If any of you are familiar with mailgraph for Postfix-based mail
servers, I've created something similar for Fedora DS. fdsgraph tails
the access log and creates rrdtool-based graphs of the number of
connections and operations, organized by connection security and op
type respectively. You can see some screenshots and find the tarball
at:
http://www.nebrwesleyan.edu/people/stpierre/fdsgraph/fdsgraph.html
Enjoy!
Chris St. Pierre
Unix Systems Administrator
Nebraska Wesleyan University