Linksys WRT310N-ES Router Manual PDF (Setup & Configuration Guide)

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Chapter 3

Advanced Configuration

Wireless-N Gigabit Router

for Remote Authentication Dial-In User Service.) These

six are briefly discussed here. For detailed instructions

on configuring wireless security for the Router, refer to

“Chapter 2: Wireless Security.”

Wireless Security

Security Mode

Select the security method for your wireless network. If

you do not want to use wireless security, keep the default,

Disabled

WPA Personal

NOTE:

If you are using WPA, always remember

that each device in your wireless network MUST

use the same WPA method and shared key, or

else the network will not function properly.

Security Mode > WPA Personal

Passphrase

Enter a Passphrase of 8-63 characters.

Key Renewal

Enter a Key Renewal period, which instructs

the Router how often it should change the encryption keys.

The default Group Key Renewal period is

3600

seconds.

WPA2 Personal

Security Mode > WPA2 Personal

Encryption

WPA2 supports two encryption methods,

TKIP and AES, with dynamic encryption keys. Select the

type of algorithm,

AES

TKIP or AES

. The default is

TKIP

or AES

Passphrase

Enter a Passphrase of 8-63 characters.

Key Renewal

Enter a Key Renewal period, which instructs

the Router how often it should change the encryption keys.

The default Group Key Renewal period is

3600

seconds.

WPA Enterprise

This option features WPA used in coordination with a

RADIUS server. (This should only be used when a RADIUS

server is connected to the Router.)

Security Mode > WPA Enterprise

RADIUS Server

Enter the IP Address of the RADIUS

server.

RADIUS Port

Enter the port number of the RADIUS

server. The default value is

1812

Shared Secret

Enter the key shared between the Router

and the server.

Key Renewal

Enter a Key Renewal period, which instructs

the Router how often it should change the encryption

keys. The default Key Renewal period is

3600

seconds.

WPA2 Enterprise

This option features WPA2 used in coordination with a

RADIUS server. (This should only be used when a RADIUS

server is connected to the Router.)

Security Mode > WPA2 Enterprise

Encryption

WPA2 supports two encryption methods,

TKIP and AES, with dynamic encryption keys. Select the

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Chapter 3

Advanced Configuration

Wireless-N Gigabit Router

type of algorithm,

AES

TKIP or AES

. The default is

TKIP

or AES

RADIUS Server

Enter the IP Address of the RADIUS

server.

RADIUS Port

Enter the port number of the RADIUS

server. The default value is

1812

Shared Secret

Enter the key shared between the Router

and the server.

Key Renewal

Enter a Key Renewal period, which instructs

the Router how often it should change the encryption

keys. The default Key Renewal period is

3600

seconds.

RADIUS

This option features WEP used in coordination with a

RADIUS server. (This should only be used when a RADIUS

server is connected to the Router.)

Security Mode > RADIUS

IMPORTANT:

If you are using WEP encryption,

always remember that each device in your

wireless network MUST use the same WEP

encryption method and encryption key, or else

your wireless network will not function properly.

RADIUS Server

Enter the IP Address of the RADIUS

server.

RADIUS Port

Enter the port number of the RADIUS

server. The default value is

1812

Shared Secret

Enter the key shared between the Router

and the server.

Encryption

Select

level

WEP

encryption,

40/64 bits (10 hex digits)

104/128 bits (26 hex digits)

The default is

40/64 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.

TX Key

Select which TX (Transmit) Key to use. The default

WEP

WEP is a basic encryption method, which is not as secure

as WPA.

Security Mode > WEP

Encryption

Select

level

WEP

encryption,

40/64 bits (10 hex digits)

104/128 bits (26 hex digits)

The default is

40/64 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.

TX Key

Select which TX (Transmit) Key to use. The default

Click

Save Settings

to apply your changes, or click

Cancel

Changes

to cancel your changes.

Wireless > Wireless MAC Filter

Wireless access can be filtered by using the MAC addresses of

the wireless devices transmitting within your network’s radius.

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Chapter 3

Advanced Configuration

Wireless-N Gigabit Router

Wireless > Wireless MAC Filter

Wireless MAC Filter

Enabled/Disabled

To filter wireless users by MAC Address,

either permitting or blocking access, select

Enabled

. If you

do not wish to filter users by MAC Address, keep the default

setting,

Disabled

Access Restriction

Prevent

Select this

to block wireless access by MAC

Address. This button is selected by default.

Permit

Select this to allow wireless access by MAC

Address. This button is not selected by default.

MAC Address Filter List

Wireless Client List

Click this to open the

Wireless Client

List

screen.

Wireless Client List

This screen shows computers and other devices on

the wireless network. The list can be sorted by Client

Name, Interface, IP Address, MAC Address, and Status.

Select

Save to MAC Address Filter List

for any device

you want to add to the MAC Address Filter List. Then

click

Add

To retrieve the most up-to-date information, click

Refresh

. To exit this screen and return to the

Wireless

MAC Filter

screen, click

MAC 01-50

Enter the MAC addresses of the devices

whose wireless access you want to block or allow.

Click

Save Settings

to apply your changes, or click

Cancel

Changes

to cancel your changes.

Wireless > Advanced Wireless Settings

This

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.

Wireless > Advanced Wireless Settings

Advanced Wireless

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

Enabled

. AP

Isolation is disabled by default.

Frame Burst

Enabling this option should provide your

network with greater performance, depending on the

manufacturer of your wireless products. To use this option,

keep the default,

Enabled

. Otherwise, select

Disabled

Authentication 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.

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Chapter 3

Advanced Configuration

Wireless-N Gigabit Router

With Shared Key authentication, the sender and recipient

use a WEP key for authentication. Select

Shared Key

only use Shared Key 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 is

Auto

N Transmission Rate

The rate of data transmission

should be set depending on the speed of your Wireless-N

networking. 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 is

Auto

CTS Protection Mode

The Router will automatically

use CTS (Clear-To-Send) Protection Mode when your

Wireless-N and Wireless-G products are experiencing

severe problems and are not 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-

N and Wireless-G transmissions but will severely decrease

performance. The default is

Auto

Beacon Interval

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. The default value is

100

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

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

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 Router’s

local network.

Security > Firewall

Firewall

SPI Firewall Protection

To use firewall protection,

keep the default selection,

Enabled

. To turn off firewall

protection, select

Disabled

Internet Filter

Filter

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.

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Chapter 3

Advanced Configuration

Wireless-N Gigabit Router

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. Select this feature to filter multicasting. This

feature is not selected by default.

Filter Internet NAT Redirection

This feature uses port

forwarding to block access to local servers from local

networked computers. Select this feature to filter Internet

NAT redirection. It 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.

Web Filter

Proxy

Use of WAN proxy servers may compromise the

Gateway’s security. Denying Proxy will disable access to

any WAN proxy servers. Select this feature to enable proxy

filtering. Deselect the feature to allow proxy access

Java

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

this feature to enable Java filtering. Deselect the feature

to allow Java usage

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 this feature to enable ActiveX filtering. Deselect the

feature to allow ActiveX usage

A cookie is data stored on your computer and

used by Internet sites when you interact with them. Select

this feature to filter cookies. Deselect the feature to allow

cookie usage

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 Router’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 Router, keep the default,

Enabled

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,

Enabled

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,

Enabled

Click

Save Settings

to apply your changes, or click

Cancel

Changes

to cancel your changes.

Access Restrictions > 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, and websites during specific

days and times.

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