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Nprobe should it work?

Hi,

I have been trialling scrutinizer because we want to see the packets coming in from 3750's and these are not supported

under netflow. You can put span ports and plug a laptop into it and the Nprobe software will convert the original packets into

netflow format. This is then sent to the Scrutinizer module on the server and you can see the application traffic etc.

Solarwinds said that this should working using the Netflow module but I either get an error message saying that netflow traffic is seen on an unmanaged interface on the laptop (but i am monitoring all the interfaces) or it does not see any traffic.

If the laptop is pushing netflow traffic to the netflow module I would think that it should see this and it should work.

Anyone any knowledge on this?

Thanks

Sam

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Accepted answers

Martin.Krivanek

NTA will keep flows if at least one interface is managed (there's an option in NTA settings - 'Allow monitoring of flows from unmanaged interfaces.'). So you can set one interface to 1 and the other to zero, then you should see flows on your loopback interface.

All comments

FormerMember

If anyone said that it would definitely work, they misspoke. It may or may not work. It's not something we officially support, so we've never tried it in-house. You are the first request for this feature. If we begin to see more demand, I'll consider adding it, at which point we'll make sure it works.

menz

I don't know if anyone else might want it but if they knew it would work I'm sure they would.

If it doesn't work then we will probably have to buy scrutinizer instead of the Netflow module which is

a bit of a shame because the functionality of the netflow module is much better.

Thanks

Sam

a1ex

I'd be interested in this functionality.

I'm trying to work around having our border router as a Sonicwall rather than Cisco.

Alternatively, you could support SW's exported log format, but I suspect that's a bit more work...

darryld

I have successfully used nprobe to collect info from a windows server and send it to NTA.

You need to set the -u and -Q parameters to fix the index number of the input and output devices