Reference Manual for the ProSafe VPN Firewall FVS114
Advanced Configuration 8-13
202-10098-01, April 2005
UPnPUniversal Plug and Play (UPnP) helps devices, such as Internet appliances and computers, access
the network and connect to other devices as needed. UPnP devices can automatically discover the
services from other registered UPnP devices on the network.
Figure 8-8: UPnP menu
•Turn UPnP On: UPnP can be enabled or disabled for automatic device configuration. The
default setting for UPnP is disabled. If disabled, the router will not allow any device to
automatically control the resources, such as port forwarding (mapping), of the router.
•Advertisement Period: The Advertisement Period is how often the router will advertise
(broadcast) its UPnP information. This value can range from 1 to 1440 minutes. The default
period is for 30 minutes. Shorter durations will ensure that control points have current device
status at the expense of additional network traffic. Longer durations may compromise the
freshness of the device status but can significantly reduce network traffic.
•Advertisement Time To Live: The time to live for the advertisement is measured in hops
(steps) for each UPnP packet sent. A hop is the number of steps allowed to propagate for each
UPnP advertisement before it disappears. The number of hops can range from 1 to 255. The
default value for the advertisement time to live is 4 hops, which should be fine for most home
networks. If you notice that some devices are not being updated or reached correctly, then it
may be necessary to increase this value a little.
•UPnP Portmap Table: The UPnP Portmap Table display s the IP address of each UPnP device
that is currently accessing the router and which ports (Internal and External) that device has
opened. The UPnP Portmap Table also displays what type of port is opened and if that port is
still active for each IP address.