BG9008W User Manual
Page 34 of 133
►
DMZ Private IP:
The private IP address for this DMZ entry.
►
Description:
Enter a description string for this DMZ entry
3.4.3.4 ALG
Settings
Application Layer Gateway (ALG)
allows customized Network Address Translation (NAT) traversal
filters to be plugged into the gateway to support address and port translation for certain application layer
"control/data" protocols such as FTP, H.323, PPTP, etc.
Choose the menu
Data Service
→
NAT Config
→
ALG Settings
to load the following page.
Figure 3-44 ALG Settings
The following items are displayed on this screen:
►
Enable SIP:
Enable or disable SIP ALG.
►
Enable H323:
Allow Microsoft NetMeeting clients to communicate across NAT if selected.
►
Enable FTP:
Allow FTP clients and servers to transfer data across NAT if selected.
►
Enable PPTP:
Enable or disable PPTP ALG.
►
Enable RTSP:
Enable or disable RTSP ALG.
3.4.4 Firewall
Config
3.4.4.1 Attack
Defense
With Attack Defense function enabled, the device can distinguish the malicious packets and prevent the
port scanning from external network, so as to guarantee the network security. Configure this for
abnormal packets defense and flood attack defense. Flood attack is a commonly used DoS (Denial of
Service) attack, including TCP SYN, UDP, ICMP, and so on.
Choose the menu
Data Service
→
Firewall Config
→
Attack Defense
to load the following page.