Hello! Well, I'm looking for a tool that can help me with a question: make reports/graphics of the traffic passing through some firewalls (Linux gateways, using iptables and others tools). Yes, I know about MRTG and some others, but it makes graphs of the entire traffic, and can't explain more detailed. I need to explicit the traffic: - smtp traffic; - web (http/https) traffic; - gree traffic; - udp ; - icmp; - etc.... Ok, it can work in the concept of ports, and don't need to open the packets passing through to know what type of TCP packet is it (example: TCP 80 is http, TCP 25 is SMTP). Searching, googling,...., I encountered a very good site (Stanford University) that collected many tools for monitoring, and probably anyone posted it here, but I'll do it again: http://www.slac.stanford.edu/ But there looks like that doesn't have what I'm looking for. And tools like iptraf, don't help me, because I need graphs, beauty graphs ;). Anyone can help me with this question?! Thanks for all! Rafael Marangoni