LevelOne FBR-2000, User Manual

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Multiple Subnet This function allows local port to set multiple subnet works and connect with
the internet through different WAN 1 IP Addresses.
Hacker Alert When abnormal conditions occur, the Multi-Homing Gateway will send an e-mail
alert to notify the Administrator, and also display warning messages in the Event window of
Alarm.
Route Table Use this function to enable the Administrator to add static routes for the
networks when the dynamic route is not efficient enough.
DHCP Administrator can configure DHCP (Dynamic Host Configuration Protocol) settings for
the LAN (LAN) network.
DNS-Proxy The Multi-Homing Gateway Administrator may use the DNS Proxy function to
make the Multi-Homing Gateway act as a DNS Server for the Internal and DMZ network. All
DNS requests to a specific Domain Name will be routed to the Multi-
Homing Gateway‟s IP
addre
ss. For example, let‟s say an organization has their mail server (i.e., mail.MH200.com)
in the DMZ network (i.e. 192.168.10.10). The outside Internet world may access the mail
server of the organization easily by its domain name, providing that the Administrator has set
up Virtual Server or Mapped IP settings correctly. However, for the users in the Internal
network, their WAN DNS server will assign them a public IP address for the mail server. So
for the Internal network to access the mail server (mail.MH2000.com), they would have to go
out to the Internet, then come back through the Multi-Homing Gateway to access the mail
server. Essentially, the internal network is accessing the mail server by a real public IP
address, while the mail server serves their request by a NAT address and not a real one.
This odd situation occurs when there are servers in the DMZ network and they are binded to
real IP addresses. To avoid this, set up DNS Proxy so all the Internal network computers will
use the Multi-Homing Gateway as a DNS server, which acts as the DNS Proxy.
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