ZyXEL ARMOR G1 User Guide - Page 125

Security, NBG6818 User's Guide, Settings > Firewall > IPv4 Firewall

Page 125 highlights

Chapter 12 Security Figure 73 Settings > Firewall > IPv4 Firewall The following table describes the labels in this screen. Table 42 Settings > Firewall > IPv4 Firewall 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. Respond to Ping on The NBG6818 will not respond to any incoming Ping requests when None 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. Firewall Setup Enable Firewall Select Enable to activate the firewall. The NBG6818 performs access control and protects against Denial of Service (DoS) attacks when the firewall is activated. Enable Firewall Rule Filter Rule Select Enable to activate the firewall rules that you define (see Add Firewall Rule below). Actions Select Drop to silently discard the packets which meet the firewall rules. The others are accepted. Firewall Rule No. Service Name MAC address Select Accept to allow the passage of the packets which meet the firewall rules. The others are blocked. This is your firewall rule number. The ordering of your rules is important as rules are applied in turn. This is a name that identifies or describes the firewall rule. This is the MAC address of the computer for which the firewall rule applies. NBG6818 User's Guide 125

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Chapter 12 Security
NBG6818 User’s Guide
125
Figure 73
Settings > Firewall > IPv4 Firewall
The following table describes the labels in this screen.
Table 42
Settings > Firewall > IPv4 Firewall
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.
Respond to Ping
on
The NBG6818 will not respond to any incoming Ping requests when
None
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.
Firewall Setup
Enable Firewall
Select
Enable
to activate the firewall. The NBG6818 performs access control and protects
against Denial of Service (DoS) attacks when the firewall is activated.
Enable Firewall Rule
Filter Rule
Select
Enable
to activate the firewall rules that you define (see Add Firewall Rule below).
Actions
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.
Firewall Rule
No.
This is your firewall rule number. The ordering of your rules is important as rules are applied in
turn.
Service Name
This is a name that identifies or describes the firewall rule.
MAC address
This is the MAC address of the computer for which the firewall rule applies.