ZyXEL Communications LTE3301 Series User Manual page 107

Figure 71 Security > Firewall > Services l
The following table describes the labels in this screen.
Table 48 Security > Firewall > Services
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 The LTE3301 will not respond to any incoming Ping requests when Disable is selected.
on 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.
Apply Click Apply to save the settings.
WAN Stealth Mode
Enable WAN Select this check box to silently discard the matched packets without sending a TCP reset
Stealth Mode packet or an ICMP destination-unreachable message to the sender.
Apply Click Apply to save the settings.
Enable Firewall Rule
Enable Firewall Select this check box to activate the firewall rules that you define (see Add Firewall Rule
Rule below).
Apply Click Apply 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.
Chapter 14 Firewall
LTE3301 Series User's Guide
107