.TH TINCD 8 "June 2000" "tinc version 1.0pre3" "FSF"
.SH NAME
tincd \- tinc VPN daemon
.SH SYNOPSIS
.B tincd
[\fIoption\fR]...
.SH DESCRIPTION
.PP

This is the daemon of tinc, a secure virtual private
network (VPN) project. When started, tincd will read
it's configuration file to determine what virtual subnets
it has to serve and to what other tinc daemons it should connect.
It will connect to the ethertap or tun/tap device and set up a socket
for incoming connections.
If that succeeds, it will detach from the controlling terminal and
continue in the background, accepting and setting up connections to other
tinc daemons that are part of the virtual private network.

.SH OPTIONS
.TP
\fB\-c\fR, \fB\-\-config\fR=\fIDIR\fR
Read configuration options from DIR.
.TP
\fB\-D\fR, \fB\-\-no\-detach\fR
Don't fork and detach. This will also disable the automatic
restart mechanism for fatal errors.
.TP
\fB\-d\fR
Increase debug level (see below).
.TP
\fB\-k\fR, \fB\-\-kill\fR
Attempt to kill a running tincd and exit.
.TP
\fB\-n\fR, \fB\-\-net\fR=\fINETNAME\fR
Connect to net NETNAME.
.TP
\fB\-K\fR, \fB\-\-generate-keys\fR[=\fIBITS]\fR
Generate public/private RSA keypair and exit. If BITS is omitted,
the default length will be 1024 bits.
.TP
\fB\-\-help\fR
Display short list of options.
.TP
\fB\-\-version\fR
Output version information and exit.
.PP
.SH "SIGNALS"
.TP
\fBHUP\fR
Closes all connections, rereads the configuration file and restarts the daemon.
.TP
\fBINT\fR
Closes all connections and quits.
.TP
\fBUSR1\fR
Dumps the connection list to syslog.
.TP
\fBUSR2\fR
Dumps the subnet list to syslog.
.TP
\fBALRM\fR
Forces tincd to try to connect to an uplink immediately. Usually tincd attempts
to do this itself, but increases the time it waits between the attempts each time
it failed, and if tincd didn't succeed to connect to an uplink the first time after
it started, it defaults to the maximum time of 15 minutes.
.PP
.SH "DEBUG LEVELS"
The tinc daemon can send a lot of messages to the syslog. The more \fB\-d\fR options are
given to tincd, the more messages it will log. Each level inherits all messages of the
previous level:
.TP
\fIno debug options\fR
This will log a message indicating tincd has started along with a version number.
It will also any serious error.
.TP
\fB\-d\fR
This will log all connections that are made with other tinc daemons.
.TP
\fB\-dd\fR
This will log status and error messages from other tinc daemons.
.TP
\fB\-ddd\fR
This will log all requests that are exchanged with other tinc daemons. These include
authentication, key exchange and connection list updates.
.TP
\fB\-dddd\fR
This will log a copy of everything received on the meta socket.
.TP
\fB\-ddddd\fR
This will log all network traffic over the virtual private network.
.PP
.SH "FILES"
.TP
\fI/etc/tinc/<NETNAME>/tinc.conf\fR
The configuration file for tincd. This should also contain the private RSA key.
.TP
\fI/etc/tinc/<NETNAME>/hosts/*\fR
The directory containing the host configuration files
used to authenticate other tinc daemons. They contain
the public RSA keys of other hosts.
.PP
.SH "BUGS"
Maintaining a connection list on each tinc daemon that can connect and disconnect at any
moment, and making sure that all connections satisfy the tree property isn't easy. Although
we have done a lot to make sure tinc is sturdy and foolproof, it might happen that
some connection lists get corrupted.
.PP
\fBThe cryptography in tinc is not well tested yet. Use it at your own risk!\fR
.PP
If you find any bugs, report them to tinc@nl.linux.org.
.PP
.SH "TODO"
A lot, especially security auditting.
.PP 
.SH "SEE ALSO"
\fBtinc.conf\fR(5)
.TP
\fBhttp://tinc.nl.linux.org/\fR
.TP
\fBhttp://www.cabal.org/\fR
.PP
The full documentation for
.B tinc
is maintained as a Texinfo manual.  If the
.B info
and
.B tinc
programs are properly installed at your site, the command
.IP
.B info tinc
.PP
should give you access to the complete manual.
.PP
tinc comes with ABSOLUTELY NO WARRANTY.  This is free software,
and you are welcome to redistribute it under certain conditions;
see the file COPYING for details.
.SH "AUTHORS"
.na
.nf
Ivo Timmermans <itimmermans@bigfoot.com>
Guus Sliepen <guus@sliepen.warande.net>

And thanks to many others for their contributions to tinc!
.PP