User Manual

Table Of Contents
Chapter 13 Firewall
NBG-418N v2 User’s Guide
119
The following table describes the labels in this screen.
Table 54 Security > Firewall > Services
LABEL DESCRIPTION
ICMP Internet Control Message Protocol (ICMP) 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-418N v2 will not respond to any incoming Ping requests when Disable is selected.
Select Ena ble to reply to incoming WAN Ping requests.
VPN Passthrough Select the checkbox to enable the advanced pass through features:
PPTP Pa ssthroug h: Select this option to allow the NBG-418N v2 to pass through VPN traffic
using PPTP.
L2TP Pa ssthroug h: Select this option to enable computers on your LAN to make L2TP VPN
connections to servers on the Internet.
IPSEC Pa ssthroug h: Select this option to allow the NBG-418N v2 to pass through VPN traffic
using the IPsec protocol.
Apply Click Apply to save the settings.
Reset Click Re se t to start configuring this screen again.