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WAN Interface Settings – Using Static IP
If you are using
Static IP
you have
to fill in the IP address information
provided to you by your ISP. All fields
are required except the Secondary
DNS Server. You should probably not
use the numbers displayed in these
fields, they are only used as an
example.
•
IP Address
– The IP
address
of
the
WAN
interface.
This
is
the
address that may be used to ping the firewall, remotely control it and be used as
source address for dynamically translated connections.
•
Subnet Mask
– Size of the external network.
•
Gateway IP
– Specifies the IP address of the default gateway used to reach for
the Internet.
•
Primary and Secondary DNS Server
– The IP addresses of your DNS servers,
only the Primary DNS is required.
WAN Interface Settings – Using DHCP
If you are using
DHCP
there is no
need to enter any values in any of
fields.
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WAN Interface Settings – Using PPPoE
Use the following procedure to
configure the DFL-1100 external
interface to use PPPoE (Point-to-Point
Protocol over Ethernet). This
configuration is required if your ISP
uses PPPoE to assign the IP address
of the external interface. You will have
to fill the username and password
provided to you by your ISP.
•
Username
– The login or
username supplied to you
by your ISP.
•
Password
– The
password supplied to you by your ISP.
•
Service Name
– When using PPPoE some ISPs require you to fill in a Service
Name.
•
Primary and Secondary DNS Server
– The IP addresses of your DNS servers,
these are optional and are often provided by the PPPoE service.
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18
WAN Interface Settings – Using PPTP
PPTP over Ethernet connections
are used in some DSL and cable
modem networks.
You need your account details, and
possibly also IP configuration
parameters of the actual physical
interface that the PPTP tunnel runs
over. Your ISP should supply this
information.
•
Username
– The login or
username supplied to you
by your ISP.
•
Password
– The
password supplied to you
by your ISP.
•
PPTP Server IP
– The IP
of the PPTP server that
the DFL-1100 should
connect to.
Before PPTP can be used to connect to you ISP the physical (WAN) interface parameters
need to be supplied, it’s possible to use either
DHCP
or
Static IP
, this depends on the type of
ISP used and this information should be supplied by them.
If using static IP, this information need to be filled in.
•
IP Address
– The IP address of the
WAN
interface. This IP is used to connect to
the PPTP server.
•
Subnet Mask
– Size of the external network.
•
Gateway IP
– Specifies the IP address of the default gateway used to reach for
the Internet.
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WAN Interface Settings – Using BigPond
The ISP Telstra BigPond uses
BigPond for authentication; the IP is
assigned with DHCP.
•
Username
– The login or
username supplied to you
by your ISP.
•
Password
– The
password supplied to you
by your ISP.
Traffic Shaping
When
Traffic Shaping
is enabled and the correct maximum up and downstream
bandwidth is specified it’s possible to control which policies have the highest priority when
large amounts of data are moving through the DFL-1100. For example, the policy for the web
server might be given higher priority than the policies for most employees' computers.
You can use traffic shaping to guarantee the amount of bandwidth available through the
firewall for a policy. Guarantee bandwidth to make sure that there is enough bandwidth
available for a high-priority service. You can also use traffic shaping to limit the amount of
bandwidth available through the firewall for a policy. Limit bandwidth to keep less important
services from using bandwidth needed for more important services.
Note:
If the limit is set too high, i.e. higher then your Internet connection, the traffic
shaping will not work at all.
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20
MTU Configuration
To improve the performance of your Internet connection, you can adjust the maximum
transmission unit (MTU) of the packets that the DFL-1100 transmits from its external interface.
Ideally, you want this MTU to be the same as the smallest MTU of all the networks between
the DFL-1100 and the Internet. If the packets the DFL-1100 sends are larger, they get broken
up or fragmented, which could slow down transmission speeds.
Trial and error is the only sure way of finding the optimal MTU, but there are some
guidelines that can help. For example, the MTU of many PPP connections is 576, so if you
connect to the Internet via PPPoE, you might want to set the MTU size to 576. DSL modems
may also have small MTU sizes. Most ethernet networks have an MTU of 1500.
Note:
If you connect to your ISP using DHCP to obtain an IP address for the external
interface, you cannot set the MTU below 576 bytes due to DHCP communication
standards.
Click the
Apply
button below to apply the setting or click Cancel to discard changes.
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