A fail2ban lite. IPQ BDB is a netfilter userspace daemon that can block or mark IP packets according to iptables rules that issue the corresponding -j NFQUEUE, as well as a Berkeley database of bad IPv4 addresses. A log parser and a banning utility add entries to the database. An IP has to be caught a configurable number of times before being blocked. Transitions between blocked and non-blocked are faded using probabilities. A halving period governs IP rehabilitation.
Stager is a system for aggregating and presenting network statistics. Though tailored for using NetFlow data from the flow-tools package, it is generic and can be customized to present and process any kind of network statistics. The backend collects data with flow-tools and stores reports in a database, automatically handling the aggregation of hourly statistics into days, weeks, and months. The Web frontend presents data in tables, matrices, or plots. The reports are fully customizable, and their definitions are stored in the database.
Tanal is a Unix daemon that captures traffic packet size, source, destination, and times and saves this data into a native PostgreSQL or ODBC database in near real time, from which traffic reports may be made. It does not save the actual data or headers. It works on ethX or cooked devices like ppp0. It uses PostgreSQL embedded SQL or libodbc++ to insert the data, the pcap library to capture traffic, and pthreads to capure and write at the same time. Pcap filters can be specified on the command line. Logs go to syslog. Under development are tools that analyze this traffic to determine the type based on flows, not packet inspection.
Network-config is a simple and easy to use program that helps in configuring the network interfaces for Linux-based operating systems. It allows you to have multiple configurations for the same computer, and to easily configure NAT for Internet sharing. It can also be used to scan for wireless networks. It is written in Perl and uses GTK2+, but also works as a command line program.