Bedienungsanleitung Linksys wrt320n (Seite 19 von 54) (Englisch, Holländisch)

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Chapter 3

Advanced Configuration

Dual-Band Wireless-N Gigabit Router

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 synchronise 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 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 a 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.

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

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