IP Traffic Volume: Logs (counts) in- & outgoing bytes through network device(s) using kernel iptables. Highly configurable as to which bytes are logged, e.g. to/from specific ports or ip-addresses. Data displayed in html via cgi or plain ascii to console
kvolmet is a linux/kde utility to monitor transmitted IP traffic relative to a fixed monthly basis. The utility is intended for users having a subscription for a volume limited internet flatrate (respectively for those wishing to subscribe to one).
A perl script which allows parsing of syslog traffic. Output is sent to different files and alerts can be triggered on 'regex' match. Ideal for high volume syslog sites or those with a central syslog server