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Scans

IP

Linux

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for i in {1..254} ;do (ping -c 1 172.16.139.$i | grep "bytes from" &) ;done

Another way:

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for i in $(seq 1 254); do host 172.16.5.$i; done | grep -v "not found"

PowerShell

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1..254 | % {"172.16.9.$($_): $(Test-Connection -count 1 -comp 172.16.9.$($_) -quiet)"}

1..254 | % {"172.16.6.$($_): $(Test-Connection -count 1 -comp 172.16.6.$($_) -quiet)"}


1..100 | % {"172.16.9.$($_): $(Test-Connection -count 1 -comp 172.16.9.$($_) -quiet)"}

Ports

Linux

TCP

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nc -nvv -w 1 -z 192.168.50.152 3388-3390

UDP 

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nc -nv -u -z -w 1 192.168.50.149 120-123

Powershell:

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foreach ($ports in 1..1024) {If (($a=Test-NetConnection 10.10.12.123 -Port $port -WarningAction SilentlyContinue).tcpTestSucceeded -eq $true){ "TCP port $port is open}}

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Test-NetConnection -Port 445 192.168.50.151

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1..1024 | % {echo ((New-Object Net.Sockets.TcpClient).Connect("192.168.50.151", $_)) "TCP port $_ is open"} 2>$null
Last update: 2025-12-14
Created: October 11, 2025 15:46:15