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enhanced-duc.1
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.\"
.\" Public domain
.\"
.Dd January 10, 2023
.Dt ENHANCED-DUC 1
.Os
.Sh NAME
.Nm enhanced-duc
.Nd secure ddns update client
.Sh SYNOPSIS
.Nm enhanced-duc
.Bk -words
.Op Fl hcDoB
.Op Fl x Ar path
.Ek
.Sh DESCRIPTION
.Nm
is a dynamic dns update client and can act as a daemon.
Focus is on providing a DUC with high quality not least in the aspect
of security.
.Sh OPTIONS
.Bl -tag -width Ds
.It Fl h
Print help
.It Fl c
Create a config file by asking the user for input.
The user will be given the opportunity to choose a location for the
config file, i.e. where to create it.
.It Fl x Ar path
Start
.Nm
with the config file specified by path
.It Fl D
Turn on debug mode
.It Fl o
Don't cycle, i.e. don't periodically check for IP changes.
Only update the hostname(s) once.
.It Fl B
Run in the background and act as a daemon
.El
.Sh GOOD TO KNOW
.Bl -bullet -compact
.It
If the program isn't running as a daemon it can be terminated with
CTRL+C
.It
If port 443 is specified TLS/SSL will be enabled
.It
Valid ports are 80, 443 and 8245
.El
.Sh MITIGATIONS
On
.Ox
.Xr pledge 2
is used to force
.Nm
into a restricted service operating mode.
(This since version 1.6.)
Further, as of 2.2,
.Xr pledge 2
is used in combination with
.Xr unveil 2 .
.Sh FILES
.Bl -tag -width " " -compact
.It Pa /etc/enhanced-duc.conf
.Nm
config file
.It Pa /var/run/enhanced-duc.pid
.Nm
PID file
.El
.Sh AUTHORS
.Nm
was written by
.An Markus Uhlin
.Aq Mt [email protected]
.Sh BUGS
.Lk https://github.com/uhlin/enhanced-duc/issues