ZyXEL NBG-416N Betriebsanweisung

Chapter 12 Firewall

NBG-416N User’s Guide

The following table describes the labels in this screen.

Table 44   Security > Firewall > Services

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 WAN

The NBG-416N will not respond to any incoming Ping requests when 
Disable is selected. Select Enable to reply to incoming WAN Ping 
requests. 

VPN 
Passthrough

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. 

Apply

Click Apply to save the settings. 

Reset

Click Reset to start configuring this screen again.