User Manual

Advanced Configuration
79
Options
Respond to ICMP
(ping)
The ICMP protocol is used by the "ping" and "traceroute" programs,
and by network monitoring and diagnostic programs.
• If checked, the Wireless Router will repond to ICMP packets
received from the Internet.
• If not checked, ICMP packets from the Internet will be ignored.
Disabling this option provides a slight increase in security.
Allow IPsec
The IPSec protocol is used to establish a secure connection, and is
widely used by VPN (Virtual Private Networking) programs.
• If checked, IPSec connections are allowed.
• If not checked, IPSec connections are blocked.
Allow PPTP
PPTP (Point to Point Tunneling Protocol) is widely used by VPN (Vir-
tual Private Networking) programs.
• If checked, PPTP connections are allowed.
• If not checked, PPTP connections are blocked.
Allow L2TP
L2TP is a protocol developed by Cisco for VPNs (Virtual Private Net-
works).
• If checked, L2TP connections are allowed.
• If not checked, L2TP connections are blocked.