Chapter 14 Firewall
LTE3301 Series User’s Guide
106
Fig ure 71
Security > Firewall > Services l
The following table describes the labels in this screen.
Table 48 Security > Firewall > Services
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 LTE3301 will not respond to any incoming Ping requests when
Disa b le
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.
Apply
Click
A p p ly
to save the settings.
WAN Stealth Mode
Enable WAN
Stealth Mode
Select this check box to silently discard the matched packets without sending a TCP reset
packet or an ICMP destination-unreachable message to the sender.
Apply
Click
A p p ly
to save the settings.
Enable Firewall Rule
Enable Firewall
Rule
Select this check box to activate the firewall rules that you define (see
A d d Fire wa ll Rule
below).
Apply
Click
A p p ly
to save the settings.
Add Firewall Rule
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.
Dest IP Address
Enter the IP address of the computer to which traffic for the application or service is entering.
The LTE3301 applies the firewall rule to traffic initiating from this computer.
