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Netstat Cheat Sheet

This quick reference cheat sheet provides various for using netstat command.

Linux Command
Port
Utility
Network

Getting Started

Routing

Option Example
netstat -r Show routing table
netstat -rn Show routing table, don't resolve hosts

Networks

Option Example
netstat -i Show network interfaces
netstat -ie Show network interfaces extended info

Connections

Option Example
netstat -a All connections
netstat -at All TCP connections
netstat -au All UDP connections

Listening

Option Example
netstat -ltunp All Listening ports
netstat -ltn Listening TCP ports
netstat -lun Listening UDP ports
netstat -lx Listening Unix ports

Statistics

All connections on port 80

$ netstat -anp | grep :80

Netstat Help

$ netstat -h