Oidentd

{{Short description|Daemon for ident protocol}}

{{Use mdy dates|date=January 2018}}

{{Infobox software

| name = oidentd

| author = Ryan McCabe

| developer = Janik Rabe

| released = {{start date and age|1998}}

| latest release version = 3.1.0

| latest release date = {{Start date and age|2023|3|11}}{{cite web | url = https://github.com/janikrabe/oidentd/releases | title = oidentd Releases | website = GitHub | accessdate = July 4, 2022 | date = August 16, 2021}}

| programming language = C

| operating system = {{Plainlist|

• Linux, FreeBSD, OpenBSD, NetBSD, DragonFly BSD, Darwin, Solaris{{cite web | url = https://github.com/janikrabe/oidentd/blob/master/README | title = oidentd README | website = GitHub | accessdate = March 8, 2018 | date = March 8, 2018}}

}}

| language = English

| genre = Ident protocol daemon

| license = GNU GPL v2{{cite web | url = https://github.com/janikrabe/oidentd/blob/master/COPYING | title = oidentd License | website = GitHub | accessdate = March 8, 2018 | date = December 3, 2002}}

| website = {{URL|https://oidentd.janikrabe.com}}

| repo = {{URL|https://github.com/janikrabe/oidentd}}

}}

oidentd is an RFC 1413 compliant ident daemon which runs on Linux, FreeBSD, OpenBSD, NetBSD, DragonFly BSD, and some versions of Darwin and Solaris. It can handle IP masqueraded or NAT connections, and has a flexible mechanism for specifying ident responses. Users can be granted permission to specify their own ident responses, hide responses for connections owned by them, or return random 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.

The oidentd.conf configuration file can be used to specify the amount of control users have over the responses oidentd returns upon successful lookups for connections owned by them, while the $HOME/.oidentd.conf file allows a user to specify what ident response will be returned for specific connections.