Mac OS X in a Nutshell

Name

netstat

Synopsis

netstat [options]

Shows network status. For all active sockets, prints the protocol, the number of bytes waiting to be received, the number of bytes to be sent, the port number, the remote address and port, and the state of the socket.

Options

-A

Show the address of any protocol control blocks associated with sockets.

-a

Show the state of all sockets, including server sockets (not displayed by default).

-b

Modify the -i option display by providing bytes in and bytes out.

-d

Modify the -i and -w options’ display by providing dropped packets.

-f address_family

Limit displayed information to the specified address_family where legitimate families are [ inet, inet6, unix ].

-g

Display group address (multicast routing) information.

-I interface

Display information for the specified interface.

-i

Display state and packet transfer statistics for all auto-configured interfaces.

-L

Display curerent listen queue sizes.

-l

Modifies display of -r option to include mtu information. As a standalone option, prints full IPv6 address.

-M core

Extract information from specified core file instead of /dev/kmem.

-m

Display statistics related to network memory management routines

-N system

Extract the name list from specified system instead of /kernel.

-n

Display network addresses using dotted octet notation (i.e., 172.24.30.1 ).

-p protocol

Display statistics about protocol (see /etc/protocols for names and aliases).

-r

Display routing tables.

-s[s]

Display per protocol statistics. Use ...