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       upsd.conf - Configuration for Network UPS Tools upsd


       upsd  uses this file to control access to the server and set some other
       miscellaneous configuration values.   This  file  contains  details  on
       access  controls,  so  keep  it secure.  Ideally, only the upsd process
       should be able to read it.


       ACL name netblock

              Define an Access Control List (ACL) called  name  that  contains
              the network netblock.  The netblock can be either the old style,
              such as this for a traditional "class C":

                   ACL mynet (IPv4)

              Or, you can use new‐style "CIDR format" (which is mandatory when
              IPv6 addresses are used):

                   ACL mynet (IPv4)

                   ACL mynet 2001:0db8:1234::/48 (IPv6)

              To just list one host, it would look like one of these:

                   ACL mybox (IPv4)

                   ACL mybox (IPv4)

                   ACL mybox 2001:0db8:1234:08d3::0370:7344/128 (IPv6)

              ACLs  are  used whenever you need to refer to a network or host,
              such  as  in  ACCEPT/REJECT   definitions   (below)   and   with
              "allowfrom" in upsd.users(5).

       ACCEPT aclname [aclname...]

              ACCEPT  let  clients on the hosts or networks defined by aclname
              connect to upsd.  You may specify  multiple  ACL  names  on  the
              ACCEPT line, and you may have multiple ACCEPT lines.

                   ACCEPT localhost mybox

                   ACCEPT otherbox

       REJECT aclname [aclname...]

              Like  ACCEPT, but it denies access instead.  upsd will close the
              connection without reading any data from the network.

              Note: you  should  still  use  firewall  rules  if  your  system
              provides them.  That provides another level of coverage.

                   REJECT badbox

                   REJECT all


       Here is an example configuration to show some of what is possible.

       "bigserver"  has  a UPS attached to a serial port.  It runs the driver,
       upsd, and upsmon in master mode.  This definition  is  also  referenced
       with an "allowfrom" in upsd.users(8).

       "workstation"  draws  from  the  same  UPS  as  "bigserver", but has to
       monitor it over the network.  It runs upsmon in  slave  mode.    It  is
       also referenced with an "allowfrom" in upsd.users(8).

       "webserver" doesn’t get power from this UPS at all, but it runs the CGI
       programs so it can make nice status displays.

       An abuser’s host is explicitly denied.

       Everything else is rejected.

                   ACL bigserver
                   ACL workstation
                   ACL webserver
                   ACL abuser
                   ACL all

                   ACCEPT bigserver workstation webserver
                   REJECT abuser
                   REJECT all


       ACCEPT and REJECT directives are checked in the  order  they  occur  in
       this  file.   The first ACL which matches a client causes the action to
       be taken.  If you need to ACCEPT one host and  REJECT  the  rest  of  a
       network, first list the host, then list the network on a line below it.

            ACCEPT goodhost

            REJECT badnet

       Any IP address which does not match one of your directives will default
       to  REJECT.  This is intended to keep your system safe if you forget to
       put "REJECT all" at the bottom.

       If you really want the whole world to have access to upsd, you  can  do
       "ACCEPT all", but that is not recommended.


       MAXAGE seconds

              upsd  usually  allows  a  driver to stop responding for up to 15
              seconds before declaring the data "stale".  If your driver takes
              a   very   long   time  to  process  updates  but  is  otherwise
              operational, you can use MAXAGE to make upsd wait longer.

              Most users should leave this at the default value.

       STATEPATH path

              Tell upsd to look for the driver state sockets  in  path  rather
              than the default that was compiled into the program.

       LISTEN interface port

              Bind a listening port to the interface specified by its Internet
              address.  This may be useful on hosts with multiple  interfaces.
              You  should not rely exclusively on this for security, as it can
              be subverted on many systems.

              Listen on TCP port port instead of the default value  which  was
              compiled  into  the code.  This overrides any value you may have
              set with ’configure --with-port’.  If you don’t change  it  with
              configure  or this value, upsd will listen on port 3493 for this

              Multiple LISTEN addresses may be specified.  The default  is  to
              bind to if no LISTEN addresses are specified.

                   LISTEN ::1
                   LISTEN 2001:0db8:1234:08d3:1319:8a2e:0370:7344

       This  parameter  will  only be read at startup.  You’ll need to restart
       (rather than reload) upsd to apply any changes made here.


       upsd(8), nutupsdrv(8), upsd.users(5)

   Internet resources:
       The NUT (Network UPS Tools) home page:

                                Mon Jan 22 2007                   UPSD.CONF(5)