General Firewall Screen; Figure 96 Using Ip Alias To Solve The Triangle Route Problem; Figure 97 Security > Firewall > General L; Table 57 Security > Firewall > General - ZyXEL Communications NBG-460N User Manual

1 A computer on the LAN initiates a connection by sending a SYN packet to a receiving
server on the WAN.
2 The NBG460N reroutes the packet to Gateway A, which is in Subnet 2.
3 The reply from the WAN goes to the NBG460N.
4 The NBG460N then sends it to the computer on the LAN in Subnet 1.

Figure 96 Using IP Alias to Solve the Triangle Route Problem

13.3 General Firewall Screen

Click Security > Firewall to open the General screen. Use this screen to enable or disable the
NBG460N's firewall, and set up firewall logs.
Figure 97 Security > Firewall > General l
The following table describes the labels in this screen.
Table 57 Security > Firewall > General
LABEL
Enable Firewall
Packet Direction
NBG460N User's Guide
DESCRIPTION
Select this check box to activate the firewall. The NBG460N performs access
control and protects against Denial of Service (DoS) attacks when the firewall is
activated.
This is the direction of travel of packets.
Firewall rules are grouped based on the direction of travel of packets to which they
apply.
Chapter 13 Firewall
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