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PPTP PassThrough
enables PPTP type packets to pass WAN
LAN. PPTP (Point to Point
Tunneling Protocol) is another mechanism sometimes used in VPNs.
Remote Config Management
makes the configuration web pages in your gateway accessible from
the WAN side. Note that page access is limited to only those who know the gateway access
password. When accessing your gateway from a remote location, your must use HTTP port 8080 and
the WAN IP address of the gateway. e.g., if the WAN IP address is
157.254.5.7
, you would navigate
to
to reach your gateway.
Multicast Enable
enables multicast traffic to pass WAN
LAN. You may need to enable this to
see some types of broadcast streaming and content on the Internet.
UPnP
Universal 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.
NAT ALG
enable NAT ALG (application layer gateways) allows customized NAT traversal filters
to be plugged into the gateway to support address and port translation for certain application layer
"control/data" protocols such as RSVP, FTP, TFTP, Kerb88, NetBios , IKE, RTSP, Kerb1293 ,
H225 , PPTP , MSN , SIP , ICQ , IRC666x , ICQTalk , Net2Phone , IRC7000 , IRC8000 file transfer
in IM applications etc. In order for these protocols to work through NAT or a firewall, either the
application has to know about an address/port number combination that allows incoming packets, or
the NAT has to monitor the control traffic and open up port mappings (firewall pinhole) dynamically
as required. Legitimate application data can thus be passed through the security checks of the
firewall or NAT that would have otherwise restricted the traffic for not meeting its limited filter
criteria.
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