Specifications
hg-c.fm
A31003-H3580-M103-2-76A9, 01-2009
HiPath 3000/5000 V8 - HG 1500 V8, Administrator Documentation
C-7
Nur für den internen Gebrauch
WAN/LAN Management
Utility Programs for TCP/IP Diagnostics
A computer can be both a client and a server at the same time. This is the case, for example,
where the local computer is connected to its own server. This is possible using the loopback
interface 127.0.0.1. If, for example, a Telnet server is running on the local computer, a Telnet
session can be opened on the local computer using the command telnet localhost.
<Proto> Indicates the protocol used for the communication. In this case, Win-
dows only distinguishes between TCP and UDP. Unfortunately, cer-
tain servers which only operate via a single protocol are displayed
both as TCP and as UDP servers. This prevents accurate determi-
nation of the actual protocol in use.
<Local address> This indicates the local address which has established a connection
or is listening for a connection. The local address and the remote ad-
dress are displayed in the format
<IP address>:<Port number>.
<Remote address> This indicates the remote address which has established a connec-
tion or to which a connection has been established.
<Status> Shows the current status of the following connections:
ESTABLISHED The local computer has set up a connection to a server. In this case
the local computer is a client.
LISTENING The local computer is ready to accept a connection. In this case the
local computer is a server.
SYN_SENT The local computer signals to the server that it would like to establish
a connection.
SYN_RECEIVED The local computer where the server is running has received a
"SYN_SENT" signal, that is the client would like a connection to be
established.
FIN_WAIT_1 The local computer would like to clear down the connection to the
server.
TIME_WAIT The local computer is waiting for server confirmation that the connec-
tion is to be terminated.
CLOSE_WAIT The local computer where the server is running has received a
"FIN_WAIT_1" signal, that is the client would like a connection to be
cleared down.
FIN_WAIT_2 The local computer has received confirmation from the server to
clear down the connection.
LAST_ACK The server has sent confirmation that the connection is to be cleared
down.
CLOSED The server has received client confirmation that the connection has
been cleared down.