DNS Flood Detector was developed to detect abusive usage levels on high traffic nameservers and to enable quick response in halting (among other things) the use of one's nameserver to facilitate spam. DNS Flood Detector uses libpcap (in non-promiscuous mode) to monitor incoming dns queries to a nameserver. The tool may be run in one of two modes, either daemon mode or "bindsnap" mode. In daemon mode, the tool will alarm via syslog. In bindsnap mode, the user is able to get near-real-time stats on usage to aid in more detailed troubleshooting.
Simple Dynamic DNS is a very light and simple set of Perl scripts to provide DNS support for users with dynamic IPs. The server is a CGI which waits for a client connection, then authenticates and changes the user IP. The cron script will check every N minutes for changes in the zones specified in the config files, and if any, it rebuilds the Bind zone from the latests updated IPs.
Multicast DNS Reflector is a reflector for multicast DNS queries and responses. It is intended to be run on a router. When running, multicast DNS queries are reflected between specified local interfaces. This means that file shares and other services (such as iTunes) are advertised and available between ethernet segments, crossing the router.
sql2data fetches DNS information from an SQL database and dumps then in tinydns-data format into the file 'data'. Additional static DNS data from the text file static_data are copied into 'data'. sql2data optionally executes 'make' upon successful export/dump. Backups can be made to the files old_data and good_data.cdb. Optionally, DNS NOTIFY packets may be sent to the different nameservers referenced for the different zones.
ANDReA is a LAMP-based system for registration of network clients using DHCP. Splitting the network into "boot-net" for unregistered users and a "real-net" for registered users makes it possible to gather information about users in the network. Additionally it is possible to detect active services (FTP, WWW, a game server, etc.) and unregistered computers in the network. It is mainly used for LAN parties.