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12 PING
13 IPCONFIG
14 NETSTAT
15 ROUTE
16 NSLOOKUP
17 ARP
18 TRACERT
19 TELNET
20 NET Commands
   
  .

NAREDBENO SUČELJE (Command Prompt line)

NETSTAT

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Program netstat prikazuje statistike protokola te trenutno aktivne TCP/IP konekcije
Isti se upisuje u naredbenom promptu (Command Prompt line)

Netstat

Displays active TCP connections, ports on which the computer is listening, Ethernet statistics, the IP routing table, IPv4 statistics (for the IP, ICMP, TCP, and UDP protocols), and IPv6 statistics (for the IPv6, ICMPv6, TCP over IPv6, and UDP over IPv6 protocols). Used without parameters, netstat displays active TCP connections.

Syntax

netstat [-a] [-e] [-n] [-o] [-p Protocol] [-r] [-s] [Interval]

Parameters

-a

Displays all active TCP connections and the TCP and UDP ports on which the computer is listening.

-e

Displays Ethernet statistics, such as the number of bytes and packets sent and received. This parameter can be combined with -s.

-n

Displays active TCP connections, however, addresses and port numbers are expressed numerically and no attempt is made to determine names.

-o

Displays active TCP connections and includes the process ID (PID) for each connection. You can find the application based on the PID on the Processes tab in Windows Task Manager. This parameter can be combined with -a, -n, and -p.

-p Protocol

Shows connections for the protocol specified by Protocol. In this case, the Protocol can be tcp, udp, tcpv6, or udpv6. If this parameter is used with -s to display statistics by protocol, Protocol can be tcp, udp, icmp, ip, tcpv6, udpv6, icmpv6, or ipv6.

-s

Displays statistics by protocol. By default, statistics are shown for the TCP, UDP, ICMP, and IP protocols. If the IPv6 protocol for Windows XP is installed, statistics are shown for the TCP over IPv6, UDP over IPv6, ICMPv6, and IPv6 protocols. The -p parameter can be used to specify a set of protocols.

-r

Displays the contents of the IP routing table. This is equivalent to the route print command.

Interval

Redisplays the selected information every Interval seconds. Press CTRL+C to stop the redisplay. If this parameter is omitted, netstat prints the selected information only once.

/?

Displays help at the command prompt.

Remarks

  • Parameters used with this command must be prefixed with a hyphen (-) rather than a slash (/).
  • Netstat provides statistics for the following:
    • Proto

The name of the protocol (TCP or UDP).

    • Local Address

The IP address of the local computer and the port number being used. 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. If the port is not yet established, the port number is shown as an asterisk (*).

    • Foreign Address

The IP address and port number of the remote computer to which the socket is connected. The names that corresponds 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 (*).

    • (state)

Indicates the state of a TCP connection. The possible states are as follows:

CLOSE_WAIT
CLOSED
ESTABLISHED
FIN_WAIT_1
FIN_WAIT_2
LAST_ACK
LISTEN
SYN_RECEIVED
SYN_SEND
TIMED_WAIT

For more information about the states of a TCP connection, see RFC 793.

  • This command is available only if the Internet Protocol (TCP/IP) protocol is installed as a component in the properties of a network adapter in Network Connections.

Examples

To display both the Ethernet statistics and the statistics for all protocols, type the following command:

netstat -e -s

To display the statistics for only the TCP and UDP protocols, type the following command:

netstat -s -p tcp udp

To display active TCP connections and the process IDs every 5 seconds, type the following command:

nbtstat -o 5

To display active TCP connections and the process IDs using numerical form, type the following command:

nbtstat -n -o

Formatting legend

Format

Meaning

Italic

Information that the user must supply

Bold

Elements that the user must type exactly as shown

Ellipsis (...)

Parameter that can be repeated several times in a command line

Between brackets ([])

Optional items

Between braces ({}); choices separated by pipe (|). Example: {even|odd}

Set of choices from which the user must choose only one

Courier font

Code or program output

 

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