netstat command (Network statistics)

Display the network statistics

Syntax:

netstat -r

netstat -i

Displays the contents of different system data pertained to network parameters.

“-r” parameter displays system routing tables: 

Flags for specific routes have the following meaning:

• "U" - this routing table element is currently active
• "H" - this route leads to a host. If this flag is not set, the route goes to a network
• "D" - the route has been created using the "icmp redirect" protocol
• "M" - the route has been modified using the "icmp redirect" protocol
• "G" - the route is connected to a host. If this flag is not set, it is considered that the route destination is directly connected
• "S" - static route, set by the operator using a "route add" command
• "1" - pseudostatic route, set as a result of a "rip static" command
• "L" - the route points to a directly connected host (for such a route an APR request may be performed)
• "C" - when using this route, more specific routes may be created (e.g. using the "L" flag).

“-i” parameter displays the information on each network interface in the system: