UniData Communication Systems UNIFIBER GIGAROUTER UF72N, Руководство пользователя, Страница: 43 / 210

Gigarouter
UF72N User Manual
Page 35 of 203
intended victim's spoofed source IP address. Check the box to
enable
Fraggle Defense .
►
Enable Smurf Defense: The Smurf Attack is a denial-of-service attack in which large
numbers of Internet Control Message Protocol (ICMP) packets
with the intended victim's spoofed source IP are broadcast to a
computer network using an IP Broadcast address. Check the
box to enable
Smurf Defense .
3.4.4.2 Service Type
Service Type defines the entry with protocol and port range, which can be chosen in Internet
Access-Ctrl page. Choose the menu Data Service → Firewall Config → Service Type to load the
following page.
Figure 3-46 View Service Type Configuration
Click the Index in the entry you want to modify. If you want to delete the entry, select it and click the Del .
Click the Add button to add a new entry.
Figure 3-47 Add or Modify Service Type Entry
The following items are displayed on this screen:
►
Name: Name of this entry, it will be list in Internet Access-Ctrl page.
►
Protocol: Select the protocol for this entry. Four types are provided: TCP, UDP, ICMP and ALL.
►
Port Range: Configure the port range for this entry.
►
Description: Enter a description string for this entry
3.4.4.3 Internet Access-Ctrl
Each sub-page under this page is used to control Internet access.
3.4.4.3.1 Access Control
This sub-page is used to control Internet access through IP, port, and time.
Choose the menu
Data Service → Firewall Config → Internet Access-Ctrl → Access Control to load
the following page.