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single service via load balancing algorithm.
Port-Mapping Group: Group feature is available for Mapped IPs and Port
Mapping settings to simplify the process of applying addresses to network
policies.
Terms in Mapped IPs
Mapped IP Address
Specify the IP address of a WAN port to be mapped.
Host IP Address
Specify an IP address for the internal host.
Terms in Port Mapping
Public IP Address
Specify an IP address for the virtual server.
Service
Select a service from the drop-down list.
External Service Port
Specify a port number for the service. The service port allows modification
if there is only one port being used for providing the service. For example,
the default port for accessing the HTTP websites is "80", it may be changed
into any other valid port. Yet, HTTP access requires new port to be
appended to the website address, such as http://www.yahoo.com:8080.
Load Balancing
Round-Robin: In this mode, sessions are allocated to the internal servers
by means of a round-robin cycle. This improves overall efficiency and
prevents the entire load being placed on just a single server.
Redundancy: When the main server ceases to function, the sessions will
then be allocated to the backup servers according to their number on the
list.
Source IP Hash: Sessions are allocated according to the source IP.
Interface
Select the subnet that the virtual server is located in.
Private IP Address
Specify an IP address for the virtual server.
4.7.1 Examples of Virtual Server
Prerequisite Configuration (Note: IP addresses are used as example only)
Apply for two ADSL lines with static IP addresses from a local ISP.
Configure Port1 as LAN1 (192.168.1.1, NAT/ Routing Mode) and connect to the
LAN subnet 192.168.1.x / 24
Gigabit Multi-Homing VPN Security Gateway
153
MH-2300
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