ip filters block specific internal users from accessing the internet and enable vpn (virtual private network) tunnels. you can set up filters by using ip addresses or network port numbers (or a range of ports).

    setting up filters

    . to set up a filter using ip addresses, enter the range of ip addresses you wish to filter into the ip address fields. users who have filtered ip addresses will not be able to access the internet at all. if you only want to filter one ip address instead of a range of ip addresses, enter the same value into both fields. for instance, if you wish to filter the pc with the ip address of 192.168.1.5, enter 5 into both fields on one line: 192.168.1.5 ~ 192.168.1.5. click the apply button and continue button when you're done.

    . to filter users by network port number, enter a network port number or a range of network ports. enter the port numbers you want to filter into the port numbers fields. users connected to the router will no longer be able to access any port number listed there.

    editing mac filter setting

    . this feature filters the network adapter's specific mac address from going out to the internet.

    . to check your network adapter's mac address, run winipcfg or ipconfig in the command prompt. to set the mac filter, click the edit mac filter setting button. when a second window appears, select the range in the drop-down box, and at the mac number prompt, enter the 12-digit mac address you want to filter. click the apply button, followed by the continue button, and then close the window.

    spi (stateful packet inspection)

    . this feature checks the state of a packet to verify that the destination ip address matches the source ip of the original request. to use the firewall, select enable; otherwise, select disable to use the nat firewall.

    blocking wan requests

    . by enabling the block wan request feature, you can prevent your network from being "pinged," or detected, by other internet users. the block wan request feature also reinforces your network security by hiding your network ports. both functions of the block wan request feature make it more difficult for outside users to work their way into your network.

    . click the apply button and then the continue button to save your changes.

    using multicast pass through

    . this feature allows for multiple transmissions to specific recipients at the same time. select enable to support the feature, or disable to keep the router from multicasting.

    instant broadband. series

    using ipsec pass through

    . this feature lets you use ipsec pass through. to use this feature, select enable next to ipsec pass through, and then click the apply button and continue button.

    . to disable ipsec pass through, select disable, and then click the apply button and continue button.

    using pptp pass through

    . point-to-point tunneling protocol is the method used to enable vpn (virtual private networking) tunnels. to enable this feature, click on enable next to pptp pass through, and then click apply and continue button.

    . to disable this feature, select disable next to pptp pass through, and then click the apply button and continue button.

    using remote management

    . this feature allows you to manage your router from a remote location, via the internet. to enable this feature, select enable, and then click the apply button and continue button.

    . to disable remote management, select disable, and then click the apply button and continue button. if you wish to use this feature on the browser, enter http://[wan ip address]:8080.

    using remote upgrade

    . this feature allows you to "flash," or upgrade, your router's firmware from a remote location. to enable remote upgrade, select enable, and then click the apply button and continue button.

    using mtu (maximum transmission unit)

    . this feature specifies the largest packet size permitted for network transmission. select enable and enter the value desired. it is recommended that you leave this value at the 1200 to 1500 range. for most dsl users, it is recommended to use 1492. by default, mtu is set at 1500 when disabled.