DIR-853
AC1300 MU-MIMO Wi-Fi Gigabit Router
with 3G/LTE Support and USB Port 3.0
User Manual
Configuring via Web-based Interface
Parameter
Description
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.
DPD delay
A time period (in seconds) between attempts to check the status of a
remote host. By default, the value
5
is specified.
The maximum
number of failures
DPD
A number of DPD messages that were sent to check the status of a
remote host and left unanswered. By default, the value
3
is specified.
If a remote host does not answer the specified number of messages,
the router breaks down the tunnel connection, removes the encryption
keys, and tries to activate the connection.
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