Maintained by the Technical University of Braunschweig. It provides links to the RFCs and internet drafts, copies of clarifications and proposed changes posted by the working group, and links to vendors with SNMPv3 implementations. Maintained by the University of Twente. It is a good source of information on SNMP, including pointers to many public-domain implementations and lists of books and articles. The organization that grew from the computer emergency response team formed by the Defense Advanced Research Projects Agency.
Site provides good information on Internet security threats, vulnerabilities, and attack statistics.