[Nut-upsuser] Access restriction on Upgrade Debian lenny -> Debian squeeze

Arnaud Quette aquette.dev at gmail.com
Fri Mar 11 09:32:28 UTC 2011

2011/3/11 Charles Lepple <clepple at gmail.com>

> On Mar 10, 2011, at 4:41 PM, Lukas Haase wrote:
>  However, after upgrading from Debian lenny to Debian squeeze (version
>> 2.4.3-1.1squeeze1) I get the messages in syslog:
>> ACL in upsd.conf is no longer supported - switch to LISTEN
>> ACCEPT in upsd.conf is no longer supported - switch to LISTEN
>> REJECT in upsd.conf is no longer supported - switch to LISTEN
>> allowfrom in upsd.users is no longer used
>> Well, I commented out the lines and it works now. However, there is no
>> access restriction anymore! :-( Why have these wonderful features been
>> dropped? Are there at least any alternatives for ACL, ACCEPT, REJECT and
>> allowFrom?
> The following web page indicates that the Debian squeeze packages of NUT
> were linked against libwrap, which has had a much longer track record of
> user-space connection filtering than NUT:
>   http://packages.debian.org/squeeze/nut
> This information should be in /usr/share/doc/nut/UPGRADING.gz.
> The NUT mailing list archives have a number of threads where the reasoning
> for this change has been discussed.
> You also might want to consider kernel-level firewall rules. That means
> that you won't be exposed to bugs in either NUT's connection handling, or
> that of libwrap.
a full chapter of the user documentation focus on all the security
mechanisms available with NUT, including TCP-Wrappers, Firewall, (SSL)
authentication and encryption

Linux / Unix Expert R&D - Eaton - http://powerquality.eaton.com
Network UPS Tools (NUT) Project Leader - http://www.networkupstools.org/
Debian Developer - http://www.debian.org
Free Software Developer - http://arnaud.quette.free.fr/
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