High Quality Content by WIKIPEDIA articles! oidentd is an RFC 1413 compliant ident daemon which runs on Linux, FreeBSD, NetBSD, Darwin, OpenBSD, and Solaris. It can handle IP masqueraded/NAT connections and it has a flexible mechanism for specifying ident responses. Users can be granted permission to specify their own ident responses. Responses can be specified according to host and port pairs. One of the most notable capabilities is spoofed ident responses or ident spoofing.