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 behaviour 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.

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.

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.

Here an 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, portmapping 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.

From the Reset page it's possible to restart the DFL-1100, either a quick restart which resets interfaces and re-read configuration or a full restart which restarts from power-on state.

Use the Reset to factory defaults function to restore system settings to the values set at the factory. This procedure will possibly change the DFL-1100 firmware version to lower version if it has been upgraded. This procedure deletes all of the changes that you have made to the DFL-1100 configuration and reverts the system to its original configuration including resetting interface addresses.

You can restore your system settings by uploading a previously downloaded system configurations file to the DFL-1100 if a backup of the device has been done.

The DFL-1100's software and system parameters are all stored on a flash memory card. The flash memory card is re-writable and re-readable. To upgrade the firmware first download the correct firmware image from D-Link. After having the newest version of software, please store it on the hard disk, click Browse and choose the file name of the newest version of the firmware, then click Upload firmware image.

The updating process won't overwrite the system configuration, so it is not necessary but still a good idea to backup it before upgrading the software.