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SIP
Allows devices and applications using VoIP (Voice over IP) to communicate across NAT.
Some VoIP applications and devices have the ability to discover NAT devices and work
around them. This ALG may interfere with the operation of such devices. If you are
having trouble making VoIP calls, try turning this ALG off.
Wake-On-LAN
This feature enables forwarding of "magic packets" (that is, specially formatted wake-up
packets) from the WAN to a LAN computer or other device that is "Wake on LAN" (WOL)
capable. The WOL device must be defined as such on the
Advanced
→
Virtual Server
page. The LAN IP address for the virtual server is typically set to the broadcast address
192.168.0.255. The computer on the LAN whose MAC address is contained in the magic
packet will be awakened.
MMS
Allows Windows Media Player, using MMS protocol, to receive streaming media from the
internet.
INBOUND FILTER
When you use the Virtual Server, Gaming, or Remote Administration features to open specific
ports to traffic from the Internet, you could be increasing the exposure of your LAN to
cyberattacks from the Internet. In these cases, you can use Inbound Filters to limit that exposure
by specifying the IP addresses of internet hosts that you trust to access your LAN through the
ports that you have opened. You might, for example, only allow access to a game server on your
home LAN from the computers of friends whom you have invited to play the games on that
server.
Inbound Filters can be used for limiting access to a server on your network to a system or group
of systems. Filter rules can be used with Virtual Server, Gaming, or Remote Administration
features. Each filter can be used for several functions; for example a "Game Clan" filter might
allow all of the members of a particular gaming group to play several different games for which
gaming entries have been created. At the same time an "Admin" filter might only allows systems
from your office network to access the WAN admin pages and an FTP server you use at home. If
you add an IP address to a filter, the change is effected in all of the places where the filter is
used.
Add/Edit Inbound Filter Rule
Here you can add entries to the Inbound Filter Rules List below, or edit existing entries.
Name
Enter a name for the rule that is meaningful to you.
Action
The rule can either Allow or Deny messages.