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Advanced Configuration – Advanced Feature
External Filters Configuration
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 to the "Ident" server running
in many systems listening for these queries on port 113. This means that hackers can
probe port 113 as a rich source of your personal information. The default value of this check
box is “Disable”
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, they are accepted.
DNS Loopback - When you have some servers on the LAN and their domain names have already been
registered on a public DNS you can avoid a DNS loop back problem by entering the following fields.
Domain Name – Enter the domain name specified by you for local server.
Private IP – Enter the private IP address of your local server.
Interface Binding - SMTP (Simple Mail Transport Protocol) Binding
Unless you are using E-mail accounts from different ISPs on each port, you can ignore these
settings.
Some ISPs configure their E-mail Servers so they will not accept E-mail from IP addresses
not allocated by them. If you are using accounts from different ISPs, sending E-mail over the
wrong WAN port may result in non-acceptance of the mail. In this case, you can use these
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