The simplest way - is to LOG packets using IPTABLES. My friends from Internet-provider are doing so.
Another way is to use proxy-servers (like SQUID). > Know this is a bit off subject but dose anybody know any good programs > to use for monitoring Megabytes per IP address. What i want to do is > have a LAN and be able to get data on how many MB each host downloaded > for billing purposes. >
