Firewall Overview - ZyXEL Communications Prestige 650H-E Series Manual

Zyxel adsl router compact guide
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The following table describes the labels in this screen.
LABEL
Type
Choose the port mapping type from the drop-down list box. Refer to the mapping types as
discussed previously.
Local Start IP
This refers to the Inside Local Address (ILA), that is the starting local IP address. Local IP
addresses are N/A for Server port mapping.
Local End IP
This is the end local IP address. If the rule is for all local IP addresses, then this field
displays 0.0.0.0 and 255.255.255.255 as the Local End IP address. This field is N/A for
One-to-One and Server mapping types.
Global Start IP
This refers to the global IP address. 0.0.0.0 is for a dynamic IP address from your ISP with
Many-to-One and Server mapping types.
Global End IP
This is the ending Inside Global Address (IGA), that is the starting global IP address. This
field is N/A for One-to-One, Many-to-One and Server mapping types.
Server
Click this link to go to the NAT - Edit SUA/NAT Server Set screen to edit a server set that
Mapping Set
you have selected in the Server Mapping Set field. Refer to the SUA/NAT Server section.

5.4 Firewall Overview

The Prestige firewall is a stateful inspection firewall and is designed to protect against Denial of
Service attacks when activated. The Prestige's purpose is to allow a private Local Area Network
(LAN) to be securely connected to the Internet. The Prestige can be used to prevent theft,
destruction and modification of data, as well as log events, which may be important to the security
of your network. The Prestige also has packet-filtering capabilities.
Prestige 650H-E
Figure 17 NAT: Address Mapping
Table 5 NAT: Address Mapping
19
DESCRIPTION

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