6.15
Universal Plug and Play (UPnP)
latexTo access the UPnP settings perform the following:
1. Click
Universal Plug and Play
on the
Advanced
screen of the management
console. The
Universal Plug and Play
settings screen will be displayed (see
figure
6.46
).
Figure 6.46: Universal Plug and Play
2. Check the
Allow other network users to control GlobeSurfer 3G´s setwork fea-
tures
checkbox, to enable the UPnP feature. This will enable you to define
UPnP services on any of the LAN hosts.
3. Check the
Enable automatic cleanup of old unused UPnP services
checkbox,
to enable automatic cleanup of invalid rules. When enabled, this feature
checks validity of all the UPnP services and rules every 5 minutes. Any
UPnP defined service which is found to be old and not in use, is removed,
unless any user defined rule (see
Security
screen) depends on it. This
feature is disabled by default.
Since there is a limitation on the maximum number of UPnP defined ser-
vices to 256, you should want to enable the cleanup feature if you might
exceed this limit.
In which case might the limit be exceeded? UPnP services are not deleted
when disconnecting a computer without proper shutdown of the UPnP
application (e.g. messenger). Thus, if you are running a boingo, services
may often not be deleted, and will eventually lead to exhaustion of rules
and services, and no new services could be defined. In this scenario the
cleanup feature will find the services which are no longer valid and will
remove them, preventing services exhaustion.
177