LINKSYS WRT54G2V1 Wireless-G Broadband Router User Manual Manual Part 4

LINKSYS LLC Wireless-G Broadband Router Manual Part 4

Manual Part 4

Chapter 3 Advanced Configuration12Wireless-G Broadband RouterPassphrase Enter a Passphrase to automatically generate WEP keys. Then click Generate.Key 1-4 If you did not enter a Passphrase, enter the WEP key(s) manually.WEPWEP is a basic encryption method, which is not as secure as WPA. Security Mode > WEPDefault Transmit Key Select a Default Transmit Key (choose which Key to use). The default is 1.WEP Encryption Select a level of WEP encryption, 64 bits 10 hex digits or 128 bits 26 hex digits. The default is 64 bits 10 hex digits.Passphrase Enter a Passphrase to automatically generate WEP keys. Then click Generate.Key 1-4 If you did not enter a Passphrase, enter the WEP key(s) manually.Click Save Settings to apply your changes, or click Cancel Changes to cancel your changes.Wireless > Wireless MAC FilterWireless access can be filtered by using the MAC addresses of the wireless devices transmitting within your network’s radius. Wireless > Wireless MAC FilterWireless MAC FilterWireless MAC Filter To filter wireless users by MAC Address, either permitting or blocking access, click Enable. If you do not wish to filter users by MAC Address, keep the default setting, Disable.Prevent Select this to block wireless access by MAC Address. This button is selected by default.Permit Only Select this to allow wireless access by MAC Address. This button is not selected by default.Edit MAC Filter List Click this to open the MAC Address Filter List screen. On this screen, you can list users, by MAC Address, to whom you wish to provide or block access. For easy reference, click Wireless Client MAC List to display a list of network users by MAC Address.MAC Address Filter ListClick Save Settings to apply your changes, or click Cancel Changes to cancel your changes.Wireless > Advanced Wireless SettingsThis Wireless > Advanced Wireless Settings screen is used to set up the Router’s advanced wireless functions. These settings should only be adjusted by an expert administrator as incorrect settings can reduce wireless performance.
Chapter 3 Advanced Configuration13Wireless-G Broadband Router Wireless > Advanced Wireless SettingsAdvanced WirelessAuthentication Type The default is set to Auto, which allows either Open System or Shared Key authentication to be used. With Open System authentication, the sender and the recipient do NOT use a WEP key for authentication. With Shared Key authentication, the sender and recipient use a WEP key for authentication.Basic Rate The Basic Rate setting is not actually one rate of transmission but a series of rates at which the Router can transmit. The Router will advertise its Basic Rate to the other wireless devices in your network, so they know which rates will be used. The Router will also advertise that it will automatically select the best rate for transmission. The default setting is Default, when the Router can transmit at all standard wireless rates (1-2Mbps, 5.5Mbps, 11Mbps, 18Mbps, and 24Mbps). Other options are 1-2Mbps, for use with older wireless technology, and All, when the Router can transmit at all wireless rates. The Basic Rate is not the actual rate of data transmission. If you want to specify the Router’s rate of data transmission, configure the Transmission Rate setting.Transmission Rate The rate of data transmission should be set depending on the speed of your wireless network. You can select from a range of transmission speeds, or you can select Auto to have the Router automatically use the fastest possible data rate and enable the Auto-Fallback feature. Auto-Fallback will negotiate the best possible connection speed between the Router and a wireless client. The default value is Auto.CTS Protection Mode CTS (Clear-To-Send) Protection Mode should remain disabled unless you are having severe problems with your Wireless-G products not being able to transmit to the Router in an environment with heavy 802.11b traffic. This function boosts the Router’s ability to catch all Wireless-G transmissions but will severely decrease performance.Frame Burst Enabling this option should provide your network with greater performance, depending on the manufacturer of your wireless products. To turn on the Frame Burst option, select Enable. The default is Disable.Beacon Interval The default value is 100. Enter a value between 1 and 65,535 milliseconds. The Beacon Interval value indicates the frequency interval of the beacon. A beacon is a packet broadcast by the Router to synchronize the wireless network.DTIM Interval This value, between 1 and 255, indicates the interval of the Delivery Traffic Indication Message (DTIM). A DTIM field is a countdown field informing clients of the next window for listening to broadcast and multicast messages. When the Router has buffered broadcast or multicast messages for associated clients, it sends the next DTIM with a DTIM Interval value. Its clients hear the beacons and awaken to receive the broadcast and multicast messages. The default value is 1.Fragmentation Threshold This value specifies the maximum size for a packet before data is fragmented into multiple packets. If you experience a high packet error rate, you may slightly increase the Fragmentation Threshold. Setting the Fragmentation Threshold too low may result in poor network performance. Only minor 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 value, 2347, is recommended. If a network packet is smaller than the preset RTS threshold size, the RTS/CTS mechanism will not be enabled. The Router 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 2347.AP Isolation This isolates all wireless clients and wireless devices on your network from each other. Wireless devices will be able to communicate with the Router but not with each other. To use this function, select On. AP Isolation is turned Off by default. SecureEasySetup This feature allows you to enable or disable the SecureEasySetup feature. Select Disabled to disable the feature and turn off the button’s light. The feature is Enabled by default.Click Save Settings to apply your changes, or click Cancel Changes to cancel your changes.
Chapter 3 Advanced Configuration14Wireless-G Broadband RouterSecurity > FirewallThe Security > Firewall screen is used to configure a firewall that can filter out various types of unwanted traffic on the Router’s local network.Security > FirewallFirewallFirewall Protection To use firewall protection, keep the default selection, Enable. To turn off firewall protection, select Disable.Block WAN RequestsBlock 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.Filter Multicast Multicasting allows for multiple transmissions to specific recipients at the same time. If multicasting is permitted, then the Router will allow IP multicast packets to be forwarded to the appropriate computers. This feature is selected by default. Deselect this feature to disable it.Filter Internet NAT Redirection This feature uses port forwarding to block access to local servers from local networked computers. Select Filter Internet NAT Redirection to filter Internet NAT redirection. This feature is not selected by default.Filter IDENT (Port 113) This feature keeps port 113 from being scanned by devices outside of your local network. This feature is selected by default. Deselect this feature to disable it.Click Save Settings to apply your changes, or click Cancel Changes to cancel your changes.Security > VPN PassthroughThe Security > VPN Passthrough screen allows you to enable VPN tunnels using IPSec, PPTP, or L2TP protocols to pass through the Router’s firewall. Security > VPN PassthroughVPN PassthroughIPSec 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, 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 Router, 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 Router, keep the default, Enable.Click Save Settings to apply your changes, or click Cancel Changes to cancel your changes.Access Restrictions > Internet AccessThe Access Restrictions > Internet Access screen allows you to block or allow specific kinds of Internet usage and traffic, such as Internet access, designated services, and websites during specific days and times.
Chapter 3 Advanced Configuration15Wireless-G Broadband RouterAccess Restrictions > Internet AccessInternet AccessInternet Access Policy Access can be managed by a policy. Use the settings on this screen to establish an access policy (after Save Settings 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 Delete. To view all the policies, click Summary. (Policies can be deleted from the Summary screen by selecting the policy or policies and clicking Delete. To return to the Internet Access tab, click Close.)Internet Policy SummaryStatus Policies are disabled by default. To enable a policy, select the policy number from the drop-down menu, and select Enable.To create an Internet Access policy:Select a number from the Internet Access Policy drop-down menu.To enable this policy, select Enable.Enter a Policy Name in the field provided. Click Edit List of PCs to select which PCs will be affected by the policy. The List of PCs screen appears. You can 1.2.3.4.select a PC by MAC Address or IP Address. You can also enter a range of IP Addresses if you want this policy to affect a group of PCs. After making your changes, click Save Settings to apply your changes or Cancel Changes to cancel your changes. Then click Close. List of PCsSelect the appropriate option, Deny or Allow, depending on whether you want to block or allow Internet access for the PCs you listed on the List of PCs screen.Decide which days and what times you want this policy to be enforced. Select the individual days during which the policy will be in effect, or select Everyday. Then enter a range of hours and minutes during which the policy will be in effect, or select 24 Hours.Select any Blocked Services or Website Blocking you wish to use.Click Save Settings to save the policy’s settings, or click Cancel Changes to cancel the policy’s settings.Blocked ServicesYou can filter access to various services accessed over the Internet, such as FTP or telnet, by selecting services from the drop-down menus next to Blocked Services. (You can block up to 20 services.) Then enter the range of ports you want to filter.If the service you want to block is not listed or you want to edit a service’s settings, then click Add/Edit Service. Then the Port Services screen will appear.Port ServicesTo add a service, enter the service’s name in the Service Name field. Select its protocol from the Protocol drop-down menu, and enter its range in the Port Range fields. Then click Add.5.6.7.8.

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