Crashing cFP with http port scan?

[Matthew_Williams]

cFP-2010 running 6.1 RT, embedded application communicating via vi server to host #1. Embedded webserver is enabled but serving (properly) only default pages.

Scan of port 80 causes cFP module to stop responding to port 3363 requests and crash. Seems to reboot spontaneously about half the time, other times it locks up with the red status led blinking 18 times then pausing.

Port scan is performed from host #2 using nmap 3.50. Command is:

nmap -A -p 80 192.168.7.24 -v

The specific request that is causing the problem appears to be 'OPTIONS / HTTP/1.0'. The response generated is 'HTTP/1.0 501 Service Temporarily Overloaded'. No 3363 requests are responded to after this and the embedded application stops.

Enabling webserv
er log did not make any difference and nothing was recorded in the log. Adding a delay to the scan did not make a difference.

Any thoughts or suggestions? We anticipate using the embedded web server so turning it off isn't really an option. Thanks.

Matt

[Kristi_P]

Hello Matt,

Is your compact FieldPoint system on your local subnet, or is it on a different layer of your network? Do you see the same issue when it's on your subnet? Can you verify that your RT Options are set properly for the webserver? While targeted to your FieldPoint system, go to Tools->RT Target Options and then browse through each Webserver configuration area, checking that your VI is visible and that your computer has network access to your controller.

If you can verify that the webserver is configured properly, let's try to narrow down whether the problem is due to an issue with the network or if it's the software on the controller.

Please post a reply if the problem still exists.

Regards,

Kristi H
National Instruments

[Matthew_Williams]

>Is your compact FieldPoint system on your local subnet, or is it on a different layer of your network?
Do you see the same issue when it's on your subnet?

cFP is on the local subnet; haven't tried a different network.

>Can you verify that your RT Options are set properly for the webserver? While targeted to your FieldPoint system, go to Tools->RT Target Options and then browse through each Webserver configuration area, checking that your VI is visible and that your computer has network access to your controller.

I'm not actually browsing to any .vis yet. We're using just the default 'Fieldpoint Embedded Webserver' page that shows the IP, mac, S/N, etc. Requests for the main page and subsequent links all work properly. There are no
restrictions on access for either the webserver or tcp.

>If you can verify that the webserver is configured properly, let's try to narrow down whether the problem is due to an issue with the network or if it's the software on the controller.

>Please post a reply if the problem still exists.

Thanks for your help.

Matt