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Chapter 12 Security
NBG7815 User’s Guide
128
Fig ure 72
Settings > Firewall > IPv4 Firewall
The following table describes the labels in this screen.
Table 42 Settings > Firewall > IPv4 Firewall
LABEL DESC RIPTIO N
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 NBG7815 will not respond to any incoming Ping requests when
No ne
is selected. Select
LAN
to reply to incoming LAN Ping requests. Select
WAN
to reply to incoming WAN Ping
requests. Otherwise select
LA N&WAN
to reply to all incoming LAN and WAN Ping requests.
Firewall Setup
Enable Firewall Select
Ena b le
to activate the firewall. The NBG7815 performs access control and protects
against Denial of Service (DoS) attacks when the firewall is activated.
Enable Firewall Rule
Filter Rule Select
Ena b le
to activate the firewall rules that you define (see Add Firewall Rule below).
Actions Select
Dro p
to silently discard the packets which meet the firewall rules. The others are
accepted.
Select
Ac c e pt
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.