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9.6. Super Server inetd

Inetd (sering disebut "Internet super-server") adalah sebuah server dari server. Itu mengeksekusi server yang jarang digunakan sesuai permintaan, sehingga mereka tidak perlu berjalan terus menerus.
Berkas /etc/inetd.conf memuat daftar server tersebut dan nomor port biasa mereka. Perintah inetd mendengarkan semua dari mereka; ketika mendeteksi koneksi ke salah satu port tersebut, itu mengeksekusi program server yang sesuai.
Setiap baris yang signifikan dari berkas /etc/inetd.conf menggambarkan sebuah server melalui tujuh ruas (yang dipisah dengan spasi):
The following example illustrates some use-cases after installing talkd, nullidentd (ident-server), and fingerd:

Contoh 9.1. Kutipan dari /etc/inetd.conf

#:BSD: Shell, login, exec and talk are BSD protocols.
talk   dgram   udp     wait    nobody.tty   /usr/sbin/in.talkd      in.talkd
ntalk  dgram   udp     wait    nobody.tty   /usr/sbin/in.ntalkd     in.ntalkd

#:INFO: Info services
ident  stream  tcp     nowait  nobody       /usr/sbin/nullidentd    nullidentd
finger stream  tcp     nowait  nobody       /usr/sbin/tcpd          /usr/sbin/in.fingerd
The tcpd program is frequently used in the /etc/inetd.conf file. It allows limiting incoming connections by applying access control rules, documented in the hosts_access(5) manual page, and which are configured in the /etc/hosts.allow and /etc/hosts.deny files. Once it has been determined that the connection is authorized, tcpd executes the real server (like in.fingerd in our example). It is worth noting that tcpd relies on the name under which it was invoked (that is the first argument, argv[0]) to identify the real program to run. So you should not start the arguments list with tcpd but with the program that must be wrapped.