DansGuardian is a Web content filtering proxy that uses Squid to do all the fetching. It filters using multiple methods including, but not limited to, phrase matching, file extension matching, MIME type matching, PICS filtering, and URL/domain blocking. It has the ability to switch off filtering by certain criteria including username, domain name, source IP, etc. The configurable logging produces a log in an easy to read format. It has the option to only log text-based pages, thus significantly reducing redundant information (such as every image on a page).
LCDproc is a utility to drive one or more LCD (and LCD-like) devices attached to a host. It is comprised of a server, which uses a modular device driver system to control attached displays, and one or more clients to gather data as appropriate and send screen data to the server. The included client displays a multitude of system statistics (CPU/memory/disk usage, uptime, date and time, temperature, etc.). Multiple clients can connect to the server simultaneously, and clients can set priorities on the screens they provide to influence in what order items are displayed. This facility can also be used to "pop" critical screens (such as an entry from syslog from a log-watching client). All functionality is implemented in userland. Support for many display devices and several platforms (Linux, *BSD, and Solaris at least) is included.
log_analysis is a log file analysis engine that extracts relevant data for any of the recognised log messages and produces a summary that is much easier to read. It can be configured to recognize entirely new log types. log_analysis natively understands about 100 different kinds of syslog messages, as well as sulog and wtmp messages for Linux, Solaris, and OpenBSD. It also has optional continuous monitoring capabilities, with both text and GUI modes.
Monit is a utility for managing and monitoring processes, programs, files, directories, and devices on a Unix system. It conducts automatic maintenance and repair and can execute meaningful causal actions in error situations. It can be used to monitor files, directories, and devices for changes, such as timestamps changes, checksum changes, or size changes. It is controlled via an easy to configure control file based on a free-format, token-oriented syntax. It logs to syslog or to its own log file and notifies users about error conditions via customizable alert messages. It can perform various TCP/IP network checks, protocol checks, and can utilize SSL for such checks. It provides an HTTP(S) interface for access.
Secure Syslog is a cryptographically secure system logging tool for UNIX systems. Designed to replace the syslog daemon, ssyslog implements a cryptographic protocol called PEO-1 that allows the remote auditing of system logs. Auditing remains possible even if an intruder gains superuser privileges in the system, the protocol guarantees that the information logged before and during the intrusion process cannot be modified without the auditor (on a remote, trusted host) noticing.
MCS MyRoute helps diagnose connectivity problems with detailed network routing discovery and analysis, providing visibility to poor-performing networks and devices. It includes a Java applet that enables remote users to easily test connections from the MyRoute server. Essential diagnostic tools including traceroute, ping, reverse DNS, and whois are combined into a single graphical interface that analyzes Internet connections, reporting quick and essential data points for finding connectivity problems. An IP location database identifies the geographical location of IP addresses and Web servers, showing the path of an Internet connection on a global map.
qmailmrtg7 utilizes qmail and tcpserver/multilog's extensive logging capabilities to create mrtg graphs. It efficiently processes the logs (large sites with historical logs of over 100MB can be processed in a few seconds). For qmail it graphs remote/local delivery concurrency, queue size, messages process, bytes transferred, and success/failure delivery status. For tcpserver services like SMTP and POP, it graphs total connections and concurrency. For djbdns, it can graph dnscache and tinydns activity. For ClamAV, it graphs viruses found. For spamassassin it graphs spam emails found.
nsc (Nagios Console Monitor) is a curses-based console monitor for Nagios. It allows you to monitor Nagios services without the expense or availability of a GUI. nsc features realtime display of netsaint status, adjustable display layout, and coloring/highlighting for troubled items. It has a clean and simple display and usage, displays all essential Nagios service status information on a single screen, and should run anywhere with proper Perl::Curses support.
System Configuration Collector collects and classifies most of your Unix/Linux/BSD configuration data in flat files called snapshots. This allows changes in snapshots of consecutive runs to be detected. These changes are added to a logbook, which is helpful for administrators during troubleshooting and for auditors during audits. Snapshots and logbooks are also available in HTML format. All data can be send to an SCC server, where a Web interface provides access to summaries and supports comparing snapshots of different servers and searching of all data. A WMI-based Windows client is also available.
IPFC is software and a framework to monitor multiple types of agents in a heterogeneous distributed environment. Agents can implement logging of elements as diverse as packet filters (like netfilter, pf, ipfw, IP Filter, checkpoint FW1, etc.), NIDS (Snort, arpwatch, etc.), Web servers, and other general devices (from syslog-servers to embedded devices). It features log collection for different security "agents", dynamic log correlation possibilities, and easy extensibility due to the generic database and XML message formats used.