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Lease Time The DHCP when enabled will temporarily give
your LAN clients an IP address. In the Lease
Time setting you can specify the time period that
the DHCP lends an IP address to your LAN
clients. The DHCP will change your LAN client’s
IP address when this time threshold period is
reached
DNS Proxy Select <Enabled> that all DNS requests to a
specific Domain Name will be routed to the XRT-
401E’s IP address. If you want to use the DNS
Proxy function of the device, the end user’s main
DNS server IP address should be the same IP
Address as the device.
DHCP Client List You can check your current status of the DHCP
client here, it also allow you to add the client IP
address with specific MAC address manually.
3.4 NAT
Network Address Translation (NAT) allows multiple users at your local site to access the Internet
through a single Public IP Address or multiple Public IP Addresses. NAT provides Firewall
protection from hacker attacks and has the flexibility to allow you to map Private IP Addresses to
Public IP Addresses for key services such as Websites and FTP. To meet various field
applications, XRT-401E NAT function can be disabled to as a regular router. If NAT is disabled,
all LAN side workstations must have valid IP addresses for Internet access. If the router is used
for routing application, not for Internet access, then the NAT function can be disabled.
Parameter Description
3.4.1 Virtual Server You can have different services (e.g. email, FTP, Web
etc.) going to different service servers/clients in your
LAN. The Virtual Server allows you to re-direct a
particular service port number (from the Internet/WAN
Port) to a particular LAN IP address and its service port
number.
3.4.2 Special Applications Some applications require multiple connections, such as
Internet games, video conferencing, Internet telephony
and others. In this section you can configure the router
to support these types of applications.
3.4.3 Port Forwarding You can have different services (e.g. email, FTP, Web
etc.) going to different service servers/clients in your
LAN. The Port Forwarding allows you to re-direct a
particular range of service port numbers (from the
Internet/WAN Ports) to a particular LAN IP address.
3.4.4 ALG Setting You can select special applications that need
“Application Layer Gateway” to support here.