 | Chapter 10: Security and Network Monitoring |  |
http://www.securityfocus.com is one of the best security-related sites on the Net. In addition to being home to some of the top security-related mailing lists, this site also has a superb free tools library. Many tripwire-like tools can be found in the "auditing, file integrity" portion of this library.
MacPerl:Power and Ease, by Vicki Brown and Chris Nandor (Prime Time Freeware, 1998). This book plus the perlport manual page were the major sources for the stat( ) information table in the first section of this chapter.
RFC1321:The MD5 Message-Digest Algorithm, R. Rivest, 1992.
http://www.tripwire.com/tripwire used to be the canonical free tool for filesystem change detection. It has since been commercialized, but the older free versions are still available.
There are approximately 60 active RFCs with SNMP in their titles (and about 100 total which mention SNMP). Here are just the RFCs we reference in this chapter or in Appendix E, "The Twenty-Minute SNMP Tutorial".
RFC1157:A Simple Network Management Protocol (SNMP), J. Case, M. Fedor, M. Schoffstall, and J. Davin, 1990.
RFC1213:Management Information Base for Network Management of TCP/IP-based internets:MIB-II, K. McCloghrie and M. Rose, 1991.
RFC1493:Definitions of Managed Objects for Bridges, E. Decker, P. Langille, A. Rijsinghani, and K. McCloghrie, 1993.
RFC1573:Evolution of the Interfaces Group of MIB-II, K. McCloghrie and F. Kastenholz, 1994.
RFC1905:Protocol Operations for Version 2 of the Simple Network Management Protocol (SNMPv2), J. Case, K. McCloghrie, M. Rose, and S. Waldbusser, 1996.
RFC1907:Management Information Base for Version 2 of the Simple Network Management Protocol (SNMPv2), J. Case, K. McCloghrie, M. Rose, and S. Waldbusser, 1996.
RFC2011:SNMPv2 Management Information Base for the Internet Protocol using SMIv2, K. McCloghrie, 1996.
RFC2012:SNMPv2 Management Information Base for the Transmission Control Protocol using SMIv2, K. McCloghrie, 1996.
RFC2013:SNMPv2 Management Information Base for the User Datagram Protocol using SMIv2, K. McCloghrie, 1996.
RFC2274:User-based Security Model (USM) for version 3 of the Simple Network Management Protocol (SNMPv3), U. Blumenthal and B. Wijnen, 1998.
RFC2275:View-based Access Control Model (VACM) for the Simple Network Management Protocol (SNMP), B. Wijnen, R. Presuhn, and K. McCloghrie, 1998.
RFC2578:Structure of Management Information Version 2 (SMIv2), K. McCloghrie, D. Perkins, and J. Schoenwaelder, 1999.
Here are some good general SNMP resources:
http://ucd-snmp.ucdavis.edu is the home of the UCD-SNMP project.
http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtmlis the location of Cisco's MIB files. Other vendors have similar sites.
http://www.snmpinfo.com is the home of the company SNMPinfo and David Perkins (an SNMP guru who actively posts to comp.protocols.snmp, and one of the authors of Understanding SNMP MIBs).
http://www.ibr.cs.tu-bs.de/ietf/snmpv3/ is an excellent resource on Version 3 of SNMP.
http://www.mrtg.org and http://www.munitions.com/~jra/cricket/ are the homes of find Multi Router Traffic Grapher (MRTG) and its descendant Cricket (written in Perl!), two good examples of how SNMP can be used to do long-term monitoring of devices.
Understanding SNMP MIBs, by David Perkins and Evan McGinnis (Prentice-Hall, 1996).
http://www.snmp.org is the home of the company SNMP Research. The "SNMP Framework" section of their site has some good references, including the comp.protocols.snmp FAQ.
Advanced Perl Programming, by Sriram Srinivasan (O'Reilly, 1997) has a good section on the creation of Perl modules.
http://www.bb4.com and http://www.kernel.org/software/mon/ are the homes of BigBrother and Mon, two good examples of packages that provide a general framework for monitoring real-time events (as opposed to the historical monitoring frameworks provided by MRTG and Cricket).
http://www.tcpdump.org is the home of libpcap and tcpdump.
RFC793:Transmission Control Protocol, J. Postel, 1981.
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