Dnsreflector

dnsreflector daemon listens for DNS queries on a local UDP port and answers with records pointing back to localhost. Combined with OpenBSDs packet filter pf(4) this works as a bandwidth efficient spamtrap. dnsreflector was written and tested with OpenBSD. If you are interested in running... Platforms: *nix

dnsproxy daemon is a proxy for DNS queries. It forwards these queries to two previously configured nameservers: one for authoritative queries and another for recursive queries. The received answers are sent back to the client unchanged. No local caching is done. Primary motivation for this... Platforms: *nix

pftabled daemon is a small helper to make OpenBSDs pf tables reachable from other hosts. One can add/delete/flush IP addresses to/from a remote table with a single UDP datagram. pftabled icludes a simple client program to do this on the command line. Usage pftabled [options...] -d Run as... Platforms: *nix