Security > Firewall; Firewall; Security > Vpn Passthrough; Access Restrictions > Internet Access - Cisco LinkSys WRT54G2 User Manual

Chapter 3
Security > Firewall
The Security > Firewall screen is used to configure a firewall
that can filter out various types of unwanted traffic on the
Router's local network.
Security > Firewall

Firewall

Firewall Protection
To use firewall protection, keep the
default selection, Enable. To turn off firewall protection,
select Disable.
Block WAN Requests
Block Anonymous Internet Requests
makes it more difficult for outside users to work their
way into your network. This feature is selected by default.
Deselect the feature to allow anonymous Internet
requests.
Filter Multicast
Multicasting
transmissions to specific recipients at the same time. If
multicasting is permitted, then the Router will allow IP
multicast packets to be forwarded to the appropriate
computers. This feature is selected by default. Deselect
this feature to disable it.
Filter Internet NAT Redirection
port forwarding to block access to local servers from
local networked computers. Select Filter Internet NAT
Redirection to filter Internet NAT redirection. This feature
is not selected by default.
Filter IDENT (Port 113) This feature keeps port 113 from
being scanned by devices outside of your local network.
This feature is selected by default. Deselect this feature to
disable it.
Click Save Settings to apply your changes, or click Cancel
Changes to cancel your changes.
Wireless-G Broadband Router
This feature
allows for multiple
This feature uses
Advanced Configuration
Security > VPN Passthrough
The Security > VPN Passthrough screen allows you to enable
VPN tunnels using IPSec, PPTP, or L2TP protocols to pass
through the Router's firewall.
Security > VPN Passthrough
VPN Passthrough
IPSec Passthrough Internet Protocol Security (IPSec) is
a suite of protocols used to implement secure exchange
of packets at the IP layer. To allow IPSec tunnels to pass
through the Router, keep the default, Enable.
PPTP Passthrough Point-to-Point Tunneling Protocol
(PPTP) allows the Point-to-Point Protocol (PPP) to be
tunneled through an IP network. To allow PPTP tunnels to
pass through the Router, keep the default, Enable.
L2TP Passthrough Layer 2 Tunneling Protocol is the
method used to enable Point-to-Point sessions via the
Internet on the Layer 2 level. To allow L2TP tunnels to pass
through the Router, keep the default, Enable.
Click Save Settings to apply your changes, or click Cancel
Changes to cancel your changes.
Access Restrictions > Internet Access
The Access Restrictions > Internet Access screen allows you
to block or allow specific kinds of Internet usage and
traffic, such as Internet access, designated services, and
websites during specific days and times.
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