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Protocol Type
Source Group
Source IP Address
Source Port
Destination Group
Destination IP Address
Rewrite Destination IP
Address
Destination Port
Rewrite Destination Port
NAT Reflection
NAT Reflection Source
ALG
ALG stands for Application Layer Gateway. Its purpose is to prevent some of the problems caused by router firewalls by
inspecting VoIP traffic (packets) and if necessary modifying it. Navigate to Web GUI → Firewall → ALG to activate ALG.
CAPTIVE PORTAL
Captive Portal feature on GWN70xx helps to define a Landing Page (Web page) that will be displayed on Wi-Fi clients'
browsers when attempting to access the Internet. Once connected Wi-Fi clients will be forced to view and interact with that
landing page before Internet access is granted.
The Captive Portal feature can be configured from the GWN70xx Web page under "Captive Portal".
Policy List
Select one of the protocols from dropdown list or All, available options are: UDP, TCP, TCP/UCP and All.
Select a WAN interface or a LAN group for Source Group, or select All.
Set the Source IP address.
Set the Source Port.
Select a WAN interface or a LAN group for Destination Group, or select All. Make sure that destination and
source groups are different to avoid conflict.
Set the Destination IP address.
Set the Rewrite Destination IP Address.
Set the Destination Port.
Set the Rewrite Destination Port
Click on "ON" to enable NAT Reflection
Select NAT Reflection either Internal or External.
Table 25: DNAT
Figure 78: ALG
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