Informations:
Netstat command Shows network status.
Syntax
netstat [-a] [-n] [-v]
netstat [-g | -m | -p | -s | -f address_family ] [-n] [-P protocol]
netstat [ -i ] [ -I interface ] [ interval ]
netstat -r [-a] [-n] [-v ]
netstat -M [-n] [-s ]
netstat -D [ -I interface ]
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-a
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Show the state of all sockets and all routing table entries; normally, sockets used by server processes are not shown and only interface, host, network, and default routes are shown.
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-n
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Show network addresses as numbers. netstat normally displays addresses as symbols. This option may be used with any of the display formats.
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-v
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Verbose. Show additional information for the sockets and the routing table.
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-g
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Show the multicast group memberships for all interfaces.
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-m
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Show the STREAMS statistics.
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-p
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Show the address resolution (ARP) tables.
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-s
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Show per-protocol statistics. When used with the -M option, show multicast routing statistics instead.
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-i
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Show the state of the interfaces that are used for TCP/IP traffic.
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-r
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Show the routing tables.
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-M
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Show the multicast routing tables. When used with the -s option, show multicast routing statistics instead.
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-d
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Show the state of all interfaces that are under Dynamic Host Configuration Protocol (DHCP) control.
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-D
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Show the status of DHCP configured interfaces.
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-f address_family
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imit statistics or address control block reports to those of the specified address_family, which can be one of:
inet For the AF_INET address family
unix For the AF_Unix address family
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-P protocol
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Limit display of statistics or state of all sockets to those applicable to protocol.
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- I interface
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Show the state of a particular interface. interface can be any valid interface such as ie0 or
le0.
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Examples:
netstat
Displays generic net statistics of the host you are currently connected to.
netstat -an
Shows all connections to the server including the source and destination ips and ports if you have proper permissions.
netstat -rn
Displays routing table for all ips bound to the server.
netstat -an |grep :80 |wc -l
Display all active connections on port 80.
