Security > Filter - Linksys EtherFast BEFSR41 User Manual

Chapter 2
Security > Filter
The Filter screen is used to set up filters to block specific
internal users from accessing the Internet and enhance
your network's security .
Security > Filter
Filter IP Address Range
You can create up to five different IP Address Range filters .
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 .
Start Enter the starting IP address of the range you wish
to filter .
End
Enter the ending IP address of the range you wish
to filter .
Filter Port Range
You can create up to five different Port Range filters . Users
connected to the Router will no longer be able to access
any port number listed here .
Protocol Select the protocol you want to filter, TCP, UDP,
or Both .
Start
Enter the starting port number of the range you
wish to filter .
End Enter the ending port number of the range you wish
to filter .
EtherFast Cable/DSL Router with 4-Port Switch
Advanced Configuration
Filter MAC Address
This feature blocks computers with specific MAC addresses
from going out to the Internet .
Edit MAC Filter Setting To set the MAC filter, click Edit
MAC Filter Setting .
Filter > MAC Access Control Table
Use the MAC Access Control Table to select the MAC
addresses you want to filter .
Filtered MAC Address
•
address entries .
mac 1-10 Enter the MAC address .
•
Click Apply before closing the window . To cancel
changes, click Undo .
Block WAN Requests
Use these features to enhance your network's security and
filter multicasting .
Block Anonymous Internet Requests
makes it more difficult for outside users to work their
way into your network . This feature is enabled by default .
Select Disabled to allow anonymous Internet requests .
Filter Multicast
Multicasting
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 Enabled to filter multicasting . This
feature is disabled by default .
Filter Internet NAT Redirection
forwarding to block access to local servers from local
networked computers . Select Enabled to filter Internet
NAT redirection . This feature is disabled by default .
Filter IDENT (Port 113)
This feature keeps port 113 from
being scanned by devices outside of your local network .
This feature is enabled by default . Select Disabled to allow
port 113 to be scanned .
Select the range of MAC
This feature
allows for multiple
This feature uses port
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