fprobe is a linux-based netflow probe that uses libpcap (as does tcpdump) and is already in the ubuntu universe repository. There is an ipv4-only iptables based version too called fprobe-ulog.
For collectors, it looks like the ones already available in ubuntu are nfcapd from nfdump and flow-capture from flow-tools. For analysis/alerts, cacti with the thold and flowview plugins might do the job. On 11/13/2014 09:09 AM, Eliezer Croitoru wrote: > Hey all, > > I have a tiny linux router based on ubuntu and sometimes I get a > massive load of UDP traffic because of one of the PCs in the network. > Usually I handle the situation with a strict block using iptables. > The main issue is to find it due to the load. > For now I am monitoring the traffic load using MRTG but it won't > notify me. > I can try to use nagios to monitor traffic load for a period of time > but before I start working on it I want another person opinion and > options. > > I have seen netflow in the past but never actually used it. > > Thanks in advance, > Eliezer >