[Thinlinc-technical] TL-4.7 : configuring printers with tl-setup fails on CUPS

[Henrik Andersson]

Hi,

On Tue, 29 Nov 2016 10:21:05 +0100
Rob De Langhe <rob.de.langhe at twistfare.be> wrote:

>
> we configured CUPS to listen not on 'localhost' (127.0.0.1) but on
> its LAN IP-addr (eg 1.2.3.4). We want to avoid that it 'listens' on
> all possible IP's which are present on the host. We also want to
> disable CUPS to listen on an IPv6. So we need to explicitly set an IP
> addr, and this cannot be localhost because then other hosts cannot
> communicate to CUPS on this master server.
> 
> Can the script be adjusted to cope with such (more secure, and IPv4
> only) configuration ?
> 

The simplest workaround would be to instruct cupsd to listen on both
localhost and the specific LAN IPv4 address. This can be accomplished
by adding two Listen directives in cupsd.conf like:

  Listen 192.168.1.1:631
  Listen localhost:631


Kind Regards,

Henrik Andersson (Cendio AB)