Linksys WAG325N manual Security Firewall, Security VPN Passthrough

Chapter 3

Advanced Configuration

reduction of the default value is recommended. In most cases, it should remain at its default value of 2346.

RTS Threshold  Should you encounter inconsistent data flow, only minor reduction of the default, 2346, is recommended. If a network packet is smaller than the preset RTS threshold size, the RTS/CTS mechanism will not be enabled. The Gateway sends Request to Send (RTS) frames to a particular receiving station and negotiates the sending of a data frame. After receiving an RTS, the wireless station responds with a Clear to Send (CTS) frame to acknowledge the right to begin transmission. The RTS Threshold value should remain at its default value of 2346.

Click Save Settings to apply your changes, or click Cancel Changes to cancel your changes.

Security > Firewall

The Firewall screen is used to configure a firewall that can filter out various types of unwanted traffic on the Gateway’s local network.

Security > Firewall

Firewall

SPI Firewall Protection  To use firewall protection, keep the default selection, Enable. To turn off firewall protection, select Disable.

Filters

Filter Proxy  Use of WAN proxy servers may compromise the Gateway’s security. Denying Proxy will disable access to any WAN proxy servers. Select Filter Proxy to enable proxy filtering. Deselect the feature to allow proxy access.

Filter Java Applets  Java is a programming language for websites. If you deny Java, you run the risk of not having access to Internet sites created using this programming language. Select Filter Java Applets to enable Java filtering. Deselect the feature to allow Java usage.

Filter Cookies  A cookie is data stored on your computer and used by Internet sites when you interact with them. Select Filter Cookies to filter cookies. Deselect the feature to allow cookie usage.

Filter ActiveX  ActiveX is a programming language for websites. If you deny ActiveX, you run the risk of not having access to Internet sites created using this programming language. Select Filter ActiveX to enable ActiveX filtering. Deselect the feature to allow ActiveX usage.

Block WAN Requests

Block Anonymous Internet Requests  This feature 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.

Click Save Settings to apply your changes, or click Cancel Changes to cancel your changes.

Security > VPN Passthrough

The VPN Passthrough screen allows you to enable VPN tunnels using IPSec, PPTP, or L2TP protocols to pass through the Gateway’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 Gateway, 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 Gateway, 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 Gateway, keep the default, Enable.

Click Save Settings to apply your changes, or click Cancel Changes to cancel your changes.

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