ZyXEL Communications NBG-416N User Manual page 112

Chapter 12 Firewall
The following table describes the labels in this screen.
Table 44 Security > Firewall > Services
LABEL
ICMP
Respond to Ping
on WAN
VPN
Passthrough
Apply
Reset
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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 NBG-416N will not respond to any incoming Ping requests when
Disable is selected. Select Enable to reply to incoming WAN Ping
requests.
Select the checkbox to enable the advanced pass through features:
• PPTP Passthrough: Select this option to allow the NBG-416N to
pass through VPN traffic using PPTP.
• L2TP Passthrough: Select this option to enable computers on your
LAN to make L2TP VPN connections to servers on the Internet.
• IPSEC Passthrough: Select this option to allow the NBG-416N to
pass through VPN traffic using the IPsec protocol.
Click Apply to save the settings.
Click Reset to start configuring this screen again.
NBG-416N User's Guide