ZyXEL Communications Corporation NBG419N 用户手册
Chapter 19 Firewall
NBG-419N Users Guide
164
Click Security > Firewall > Services. The screen appears as shown next.
Figure 103 Security > Firewall > Services
The following table describes the labels in this screen.
Table 64 Security > Firewall > Services
LABEL
DESCRIPTION
ICMP
Internet Control Message Protocol is a message control and error-
reporting protocol between a host server and a gateway to the Internet.
ICMP uses Internet Protocol (IP) datagrams, but the messages are
processed by the TCP/IP software and directly apparent to the
application user.
reporting protocol between a host server and a gateway to the Internet.
ICMP uses Internet Protocol (IP) datagrams, but the messages are
processed by the TCP/IP software and directly apparent to the
application user.
Respond to Ping
on
on
The NBG-419N will not respond to any incoming Ping requests when
Disable is selected. Select LAN to reply to incoming LAN Ping requests.
Select WAN to reply to incoming WAN Ping requests. Otherwise select
Disable is selected. Select LAN to reply to incoming LAN Ping requests.
Select WAN to reply to incoming WAN Ping requests. Otherwise select
LAN & WAN to reply to all incoming LAN and WAN Ping requests.
Apply
Click Apply to save the settings.
Enable Firewall Rule
Enable Firewall
Rule
Enable Firewall
Rule
Select this check box to activate the firewall rules that you define (see
Add Firewall Rule below)
Add Firewall Rule below)
Apply
Click Apply to save the settings.
Add Firewall Rule
Service Name
Service Name
Enter a name that identifies or describes the firewall rule.
MAC Address
Enter the MAC address of the computer for which the firewall rule
applies.
applies.
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