Ipv4 Firewall Screen - ZyXEL Communications NBG6604 User Manual

13.2 IPv4 Firewall Screen

Use this screen to enable or disable the NBG6604's IPv4 firewall, and set up firewall logs. Click Security >
IPv4 Firewall to open the firewall setup screen.
Figure 56 Security > IPv4 Firewall
The following table describes the labels in this screen.
Table 34 Security > IPv4 Firewall
LABEL
ICMP
Respond to Ping
on
Firewall Setup
Enable Firewall
Enable Firewall Rule
Enable Firewall
Rule
Filter table type
Add Firewall Rule
Service Name
MAC Address
Dest IP Address
Source IP Address
Protocol
Dest Port Range
Source Port Range
Add Rule
Firewall Rule
Chapter 13 Security
DESCRIPTION
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.
The NBG6604 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 LAN&WAN to reply to all incoming LAN and WAN Ping requests.
Select this check box to activate the firewall. The NBG6604 performs access control and
protects against Denial of Service (DoS) attacks when the firewall is activated.
Select this check box to activate the firewall rules that you define (see Add Firewall Rule
below).
Select DROP to silently discard the packets which meet the firewall rules. The others are
accepted.Select ACCEPT to allow the passage of the packets which meet the firewall rules.
The others are blocked.
Enter a name that identifies or describes the firewall rule.
Enter the MAC address of the computer for which the firewall rule applies.
Enter the IP address of the computer to which traffic for the application or service is entering.
The NBG6604 applies the firewall rule to traffic initiating from this computer.
Enter the IP address of the computer that initializes traffic for the application or service.
The NBG6604 applies the firewall rule to traffic initiating from this computer.
Select the protocol (TCP, UDP, or ICMP) used to transport the packets for which you want to
apply the firewall rule.
This is the port number/range of the destination that define the traffic type, for example TCP
port 80 defines web traffic.
This is the port number/range of the source that define the traffic type, for example TCP port
80 defines web traffic.
Click Add Rule to save the firewall rule.
NBG6604 User's Guide
89