Netstat -e : Displays ethernet statistics, such as the number of bytes and packets sent and received. (Windows XP, Windows Server 2003, and newer Windows operating systems not Microsoft Windows 2000 or older). Netstat -b : Displays the binary (executable) program’s name involved in creating each connection or listening port. Netstat -a : Displays all active connections and the TCP and UDP ports on which the computer is listening. Some parameters are exclusives to one operating system. Netstat admits several parameters preceded by a hyphen (-). For more information about the states of a TCP connection, see RFC 793. The possible states are as follows: CLOSE_WAIT, CLOSED, ESTABLISHED, FIN_WAIT_1, FIN_WAIT_2, LAST_ACK, LISTEN, SYN_RECEIVED, SYN_SEND, and TIME_WAIT. State: Indicates the state of a TCP connection. If the port is not yet established, the port number is shown as an asterisk (*).
The names that correspond to the IP address and the port are shown unless the -n parameter is specified. If the port is not yet established, the port number is shown as an asterisk.įoreign Address: The IP address and port number of the remote computer to which the socket is connected. An asterisk (*) is shown for the host if the server is listening on all interfaces. The name of the local computer that corresponds to the IP address and the name of the port is shown unless the -n parameter is specified. Local Address: The IP address of the local computer and the port number being used. Proto: The name of the protocol (TCP or UDP). The routing table for the local machine.Ethernet statistics, including bytes sent and received, directed and broadcast frames sent and received, discards, and errors.For example, netstat -a displays all connections and listening ports (for TCP and UDP). Either host names or IP addresses can be displayed. IP addresses and port numbers of TCP/IP connections, including client and server connections.
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