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DNS Relayer Settings
Click on
Servers
in the menu bar, and then click
DNS Relay
below it. The DFL-200
contains a DNS relayer that you can be configured to relay DNS queries from the internal LAN
to the DNS servers used by the firewall itself.
Enable DNS Relayer
Follow these steps to enable the DNS Relayer.
Step 1.
Enable by checking the
Enable DNS Relayer
box.
Step 2.
Enter the IP numbers that the DFL-200 should listen for DNS queries on.
Note:
If “Use address of LAN interface” is checked, you don’t have to enter an IP in IP
Address 1 as the firewall will know what address to use.
Click the
Apply
button below to apply the setting or click
Cancel
to discard changes.
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Disable DNS Relayer
Follow these steps to disable the DNS Relayer.
Step 1.
Disable by un-checking the
Enable DNS Relayer
box.
Click the
Apply
button below to apply the setting or click
Cancel
to discard changes.
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Tools
Ping
Click on
Tools
in the menu bar, and then click
Ping
below it. This tool is used to send a
specified number of ICMP Echo Request packets to a given destination. All packets are sent
in immediate succession rather than one per second. This behavior is the best one suited for
diagnosing connectivity problems.
•
IP Address
– Target IP to send the ICMP Echo Requests to.
•
Number of packets
– Number of ICMP Echo Request packets to send, up to 10.
•
Packet size
– Size of the packet to send, between 32 and 1500 bytes.
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Ping Example
In this example, the
IP Address
is 192.168.10.1 the
Number of packets
is five, after
clicking on
Apply
the firewall will start to send the ICMP Echo Requests to the specified IP.
After a few seconds the result will be shown, in this example only four out of five packets was
received back, a 20% packet loss, and the average time for the packets to travel to and from
the specified IP was 57 ms.
Dynamic DNS
The
Dynamic DNS
(require Dynamic DNS Service) allows you to alias a dynamic IP
address to a static hostname, allowing your device to be more easily accessed by specific
name. When this function is enabled, the IP address in Dynamic DNS Server will be
automatically updated with the new IP address provided by ISP.
Click DynDNS in the Tools menu to enter Dynamic DNS configuration.
The firewall provides a list of a few predefined DynDNS service providers; users have to
register with one of these providers before trying to use this function.
Add Dynamic DNS Settings
Follow these steps to enable Dynamic DNS.
Step 1.
Go to Tools and DynDNS.
Step 2.
Choose what Dynamic DNS service you would like to use, and fill in the needed
information, username and password in all cases and domains in all but cjb.net.
Click the
Apply
button below to apply the setting or click
Cancel
to discard changes.
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Backup
Click on
Tools
in the
menu bar,
and
then
click
Backup
below it.
Here
a
administrator
can backup and restore
the configuration. The
configuration file stores
system
settings,
IP
addresses of Firewall’s
network
interfaces,
address table, service
table, IPSec
settings,
port
mapping
and
policies.
When
the
configuration process is
completed,
system
administrator
can
download
the
configuration
file
into
local disc as a backup.
System
Administrators
can restore the firewall’s configuration file with the one stored on disc.
Exporting the DFL-200’s Configuration
Follow these steps to export the configuration.
Step 1.
Under the
Tools
menu and the
Backup
section
,
click on the Download
configuration button.
Step 2.
When the File Download pop-up window appears, choose the destination place in
which to save the exported file. The Administrator may choose to rename the file if
preferred.
Restoring the DFL-200’s Configuration
Follow these steps to restore the configuration.
Step 1.
Under the
Tools
menu and the
Backup
section, click on the
Browse
button next
to the empty field. When the
Choose File
pop-up window appears, select the file to which
contains the saved firewall settings, then click
OK
.
Step 2.
Click
Upload Configuration
to import the file into the Firewall.
19216811.live