User's Manual
Table Of Contents
- Product Overview
- Setting Up: Basics
- How to create a home network
- Where to find more help
- How to install your router
- How to configure your router
- How to test your Internet connection speed
- How to connect devices to your network
- How to set up parental controls
- How to configure your guest network
- How to back up your router configuration
- How to customize Linksys Smart Wi-Fi
- Using an External Drive
- Setting Up: Advanced
- How to manually set up your router
- How to associate a router with your Linksys Smart Wi-Fi account
- How to get the most out of your dual-band router
- How to control access to your network
- How to set up the DHCP server on your router
- How to access your network on the Internet
- How to clone a MAC address
- How to connect to your corporate office using a VPN
- How to optimize your router for gaming and voice
- How to enable Voice over IP on your network
- How to configure UPnP
- How to use a router as an access point
- How to put your new router behind an existing router
- How to expose a device to the Internet
- Port Forwarding and Port Triggering
- Maintaining and Monitoring
- Troubleshooting
- Specifications
29
Setting Up: Advanced
Linksys EA-Series
How to improve security using the built-in firewall
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.
Changing firewall settings
To change your firewall settings:
1.
Log into Linksys Smart Wi-Fi. (See “How to connect to Linksys Smart Wi-
Fi” on page 7.
2.
Under Router Settings, click Security. The Security page opens to the
Firewall tab.
3.
You can now change the following settings:
TIP
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.
CAUTION
To help protect your network, you should keep this option enabled.
• VPN Passthrough:
• 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.
• Internet filters:
• 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.