten
 > Command: Get-NetIPInterface -AddressFamily [IPv6/IPv4]
 ```ruby