Linksys RV016 User Manual download pdf (Page 57)

Chapter 6: Setting up and Configuring the Router

Firewall Tab - General

10/100 16-Port VPN Router

Firewall Tab - General

Using the screens of the Firewall tab, you can configure the Router to block or allow Internet access for specific

internal users. You can also configure the Router to block or allow access to internal servers for specific Internet

users. On the Access Rules screen, you can set up different packet filters for various users located on the internal

network (LAN) or external network (WAN or Internet) based on their IP addresses or their network port numbers.

Firewall. The firewall is enabled by default. If you disable the firewall, then the SPI, DoS, and Block WAN Request

features as well as the Access Rules and Content Filters will also be disabled, and the Remote Management

feature will be enabled.

SPI (Stateful Packet Inspection). The SPI feature is enabled by default. The Router's firewall uses Stateful Packet

Inspection to review the information that passes through the firewall. It will inspect all packets based on the

established connection, prior to passing the packets for processing through a higher protocol layer.

DoS (Denial of Service). The DoS feature is enabled by default. It protects internal networks from Internet attacks,

such as SYN Flooding, Smurf, LAND, Ping of Death, IP Spoofing, and reassembly attacks.

Block WAN Request. This feature is enabled by default and is designed to prevent attacks through the Internet.

When it is enabled, the Router will drop both unaccepted TCP request and ICMP packets from the WAN side.

Hackers will not find the Router by pinging the WAN IP address. If the Router’s DMZ feature is enabled, then the

Block WAN Request feature will be disabled.

Remote Management. The Router supports remote management. This feature is disabled by default. If you want

to manage this Router through a WAN connection, click Enable. Then select the port number you want to use

(port 80 or port 8080 is usually used for remote management).

Multicast Pass Through. IP Multicasting occurs when a single data transmission is sent to multiple recipients at

the same time. This feature is disabled by default. If it is enabled, then the Router allows IP multicast packets to

be forwarded to the appropriate computers.

MTU (Maximum Transmission Unit). This feature specifies the largest packet size permitted for network

transmission. It is recommended that you use the Auto option; however, you may manually set the MTU value. The

default MTU size is 1500 bytes.

Click the Save Settings button to save your changes, or click the Cancel Changes button to undo your changes.

Figure 6-43: General Firewall

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Linksys RV016 User Manual Page 57