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nuauth

NAME

nuauth - NUFW authentication server

SYNOPSIS

nuauth [ -h ] [ -V ] [ -v[v...] ] [ -l (local, for clients) port ] [ -C (local, for clients) address ] [ -L (local, for nufw) address ] [ -p (local, for nufw) port ] [ -t timeout ] [ -D ]

DESCRIPTION

This manual page documents the nuauth command.

Nuauth is the authentication server of the NUFW package. Whenever a client sends a packet(1) to start a connection through the gateway, the client program (nutcpc), installed on the client's station, sends an authentication packet(2) to nuauth. The gateway's firewall queues the packet(1) and sends informations about it directly to the nuauth server. Nuauth's job is to analyse both packets(1) and (2), and check user owns the right to initialize the connection (s)he has tried to. If Nuauth finds so, Nuauth sends authorization to Nufw to accept the packet(1) through, and the connection gets initialized. If not, the connection is Dropped.

Nuauth can use a backend LDAP server for user and groups definitions, as well as Access Lists associated with those groups. Interface to Users/Groups database can also be performed through PAM/NSS. An option is also to store the user database in DBM files. It should be noted that dynamic modifications of the users base can currently only be performed if an LDAP database is used.

Original packaging and informations and help can be found from http://www.nufw.org/

OPTIONS

-h

Issues usage details and exits.

-V

Issues version and exits.

-v

Increases verbosity level. Multiple switches are accepted and each of them increases the verbosity level by one. Default verbosity level is 2, max is 10.

-l port

Specifies TCP port to listen on for clients. Default value : 4129

-L address

Address to listen on for NuFW packets. Default : 127.0.0.1

-C address

Address to listen on for clients packets. Default : 0.0.0.0

-d address

Network address of the nufw (gateway) servers. Only NuFW servers at those addresses will be allowed to talk to nuauth.

-p port

This option is DEPRECATED and was in use only in v1 of the protocol, which was proof of concept, non-encrypted.

Specifies UDP port to send data to when addressing the nufw (gateway) server. Nufw server must be setup to listen on that port. Default value : 4128

-t seconds

Specifies timeout to forget packets not identified, and identification packets matching nothing. Default value : 15 s.

-D

Run as a daemon.

SIGNALS

The nuauth daemon is designed to deal with several signals : USR1, USR2, and POLL.

USR1

Increases verbosity. The daemon then acts as if it had been launched with one supplementary '-v'.A line is also added to the system log to mention the signal event.

USR2

Decreases verbosity. The daemon then acts as if it had been launched with one less '-v'. A line is also added to the system log to mention the signal event.

POLL

Logs an "audit" line, mentioning how many network datagrams were received and sent since daemon startup.

SEE ALSO

nufw(8)

AUTHOR

Nuauth was designed and coded by Eric Leblond, aka Regit (<eric@regit.org>) , and Vincent Deffontaines, aka gryzor (<vincent@gryzor.com>). Original idea in 2001, while working on NSM Ldap support.

This manual page was written by Vincent Deffontaines

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 2 as published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts and no Back-Cover Texts.