need statistical analysis for NAT traffic

[Mohamed Hussein Ragab]

Hi,   I have a network with virtual IP addresses connecting to the internet through a debian woody gateway running ipfilters, kernel 2.4.18 with the required source Natting rule (iptables)   All working fine   I need to be able to produce dynamic statistics every 5 minutes indicating the uplink traffic utilization grouped by (each host in the internal network) Can you please guide me on this issue.   Thanks Mohamed