Figure 10-2 Menu 21.2 - Firewall Setup; Figure 10-3 Example Firewall Log - ZyXEL Communications Prestige 652 User Manual

Prestige 652 ADSL Security Router
10.3.1 Activating the Firewall
Enter option 2 in this menu to bring up the following screen. Press [SPACE BAR] and then [ENTER] to
select Yes in the Active field to activate the firewall. The firewall must be active to protect against Denial of
Service (DoS) attacks. Additional rules may be configured using the web configurator.
The firewall protects against Denial of Service (DOS) attacks when
it is active. The default Policy sets
1. allow all sessions originating from the LAN to the WAN and
2. deny all sessions originating from the WAN to the LAN
You may define additional Policy rules or modify existing ones but
please exercise extreme caution in doing so
Active: No
LAN-to-WAN Set Name: ACL Default Set
WAN-to-LAN Set Name: ACL Default Set
Please configure the Firewall function through Web Configurator.
Configure the firewall rules using the web configurator or CLI commands.
10.3.2 Viewing the Firewall Log
In menu 21, enter 3 to view the firewall log. An example of a firewall log is shown next.
# Time Packet Information
0|Jan 1 00 |From:192.168.17.1 To:192.168.17.255 |default policy |block
| 15:43:19|UDP src port:00520 dest port:00520
1|Jan 1 00 |From:172.20.1.179 To:172.21.1.66
| 15:43:20|UDP src port:03571 dest port:00161
2|Jan 1 00 |From:172.21.1.148 To:172.21.255.255 |default policy |block
| 15:43:20|UDP src port:00137 dest port:00137
Clear Firewall Log (y/n):
10-2
Menu 21.2 - Firewall Setup
Press ENTER to Confirm or ESC to Cancel:
Figure 10-2 Menu 21.2 — Firewall Setup

Figure 10-3 Example Firewall Log

Reason Action
|<2,00> |
|default policy |block
|<2,00> |
|<2,00> |
Introducing the Prestige Firewall