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.

Setting Up: Advanced

•• 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.

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Linksys EA6900 manual How to improve security using the built-in firewall, Changing firewall settings, VPN Passthrough
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EA6900 specifications

The Linksys EA6900 is a dual-band wireless router that stands out for its impressive performance and advanced features tailored to meet the demands of modern households. Designed to deliver reliable connectivity for multiple devices simultaneously, it supports the latest Wi-Fi 5 (802.11ac) technology, enabling faster speeds and improved coverage compared to older routers.

One of the main features of the EA6900 is its dual-band capability, which operates on both 2.4 GHz and 5 GHz frequency bands. This allows users to connect to the less congested 5 GHz band for activities that require higher bandwidth, such as streaming HD video or online gaming, while still having the 2.4 GHz band available for basic activities like browsing and email.

The router provides a maximum throughput of up to 1900 Mbps, making it suitable for bandwidth-intensive applications. The beamforming technology further enhances the signal strength and reliability by focusing the wireless signal directly toward connected devices rather than broadcasting it in all directions. This results in better performance and coverage throughout the home, eliminating dead zones and improving connectivity in challenging locations.

The Linksys EA6900 also features four Gigabit Ethernet ports, allowing wired connections for devices such as gaming consoles, PCs, and smart TVs, which benefit from stable and high-speed connections. Additionally, it comes equipped with a USB 3.0 port for sharing files and media across the network, allowing users to connect external storage devices for easy access to data.

Another key characteristic of the EA6900 is its user-friendly interface, facilitated by the Linksys Smart Wi-Fi app. This application allows users to manage their network settings remotely, including monitoring connected devices, setting parental controls, and prioritizing bandwidth for specific applications or devices.

Security is a top priority for the Linksys EA6900, featuring WPA2 encryption and a built-in firewall to protect the network from unauthorized access and threats. The router also supports IPv6, ensuring compatibility with the latest internet protocols.

In summary, the Linksys EA6900 is a robust and versatile router that combines advanced technology with user-friendly features, making it an excellent choice for households with multiple devices requiring reliable connectivity. With its dual-band capability, impressive speed, and enhanced security measures, it provides users with the performance they need for today’s connected lifestyle.
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