Zyxel-communications 5 Series Manual de usuario descargar pdf (Pagina 221)

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ZyWALL 5/35/70 Series User’s Guide

Chapter 11 Firewall 221

To set the ZyWALL to by default silently block traffic from WAN 1 from going to the DMZ

interfaces, you would find where the From WAN1 row and the To DMZ column intersect and

set the field to Drop as shown.

Figure 105 Default Block Traffic From WAN1 to DMZ Example

11.3 Packet Direction Examples

Firewall rules are grouped based on the direction of travel of packets to which they apply. This

section gives some examples of why you might configure firewall rules for specific

connection directions.

By default, the ZyWALL allows packets traveling in the following directions.:

• LAN to LAN These rules specify which computers on the LAN can manage the

ZyWALL (remote management) and communicate between networks or

subnets connected to the LAN interface (IP alias).

Note: You can also configure the remote management settings to

allow only a specific computer to manage the ZyWALL.

• LAN to WAN

These rules specify which computers on the LAN can access which

computers or services connected to WAN 1. See Section 11.5 on page

227 for an example.

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