New-NetFirewallRule: why Get-NetFirewallRule shows no ports
New-NetFirewallRule creates an inbound or outbound Windows Firewall rule and attaches it to a policy store, which is the scripted replacement for…
Ports
Enter-PSSession and WinRM: why -ComputerName is not remoting
Enter-PSSession and WinRM in practice: which PowerShell answers the call, why remote objects lose their methods, and why local variables arrive empty.
Test-NetConnection in Windows: the PowerShell replacement for ping, telnet and tracert
Test-NetConnection is the built-in PowerShell cmdlet that answers the three questions a sysadmin asks when something on the network stops working: can…
nmap for Windows: network scanning without installing Linux
Network scanning on Windows usually means installing something or switching to Linux. nmap breaks that assumption - it runs natively on Windows,…
How to check open ports on Windows: built-in tools vs Port Checker
Checking whether a port is open - on the local machine or on a remote server - comes up in almost every…
NETSTAT command in Windows
When a port is unreachable, a service is not responding, or something is holding a connection open, netstat is the first command…