Windows

Checks

• https://azega.org/list-open-ports-using-powershell/

# List open ports and related IP-addresses
Get-NetTCPConnection

# "To show only the listening ports we need to filter for all items in the Listen state with the remote address of 0.0.0.0"
get-nettcpconnection | where {($_.State -eq "Listen") -and ($_.RemoteAddress -eq "0.0.0.0")}

# "You can add additional fields like the process ID for each port. Changing the fields from the default requires selecting each one you want and then piping to ft (format-table)."
get-nettcpconnection | where {($_.State -eq "Listen") -and ($_.RemoteAddress -eq "0.0.0.0")} | Select LocalAddress,LocalPort,RemoteAddress,RemotePort,State,OwningProcess | ft

# "This example will get the name of the process associated with each item."
get-nettcpconnection | where {($_.State -eq "Listen") -and ($_.RemoteAddress -eq "0.0.0.0")} | select LocalAddress,LocalPort,RemoteAddress,RemotePort,State,@{Name="Process";Expression={(Get-Process -Id $_.OwningProcess).ProcessName}} | ft

# Test the network-connection to a specific IP and port
Test-NetConnection -ComputerName 192.168.200.20 -InformationLevel "Detailed" -Port 443

Commands

# Open User Management
lusrmgr.msc

Network

# Add a route for a specific network
route add 192.168.15.0 mask 255.255.255.0 192.168.15.1

# Delete a route for a specific network
route delete 192.168.15.0 mask 255.255.255.0 192.168.15.1