Link to home
Start Free TrialLog in
Avatar of RenitlahHelp
RenitlahHelpFlag for United States of America

asked on

NETSTAT Question

Hi,

If I do the following:

Check who is ports/connected:
1.  Open START>RUN>CMD
2.  Type this: "netstat -a" and Press ENTER
3.  To Save who is connected, you could save to a text file: netstat -an
|find /i "listening" > c:\currentcons.txt

...then I get a result list like below....what lines tell me who is connected to the computer?  I want to use this command on an IIS server to see who is connected.  What tells me who is connected or if anyone is connected?

C:\>netstat -a

Active Connections

  Proto  Local Address          Foreign Address        State

  TCP    thaltin-p-mkt:4294     thaltin-p-mkt.dex.dexmedia.com:0  LISTENING
  TCP    thaltin-p-mkt:4306     thaltin-p-mkt.dex.dexmedia.com:0  LISTENING
  TCP    thaltin-p-mkt:4576     thaltin-p-mkt.dex.dexmedia.com:0  LISTENING
  TCP    thaltin-p-mkt:4827     thaltin-p-mkt.dex.dexmedia.com:0  LISTENING
  TCP    thaltin-p-mkt:dex_dev1  thaltin-p-mkt.dex.dexmedia.com:0  LISTENING
  TCP    thaltin-p-mkt:ms-sql-s  localhost:1151         TIME_WAIT
  TCP    thaltin-p-mkt:1437     localhost:1151         TIME_WAIT
  TCP    thaltin-p-mkt:1440     localhost:1151         TIME_WAIT
  TCP    thaltin-p-mkt:netbios-ssn  thaltin-p-mkt.dex.dexmedia.com:0  LISTENING
  TCP    thaltin-p-mkt:netbios-ssn  dexdenp01.dex.uswest.com:4706  ESTABLISHED
  TCP    thaltin-p-mkt:3044     denpds01.dexmedia.com:402  ESTABLISHED
  TCP    thaltin-p-mkt:4290     thaltin-p-mkt.dex.dexmedia.com:0  LISTENING
  TCP    thaltin-p-mkt:4290     denpvps02.dexmedia.com:netbios-ssn  ESTABLISHED
  TCP    thaltin-p-mkt:4294     dexdenpdc06.dexmedia.com:17047  ESTABLISHED
  UDP    thaltin-p-mkt:401      *:*
  UDP    thaltin-p-mkt:402      *:*
  UDP    thaltin-p-mkt:407      *:*
  UDP    thaltin-p-mkt:microsoft-ds  *:*
  UDP    thaltin-p-mkt:isakmp   *:*
  UDP    thaltin-p-mkt:1026     *:*
  UDP    thaltin-p-mkt:1027     *:*
  UDP    thaltin-p-mkt:1028     *:*
  UDP    thaltin-p-mkt:4609     *:*
  UDP    thaltin-p-mkt:4633     *:*
  UDP    thaltin-p-mkt:ntp      *:*
  UDP    thaltin-p-mkt:netbios-ns  *:*
  UDP    thaltin-p-mkt:netbios-dgm  *:*
  UDP    thaltin-p-mkt:1900     *:*

C:\>THANKS!!
ASKER CERTIFIED SOLUTION
Avatar of InteraX
InteraX
Flag of United Kingdom of Great Britain and Northern Ireland image

Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
http://www.microsoft.com/windows2000/techinfo/reskit/en-us/default.asp?url=/windows2000/techinfo/reskit/en-us/cnet/cnbd_trb_dnke.asp

******************************************************************
Netstat
Displays protocol statistics and current TCP/IP network connections. This command is available only if the TCP/IP protocol has been installed.

netstat [-a] [-e] [-n] [-s] [-p protocol] [-r] [interval]

Parameters

-a

Displays all connections and listening ports. Server connections are normally not shown.

-e

Displays Ethernet statistics. This may be combined with the -s option.

-n

Displays addresses and port numbers in numerical form (rather than attempting name look-ups).

-s

Displays per-protocol statistics. By default, statistics are shown for TCP, UDP, ICMP, and IP. The -p option can be used to specify a subset of the default.

-p protocol

Shows connections for the protocol specified by protocol; protocol can be tcp or udp. If used with the -s option to display per-protocol statistics, protocol can be tcp, udp, icmp, or ip.

-r

Displays the contents of the routing table.

interval

Redisplays selected statistics, pausing interval seconds between each display. Press CTRL+B to stop redisplaying statistics. If this parameter is omitted, netstat prints the current configuration information once.

******************************************************************
Inter,

what OS are you referring to here?
RenitlahHelp,

Oops. Sorry. Too used to Win XP. However the explantion of the Established and Time_Wait statements in the output are still the same.

The Time_Wait state will exist for 4 minutes. This can be adjusted in the registry.