monitoring websites

[jwu]

I'm trying to monitor websites, I am running into issues where there is no data that is drawn from the website.
I tried internal and external IP.
My question is:
do I use an external/internal IP?
listening port? is this for that port on the NagiosNA server that listens? or is the port I'm listening to from the website?
is there any firewall or switch configuration needed?

[tmcdonald]

I'm a bit confused here. Are you trying to get netflow data from a website? Or are you just trying to monitor a website in general? I highly doubt a website is going to broadcast *flow data to the Internet, and if you just want to monitor you should be using Core or XI and not NNA.

[jwu]

I'm trying to monitor the netflow. I already have this website monitored with XI, this website got attacked recently, so we're trying to use the NA.

[tmcdonald]

If the website is internal to your network and you have a valid route between it and your NA server, you will need to run something like fprobe on the web server in order to broadcast your network data. If there is no netflow data on the network, NNA will have nothing to read.

[jwu]

what protocol is NNA using to retrieve the netflow information?

[tmcdonald]

Netflow itself is the protocol. I'm not quite sure what you are asking here. Netflow packets are sent from the host to NNA.

http://en.wikipedia.org/wiki/NetFlow