User Manual

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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.
Advanced_ Inbound Filter
When you use the Virtual Server, Port Forwarding, 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.