A co-worker just showed me samplicator. This tool looks to be just about a perfect solution what I was looking for. From the tool’s website: This simple program listens for UDP datagrams on a network port, and sends copies of these datagrams on to a set of destinations. Optionally, it can perform sampling, i.e. rather … Read more
Retrieving Network Usage Information from NetFlow Version 9 Records Netflow is a feature that was introduced on Cisco routers that give the ability to collect IP network traffic as it enters or exits an interface. By analyzing the data that is provided by Netflow a network administrator can determine things such as the source and … Read more
You should check IPT-NETFLOW, it seems exactly what you need implemented as a kernel module for IPTABLES. It is actively maintained and used succesfully in some ISP so should be good enough. Documentation could be better though (look into README file).