Firewall Overview - ZyXEL Communications P-792H Compact Manual

LABEL
End Port No.
IP Address

5.3 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.
When activated, the firewall allows all traffic to the Internet that originates from the LAN, and
blocks all traffic to the LAN that originates from the Internet. In other words the Prestige will:
Allow all sessions originating from the LAN to the WAN
Deny all sessions originating from the WAN to the LAN
LAN-to-WAN rules are local network to Internet firewall rules. The default is to forward all traffic
from your local network to the Internet.
The following figure illustrates a Prestige firewall application.
Table 3 SUA/NAT Server
Type a port number in this field. To forward only one port, type the port number in the
Start Port field above and then type it again in this field. To forward a series of ports,
type the last port number in a series that begins with the port number in the Start Port
field above.
Enter the inside IP address of the server here.
Denial of Service Attacks
Figure 17 Prestige Firewall Application
Prestige 792H
DESCRIPTION
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