D-Link DIR-853 User Manual page 186

DIR-853 AC1300 MU-MIMO Wi-Fi Gigabit Router
with 3G/LTE Support and USB Port 3.0
User Manual
Parameter
TCP MSS
TCP MSS Value
Allow traffic between
tunneled networks
Maximum Segment Size of a TCP packet. This parameter influences
the size of a TCP packet which will be sent from a remote host to the
router.
If the Manual value is selected, you can specify the parameter in the
TCP MSS Value field.
If the Path MTU discovery value is selected, the parameter will be
configured automatically.
The maximum size (in bytes) of a non-fragmented packet. The field is
available for editing when the Manual value is selected from the TCP
MSS drop-down list.
Move the switch to the right to allow data exchange between subnets
with which IPsec tunnels have been created.
Page 186 of 228
Configuring via Web-based Interface
Description