Ulog enables you to list past and present X11 sessions on a whole domain of machines. It is the X11 equivalent of "who" or "last" commands, with much more sophisticated options and search criteria (such as login username, hostname, display name, login/logout times, etc.). It relies on a ulogd daemon which keeps track of events (login, logout, etc.) sent via, for example, the startup and reset scripts of xdm.
Wfconvert is a firewalling policy compiler which imports and translates rules to and from any supported firewalling language. It provides a very simple and powerful language for describing firewalling rulesets. Wfconvert is part of the WallFire project, whose aim is to create a very general and modular firewalling management application based on Netfilter or any kind of low-level framework.
Wflogs is a firewall log analysis tool. It can be used to produce a log summary report in plain text, HTML, and XML, or to monitor firewalling logs in real-time. For now, netfilter, ipchains, ipfilter, cisco_pix, cisco_ios, and snort input formats are supported. It is particularly fast when asynchronous DNS resolution is enabled. The goal of the WallFire project is to build a very general and modular firewalling application based on Netfilter or any kind of low-level framework. Wflogs is part of the WallFire project, but can be used independently.