DIR-825 AC1200 Wave 2 MU-MIMO Wi-Fi Gigabit Router
with 3G/LTE Support and USB Port
User Manual
Configuring via Web-based Interface
Parameter Description
Local identifier
Select an identification method for the local host (router) from the
drop-down list:
• Address: The local host is identified by its IP address.
• FQDN: The local host is identified by its domain name. The
value is unavailable, if the Main value is selected from the
Exchange mode list.
Identifier value
Specify the local host identifier.
Pre-shared key
A PSK key for mutual authentication of the parties. Click the Show
icon ( ) to display the entered key.
Interface
Select a WAN connection through which the tunnel will pass. When
the Automatic value is selected, the router uses the default WAN
connection.
NAT Traversal
The NAT Traversal function allows VPN traffic to pass through the
NAT-enabled router.
Select the Disabled value to disable the function.
Select the Enabled value to enable the function if it is supported by a
remote host.
Select the Force value to make the function be always on, even if it is
not supported by a remote host.
Exchange mode
Select the mode of negotiation from the drop-down list.
• Main: The mode provides the most secure communication
between the parties in the course of negotiation of the
authentication procedures.
• Base: The draft negotiation mode with preliminary
authentication of a host.
• Aggressive: The mode provides faster operation as it skips
several stages of negotiation of the authentication procedures.
Enable DPD
Move the switch to the right to enable using DPD protocol for this
tunnel. Such a setting allows to check the status of a remote host: if
encrypted packets exchange between the router and the remote host
breaks down, the router starts sending DPD messages to the remote
host. If the switch is moved to to the left, the DPD delay and The
maximum number of failures DPD fields are not available for
editing.
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