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Page 56 / 103 Scroll up to view Page 51 - 55
52
D-Link DIR-842 User Manual
Section 4 - Configuration
Features
QoS Engine
This section will allow you to prioritize particular clients over others, so that those
clients receive higher bandwidth. For example, if one client is streaming a movie
and another is downloading a non-urgent file, you might wish to assign the former
device a higher priority than the latter so that the movie streaming is not disrupted
by the traffic of the other devices on the network.
In the Features menu on the bar on the top of the page, click
QoS Engine
.
Under All Devices, you will see device cards representing each connected client. If
some are off-screen, you can use the
<
and
>
buttons to scroll through the cards.
A maximum of
one
device can be assigned
Highest
priority.
A maximum of
two
devices can be assigned
High
priority.
A maximum of
eight
devices can be assigned
Medium
priority.
If no devices are explicitly assigned a priority, they will all be treated with equal
priority. If some devices are not assigned a priority and others are, the unassigned
devices will be treated with the lowest priority.
To assign a priority level to a device, drag the device card from the All Devices list
over an empty slot and release the mouse button. The card will remain in the slot.
If you want to remove a priority assignment from a device and return it to the All
Devices list, click the cross icon in the top right of the device card.
Click
Save
when you are done.
Page 57 / 103
53
D-Link DIR-842 User Manual
Section 4 - Configuration
Firewall Settings
Enable or disable Demilitarized Zone (DMZ). This completely exposes
the client to threats over the Internet, and is not recommended in
ordinary situations.
If you enabled DMZ, enter the IP address of the client you wish to
expose, or use the drop-down menu to quickly select it.
Enabling Stateful Packet Inspection (SPI) helps to prevent cyber
attacks by validating that the traffic passing through the session
conforms to the protocol.
Enable this feature to protect your network from certain kinds of
“spoofing” attacks.
Enable or disable IPv6 simple security.
Enable or disable IPv6 ingress filtering.
Enable DMZ:
DMZ IP
Address:
Enable SPI IPv4:
Enable
Anti-Spoof
Checking:
IPv6 Simple
Security:
IPv6 Ingress
Filtering:
The router’s firewall protects your network from malicious attacks over the Internet.
In the Features menu on the bar on the top of the page, click
Firewall Settings
. Click
Advanced Settings...
to expand the list and see all of the options.
Page 58 / 103
54
D-Link DIR-842 User Manual
Section 4 - Configuration
Allows multiple machines on the LAN to connect to their corporate
network using the PPTP protocol.
Allows multiple VPN clients to connect to their corporate network
using IPSec. Some VPN clients support traversal of IPSec through
NAT. This Application Level Gateway (ALG) may interfere with the
operation of such VPN clients. If you are having trouble connecting
with your corporate network, try turning this ALG off. Please check
with the system administrator of your corporate network whether
your VPN client supports NAT traversal.
Allows applications that uses Real Time Streaming Protocol (RTSP)
to receive streaming media from the Internet.
Allows devices and applications using VoIP (Voice over IP) to
communicate across NAT. Some VoIP applications and devices have
the ability to discover NAT devices and work around them. This ALG
may interfere with the operation of such devices. If you are having
trouble making VoIP calls, try turning this ALG off.
Click
Save
when you are done.
PPTP:
IPSec (VPN):
RTSP:
SIP:
Page 59 / 103
55
D-Link DIR-842 User Manual
Section 4 - Configuration
IPv4/IPv6 Rules
Enter a name for the rule.
Enter the source IP address range that the rule will apply to, and using
the drop-down menu, specify whether it is a
WAN
or
LAN
IP address.
Enter the destination IP address range that the rule will apply to, and
using the drop-down menu, specify whether it is a
WAN
or
LAN
IP
address.
Select the protocol of the traffic to allow or deny (
Any
,
TCP
, or
UDP
)
and then enter the range of ports that the rule will apply to.
Use the drop-down menu to select the time schedule that the rule
will be enabled on. The schedule may be set to
Always Enable
, or
you can create your own schedules in the
Schedules
section (refer
to
Schedule
on page 64).
Click
Apply
when you are done.
The IPv4/IPv6 Rules section is an advanced option that lets you configure what kind
of traffic is allowed to pass through the network. To configure the IPv4 rules, from
the Firewall Settings page click
IPv4 Rules
. To configure IPv6 rules, from the Firewall
Settings page click
IPv6
Rules
. To return to the main Firewall Settings page, click
Advanced
.
To begin, use the drop-down menu to select whether you want to
ALLOW
or
DENY
the rules you create. You can also choose to turn filtering
OFF
.
If you wish to remove a rule, click on its trash can icon in the Delete column. If you
wish to edit a rule, click on its pencil icon in the Edit column. If you wish to create a
new rule, click the
Add Rules
button
.
Click
Save
when you are done. If you edit or
create a rule, the following options will appear:
Name:
Source IP
Address Range:
Destination IP
Address Range:
Port Range:
Schedule:
Page 60 / 103
56
D-Link DIR-842 User Manual
Section 4 - Configuration
Port Forwarding
Enter a name for the rule.
Enter the IP address of the computer on your local network that you
want to allow the incoming service to. Alternatively, select the device
from the drop-down menu.
Enter the TCP ports that you want to open. You can enter a single
port or a range of ports. Separate ports with a comma (for example:
24, 1009, 3000-4000).
Enter the UDP ports that you want to open. You can enter a single
port or a range of ports. Separate ports with a comma (for example:
24, 1009, 3000-4000).
Use the drop-down menu to select the time schedule that the rule
will be enabled on. The schedule may be set to
Always Enable
, or
you can create your own schedules in the
Schedules
section (refer
to
Schedule
on page 64).
Click
Apply
when you are done.
Name:
Local IP:
TCP Port:
UDP Port:
Schedule:
Port forwarding allows you to specify a port or range of ports to open for specific
devices on the network. This might be necessary for certain applications to connect
through the router. In the Features menu on the bar on the top of the page, click
Port Forwarding
.
If you wish to remove a rule, click on its trash can icon in the Delete column. If you
wish to edit a rule, click on its pencil icon in the Edit column. If you wish to create a
new rule, click the
Add Rules
button
.
Click
Save
when you are done. If you edit or
create a rule, the following options will appear:

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