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Chapter 4
based QoS in Layer 3, the Router can use the priority bits
in the Type of Service (ToS) octet to prioritize traffic. If
priority bits are used, the ToS octet may contain three bits
for IP Precedence or six bits for DSCP service.
QoS > DSCP Settings
DSCP Settings
DSCP to Queue
DSCP
This is the DSCP value in the incoming packet.
Queue
Select the traffic forwarding queue number to
which the DSCP priority is mapped. You can designate
up to four traffic priority queues configured on the Queue
Settings screen.
To reset this screen to the factory default queue settings,
click Restore Defaults. The defaults are for DSCP values
0-15, for DSCP values 16-31, and for DSCP values
32-63.
Click Save Settngs to save your changes, or click Cancel
Changes to undo them.
Firewall > General
Enable or disable a variety of firewall, security, and web
features.
4-Port SSL/IPSec VPN Router
Advanced Configuration
Firewall > General
General
Frewall
The firewall is enabled by default. If you disable
it, then the SPI, DoS, and Block WAN Request features,
Access Rules, and Content Filters will also be disabled, and
the Remote Management feature will be enabled.
SPI (Stateful Packet Inspecton)
by default. The Router's firewall uses Stateful Packet
Inspection to review the information that passes through
the firewall. It inspects all packets based on the established
connection, prior to passing the packets for processing
through a higher protocol layer.
DoS (Denal of Servce)
This option is enabled by default.
It protects internal networks from Internet attacks, such
as SYN Flooding, Smurf, LAND, Ping of Death, IP Spoofing,
and reassembly attacks.
Block WAN Request
This option is enabled by default.
Using this feature, the Router drops both unaccepted TCP
request and ICMP packets from the WAN side. Hackers will
not find the Router by pinging the WAN IP address.
Remote Management/SSL VPN
by default. If you want to use SSL or manage this Router
through a WAN connection, first change the password
on the Setup > Password screen (this prevents any
user from accessing the Router or using SSL with the
default password). Then select Enable for the Remote
Management/SSL VPN setting.
NOTE:
SSL VPN has higher priority than Port
Forwarding when HTTPS is enabled.
HTTPS
If Remote Management/SSL VPN is enabled,
HTTPS is enabled by default. If Remote Management/SSL
VPN is disabled, HTTPS is disabled by default.
This option is enabled
This option is disabled
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Troubleshooting
