Draytek Vigor2912 Series User Manual page 182

I. 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 - For the sake of security, you
might want the router executing strict security checking for
data transmission. The router performance will be affected
if you invoke strict security checking.
APP Enforcement – Check this box to execute the critical
checking for all the files transferred via IM/P2P.
Vigor2912 Series User's Guide 172