Linksys EA6900 4A Manual De Propietario

Setting Up: Advanced

Linksys EA-Series

Why would I need to change my security settings? By default, the firewall 

settings in your router have been optimized for most home environments, so 

no changes are needed. The SPI (Stateful Packet Inspection) firewall is enabled 

by default. In addition, anonymous Internet requests and IDENT requests are 

filtered by default. All web filters are disabled, because enabling them may 

cause problems for sites that depend on ActiveX controls, Java, or cookies.

To change your firewall settings:
1.  Log into Linksys Smart Wi-Fi. (See “How to connect to Linksys Smart Wi-

2.  Under Router Settings, click Security. The Security page opens to the 

Firewall tab.

3.  You can now change the following settings:

For more descriptions of each setting, click Help at the top of the 

screen.

 

•

Firewall: SPI firewall protection—This helps protect your local 

network from Internet threats. This option is enabled by default. 

On some router models, this setting is separated into IPv6 and IPv4 

options so that each can be handled separately.

To help protect your network, you should keep this option enabled.

 

•

 •

IPSec Passthrough – IPSec (Internet Protocol Security) is a suite of 

protocols used to implement secure exchange of packets at the IP 

layer. The VPN clients on the local network can establish an IPSec 

VPN tunnel through the router. This option is enabled by default.

 •

PPTP Passthrough – PPTP (Point-to-Point Tunneling Protocol) 

allows the PPP (Point-to-Point Protocol) to be tunneled through 

an IP network. The VPN clients on the local network can establish 

a PPTP VPN tunnel through the router. This option is enabled by 

default.

 •

L2TP Passthrough – L2TP (Layer 2 Tunneling Protocol) enables 

point-to-point sessions using the Internet on the Layer 2 level. 

The VPN clients on the local network can establish an L2TP VPN 

tunnel through the router. This option is enabled by default.

 

•

 •

Filter anonymous Internet requests—This filter blocks Internet 

requests from unknown sources such as ping requests. This option 

is enabled by default.

 •

Filter multicast—Multicasting allows a single transmission 

to simultaneously reach specific recipients within your local 

network. Select this option to block multicasting. This option is 

disabled by default.

 •

Filter Internet NAT redirection—This filter prevents a local 

computer from using a URL or Internet IP address to access the 

local server. Select this option to enable the filter. This option is 

disabled by default. On some router models, this setting applies 

to IPv4 Internet only.

 •

Filter ident (Port 133)—This filter prevents port 133 from being 

scanned by devices from the Internet. This option is enabled by 

default.

4.  Click Save to save your changes.