Prewikka is a graphical front-end analysis console for the Prelude hybrid IDS framework. Prelude is a hybrid intrusion detection framework implementing an open communication layer for use by any security application. It offers the ability to unify currently available security tools into one, powerful, and distributed application. Providing numerous features, Prewikka facilitate the work of users and analysts. It provides alert aggregation, sensors and hearbeat views, and has user management and configurable filters. It has access to external tools such as whois and traceroute.
PortSensor is a powerful Windows/Unix server monitoring tool with Linux/Mac/Windows clients. Sensors can be created to monitor nearly any TCP/UDP service, such as: HTTP, FTP, POP3, SMTP, MySQL, and DNS. Custom sensors can be created to monitor your other critical server metrics, such as processor loads, mail queue loads, disk space usage, and log activity.
Path Analyzer Pro integrates advanced traceroute software (based on the open-source tool LFT) with performance measurements, DNS, whois, and specialized network resolution to help investigate network issues. It also supports geolocation, and can plot network paths on a map. People use it to research IP addresses, email addresses, and network paths, to graph protocol latency, jitter, and other factors, and to locate firewalls and other filters that may be impacting your connections.
check_writable is a Nagios plugin that checks if one or more directories are writable by checking that the supplied directory is indeed a directory, checking if the the filesystem permissions are OK, creating a temporary file, writing random data to the temporary file, and reading it back. It returns a critical status if one of the tests fails.