Draytek Vigor2620 LTE Series User Manual page 263

If you do not choose any codepage, no decoding job of URL
will be processed. Please use the drop-down list to choose
a codepage.
If you do not have any idea of choosing suitable codepage,
please open Syslog. From Codepage Information of Setup
dialog, you will see the recommended codepage listed on
the dialog box.
Window size – It determines the size of TCP protocol
(0~65535). The more the value is, the better the
performance will be. However, if the network is not stable,
small value will be proper.
Session timeout–Setting timeout for sessions can make the
best utilization of network resources. However, Queue
timeout is configured for TCP protocol only; session
timeout is configured for the data flow which matched with
the firewall rule.
DrayTek Banner – Please uncheck this box and the
following screen will not be shown for the unreachable web
page. The default setting is Enabled.
Strict Security Checking - All the packets, while
transmitting through Vigor router, will be filtered by
firewall settings configured by Vigor router. When the
resource is inadequate, the packets will be blocked if Strict
Security Checking is enabled. If Strict Security Checking is
not enabled, then the packets will pass through the router.
3. When you finish the configuration, please click OK to save and exit this page.
Vigor2620 Series User's Guide 251