Cisco CVR100W Administration Guide

Configuring Firewall
Configuring Basic Firewall Settings
Cisco CVR100W Wireless-N VPN Router Administration Guide 87
5
Port Forwarding
Port forwarding is used to redirect traffic from the Internet from one port on the
WAN to another port on the LAN. Common services are available or you can define
a custom service and associated ports to forward.
!
CAUTION Port forwarding is not appropriate for servers on the LAN, since there is a
dependency on the LAN device making an outgoing connection before incoming
ports are opened.
Some applications require that, when external devices connect to them, they
receive data on a specific port or range of ports in order to function properly. The
CVR100W must send all incoming data for that application only on the required
port or range of ports.
The CVR100W has a list of common applications and games with corresponding
outbound and inbound ports to open. You can also specify a port forwarding rule
by defining the type of traffic (TCP or UDP) and the range of incoming and
outgoing ports to open when enabled.
Configuring Basic Firewall Settings
To configure basic firewall settings:
STEP 1 Choose Firewall > Basic Settings.
STEP 2 Configure the following firewall settings:
DoS Protection Check Enable to enable Denial of Service (DoS)
protection.
Block WAN Request Check Enable to block ping requests to the CVR100W
from the WAN.
IPv4 Multicast
Passthrough
Check Enable to enable multicast passthrough for
IPv4.
IPv4 Multicast
Immediate Leave
Check Enable to enable IGMP proxy immediate leave.

Cisco CVR100W Specifications

General

Brand	Cisco
Model	CVR100W
Category	Network Router
Language	English