User`s guide

Settings – Advanced Feature
External Filters
Configuration
Block Selected ICMP Types – These settings determine whether or not this
device should respond to ICMP requests received from the WAN port. If
checked, the selected packet types are blocked. Otherwise, the packets are
accepted.
DNS Loopback
Used when you have some servers on the LAN and their domain names have
already been registered on public DNS. To avoid DNS loop back problems,
please enter the following fields:
• Domain Name – Enter the domain name specified by you for the local
server.
• Private IP – Enter the private IP address of your local server.
Application
Binding
• IDENT Port – Port 113 is associated with the Internet's (Identification /
Authentication) service. When a client program in your computer contacts a
remote server for services such as POP, IMAP, SMTP, that remote server
sends back a query on port 113. Enable to make this port closed, not
stealth.
• SMTP Binding –To determine if the SMTP packets are binding on the
specific WAN port.
• IPSec Passthrough – To allow IPSec traffic to go through the device via
the specific WAN port. If AUTO is selected, the device will choose the first
available WAN port for the session. Max Tunnels is fixed to 10.
• PPTP Passthrough – To allow PPTP traffic to go through the device via
the specific WAN port. If AUTO is selected, the device will choose the first
available WAN port for the session. Max Tunnels is fixed to 10.
Protocol & Port
Binding
Protocol and Port Binding
Use these settings if you wish to ensure that particular traffic is sent by a
specific WAN port, and thereby a particular ISP account.
• Enable - Enable or disable each item as required.
• Source IP - IP address of source from which packets are sent.
• Destination IP – IP address of destination to which packets are sent.
• Subnet Mask – With a subnet mask other than 255.255.255.255, you can
make an IP sub-network as your destination.
• Protocol – Select protocol type used by the traffic you wish to configure.
• Port Range - Enter the beginning and end of the port range used by the
traffic you wish to configure. If only a single port is used, enter the port
number in both fields.
• WAN - Select the WAN port you wish this traffic to use.
Protocol & Port
Binding List
This list shows the details of all protocol and port configuration data which are
currently defined. You can modify them by clicking on a selected row.
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