Nagios Support Forum

bwallace wrote:Thanks, definitely lets us know what you find out.

Hi bwallace,

I disabled SELINUX, so that no policy can block NNA. but it is still not detecting netflow.

I still believe that there is something wrong with nfdump/nfcapd, but reinstall doesn't solve that issue.

do you have any other ideas?

On the NNA server, do you do have your firewall/IP tables/SE Linux rules open to this traffic? Reason I ask is that a tcpdump captures the packets before the kernel sees it. Since you've already confirmed via a tcpdump that this traffic is getting to the NNA server, then I'm rather suspicious of th...

NNA doesn't show anything. I created a source on port 9995 but the captured nfcapd files have a size of 276 bytes, which means they are empty. so nfdump on these nfcapd-files says: no matched flows It seems like nfcapd/nfdump, can't extract the netflow data. I tried to update and recompile nfdump, b...