Policy - LevelOne FBR-2000 User Manual

Policy

This section provides the Administrator with facilities to sent control policies for packets with
different source IP addresses, source ports, destination IP addresses, and destination ports.
Control policies decide whether packets from different network objects, network services, and
applications are able to pass through the Multi-Homing Gateway.
What is Policy?
The device uses policies to filter packets.
destination address, services, permission, packet log, packet statistics, and flow alarm. Based
on its source addresses, a packet can be categorized into:
(1). Outgoing: a client is in the LAN networks while a server is in the WAN 1/2 networks.
(2) Incoming, a client is in the WAN 1/2 networks, while a server is in the LAN networks.
(3) To DMZ: a client is either in the internal networks or in the WAN networks while, server is
in DMZ.
(4) From DMZ, a client is in DMZ while server is either in the internal networks or in the WAN
networks.
How do I use Policy?
The policy settings are source addresses, destination addresses, services, permission, log,
statistics, and flow alarm. Among them, source addresses, destination addresses and IP
mapping addresses have to be defined in the Address menu in advance. Services can be
used directly in setting up policies, if they are in the Pre-defined Service menu. Custom
services need to be defined in the Custom menu before they can be used in the policy
settings.
If the destination address of an incoming policy is a Mapped IP address or a Virtual Server
address, then the address has to be defined in the Virtual Server section instead of the
Address section.
Policy Directions:
Step 1. In Address, set names and addresses of
source networks and destination networks.
Step 2. In Service, set services.
Step 3. In Virtual Server, set names and addresses
of mapped IP or virtual server (only applied to
Incoming policies).
Step 4. Set control policies in Policy
The policy settings are: source address,
- 229 -