Serious Network Problem

[labmaster]

During NI Inermediate II course,
 My computer showed a serious network problem.

There is no problem to open a webpage using the Internet Explorer.

In LV8, I can't use Remote Panel connetion.

Using a cross lan cable, I tried but failed to connect to another computer directly.

In UTP lessons, My computer can't receive a multicasting signal.

Would you please consider my computer?

Thank you in advanced.

Port scan result after LV launching.
=====================

Proto  Local Address          Foreign Address        State
 TCP    lsjun-notebook:http    lsjun-notebook:0       LISTENING
 TCP    lsjun-notebook:epmap   lsjun-notebook:0       LISTENING
 TCP    lsjun-notebook:microsoft-ds  lsjun-notebook:0       LISTENING
 TCP    lsjun-notebook:1111    lsjun-notebook:0       LISTENING
 TCP    lsjun-notebook:3363    lsjun-notebook:0       LISTENING
 TCP    lsjun-notebook:3580    lsjun-notebook:0       LISTENING
 TCP    lsjun-notebook:6060    lsjun-notebook:0       LISTENING
 TCP    lsjun-notebook:1029    lsjun-notebook:0       LISTENING
 TCP    lsjun-notebook:1112    localhost:3580         TIME_WAIT
 TCP    lsjun-notebook:3580    localhost:kpop         TIME_WAIT
 TCP    lsjun-notebook:3580    localhost:1110         TIME_WAIT
 TCP    lsjun-notebook:3580    localhost:1113         TIME_WAIT
 TCP    lsjun-notebook:3580    localhost:1114         TIME_WAIT
 TCP    lsjun-notebook:3580    localhost:1115         TIME_WAIT
 TCP    lsjun-notebook:3580    localhost:1116         TIME_WAIT
 TCP    lsjun-notebook:3580    localhost:1117         TIME_WAIT
 TCP    lsjun-notebook:3580    localhost:1118         TIME_WAIT
 TCP    lsjun-notebook:netbios-ssn  lsjun-notebook:0       LISTENING
 TCP    lsjun-notebook:1107    203.254.160.68:30114   ESTABLISHED
 TCP    lsjun-notebook:1108    203.254.160.68:http    TIME_WAIT
 TCP    lsjun-notebook:1119    210.98.20.45:netbios-ssn  TIME_WAIT
 UDP    lsjun-notebook:microsoft-ds  *:*
 UDP    lsjun-notebook:isakmp  *:*
 UDP    lsjun-notebook:1031    *:*
 UDP    lsjun-notebook:2343    *:*
 UDP    lsjun-notebook:4500    *:*
 UDP    lsjun-notebook:5000    *:*
 UDP    lsjun-notebook:5001    *:*
 UDP    lsjun-notebook:5002    *:*
 UDP    lsjun-notebook:5003    *:*
 UDP    lsjun-notebook:6000    *:*
 UDP    lsjun-notebook:6001    *:*
 UDP    lsjun-notebook:6002    *:*
 UDP    lsjun-notebook:6003    *:*
 UDP    lsjun-notebook:6004    *:*
 UDP    lsjun-notebook:6005    *:*
 UDP    lsjun-notebook:6006    *:*
 UDP    lsjun-notebook:58431   *:*
 UDP    lsjun-notebook:58432   *:*
 UDP    lsjun-notebook:ntp     *:*
 UDP    lsjun-notebook:1900    *:*
 UDP    lsjun-notebook:ntp     *:*
 UDP    lsjun-notebook:netbios-ns  *:*
 UDP    lsjun-notebook:netbios-dgm  *:*
 UDP    lsjun-notebook:1900    *:*

[DuffmanSays]

Hello labmaster,

It sounds to me like your system is capable of connecting to the internet, but that it is unable to do much beyond this. It appears that these applications that you are trying to build in LabVIEW are exposing some of the networking limitations that exist on your machine. Unfortunately I do not know what to make of the port scan that you have provided. There can be many causes of networking issues that you would want to troubleshoot with your IT department or network card manufacturer. What I can do is to provide you with a list of ports used by National Instruments software. You will want to be sure that no packets are being blocked on these ports. Also keep in mind that when using TCP or UDP communication, you can specify the ports which you are using. Also, as a starting point, you may want to disable any antivirus software or firewalls that might hinder communication. I hope that this will at least get you started in figuring out some of these networking difficulties. Thanks,

Mike D.