The Security Tab - Vpn Passthrough; The Access Restrictions Tab - Internet Access; Figure 8-31: Security Tab - Vpn Passthrough; Figure 8-32: Access Restrictions Tab - Internet Access - Linksys WRT54G3G-ST User Manual

Wireless-G Router for Mobile Broadband

The Security Tab - VPN Passthrough

Use this screen to allow VPN tunnels using IPSec, PPTP, or L2TP protocols to pass through the Router's firewall.
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 Router, click Enable. IPSec Passthrough is
enabled by default.

Figure 8-31: Security Tab - VPN Passthrough

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 Router, click Enable. PPTP
Passthrough is enabled by default.
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 Router, click Enable. L2TP Passthrough is
enabled by default.
Change these settings as described here, and click the Save Settings button to apply your changes or Cancel
Changes to cancel your changes.

The Access Restrictions Tab - Internet Access

The Internet Access screen allows you to block or allow specific kinds of Internet usage and traffic, such as
Internet access, designated services, websites, and inbound traffic during specific days and times.
Internet Access
Internet Access Policy. Access can be managed by a policy. Use the settings on this screen to establish an
access policy (after the Save Settings button is clicked). Selecting a policy from the drop-down menu will
display that policy's settings. To delete a policy, select that policy's number and click the Delete button. To view
all the policies, click the Summary button. (Policies can be deleted from the Summary screen by selecting the
policy or policies and clicking the Delete button. To return to the Internet Access tab, click the Close button.)
Status. Policies are disabled by default. To enable a policy, select the policy number from the drop-down menu,
and click the radio button beside Enable.
To create an Internet Access policy:
1. Select a number from the Internet Access Policy drop-down menu.

Figure 8-32: Access Restrictions Tab - Internet Access

Chapter 8: Configuring the Wireless-G Router for Mobile Broadband 71
The Security Tab - VPN Passthrough