netstat

Command Overview

• netstat -a
  • Displays all current connections and listening ports on the system.
• netstat -t
  • Lists TCP connections.
• netstat -u
  • Lists UDP connections.
• netstat -at
  • Lists all TCP ports.
• netstat -au
  • Lists all UDP ports.
• netstat -r
  • Displays the routing table.
• netstat -l
  • Displays listening ports.
• netstat -lx
  • Lists Linux-specific listening ports.
• netstat -lp
  • Displays all listening ports (both TCP and UDP) along with process IDs and program names.
• netstat -s
  • Displays statistics by protocol.

• **netstat -an

  grep ‘:[port number]’**

  • Finds a specific port number.
• netstat -nao
  • Shows listening ports and active TCP connections.
• netstat -naob
  • Displays process names instead of process IDs (requires Administrator privileges).

Source

• linux man: netstat
• Netstat Command in Linux - 28 Commands with Examples
• isc.sans.edu: Netstat, but Better and in PowerShell