Oidentd
services.oidentd.enable
Whether to enable ‘oidentd’, an implementation of the Ident protocol (RFC 1413). It allows remote systems to identify the name of the user associated with a TCP connection.
Type: boolean
Default
false
Declared by: https://github.com/nixos/nixpkgs/blob/master/nixos/modules/services/networking/oidentd.nix