19216811.liveFirewall
NAT technology supports simple firewalls and provides options for blocking access from the
Internet, like Telnet, FTP, TFTP, WEB, SNMP and IGMP.
Domain Name System Relay
Domain Name System (DNS) relay provides an easy way to map a domain name with a
user-friendly name such as www.billion.com with an IP address. When a local machine sets
its DNS server to the router’s IP address, every DNS conversion request packet from the PC
to this router is forwarded to the real DNS on the outside network.
Dynamic Domain Name System (DDNS)
The Dynamic DNS service allows you to alias a dynamic IP address to a static hostname.
This dynamic IP address is the WAN IP address. To use the service, you must first apply for
an account from a DDNS service such as http://www.dyndns.org/.
PPP over Ethernet (PPPoE)
The BiPAC 7202 Series provides an embedded PPPoE client function to establish a
connection. You get greater access speed without changing the operation concept, while
sharing the same ISP account and paying for one access account. No PPPoE client
software is required for the local computer. Automatic Reconnect and Disconnect Timeout
(Idle Timer) functions are also provided.
Quality of Service (QoS)
QoS gives you full control over which types of outgoing data traffic should be given priority
by the router, ensuring important data like gaming packets, customer information, or
management information move through the router ay lightning speed, even under heavy
load. The QoS features are configurable by source IP address, destination IP address,
protocol, and port. You can throttle the speed at which different types of outgoing data pass
through the router, to ensure P2P users don’t saturate upload bandwidth, or office browsing
doesn’t bring client web serving to a halt. In addition, or alternatively, you can simply change
the priority of different types of upload data and let the router sort out the actual speeds.
Virtual Server:
You can specify which services are visible to outside users. The router detects an incoming
service request and forwards it to the specific local computer for handling. For example, you
can assign a PC in a LAN to act as a Web server inside and expose it to the outside network.
Outside users can browse inside the web server directly while it is protected by NAT. A DMZ
host setting is also provided for local computers exposed to the outside Internet network.
Dynamic Host Configuration Protocol (DHCP) Client and Server
On a WAN site, the DHCP client obtains an IP address from the Internet Service Provider
(ISP) automatically. On a LAN site, the DHCP server allocates a range of client IP
4