ZyXEL Communications NBG4615 User Manual
Chapter 24 Firewall
NBG4615 User’s Guide
190
Click Security > Firewall > Services. The screen appears as shown next.
Figure 121
Security > Firewall > Services l
The following table describes the labels in this screen.
Table 76
Security > Firewall > Services
LABEL
DESCRIPTION
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.
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 NBG4615 will not respond to any incoming Ping requests when Disable is
selected. Select WAN to reply to incoming WAN Ping requests.
selected. Select WAN to reply to incoming WAN Ping requests.
Apply
Click Apply to save the settings.
Enable Firewall Rule
Enable Firewall
Rule
Rule
Select this check box to activate the firewall rules that you define (see Add
Firewall Rule below).
Firewall Rule below).
Apply
Click Apply to save the settings.
Add Firewall Rule
Service Name
Enter a name that identifies or describes the firewall rule.
Dest IP Address
Enter the IP address of the computer to which traffic for the application or
service is entering.
service is entering.
The NBG4615 applies the firewall rule to traffic initiating from this computer.
Source IP Address Enter the IP address of the computer that initializes traffic for the application or
service.
The NBG4615 applies the firewall rule to traffic initiating from this computer.