Backup DNS

DNS IP Address

Enter the IP Address of the DNS (Domain Name Server) here. These DNS will be used only if the primary DNS is unavailable.

TFTP

Enable

If enabled, TFTP (Trivial FTP) can be used to upgrade the firmware in this device. This is normally not required; a Windows utility is available for this purpose. You must obtain the firmware upgrade file first; instructions for using TFTP will be available with the upgrade.

UPnP

Enable UPnP Services	UPnP (Universal Plug and Play) allows automatic discovery and configuration of equipment attached to your LAN. UPnP is by supported Windows ME, XP, or later. If Enabled, this device will be visible via UPnP. If Disabled, this device will not be visible via UPnP.
Allow configuration ...	If checked, then UPnP users can change the configuration. If Disabled, UPnP users can only view the configuration.
Allow Internet access to be disabled	If checked, then UPnP users can disable Internet access via this device. If Disabled, UPnP users can NOT disable Internet access via this device.

MTU

MTU

MTU (Maximum Transmission Unit) value should only be changed if advised to do so by Technical Support. Enter a value between 1 and 1500. This device will still auto-negotiate with the remote server, to set the MTU size. The smaller of the 2 values (auto-negotiated, or entered here) will be used. For direct connections (not PPPoE or PPTP), the MTU used is always 1500.