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FTP (OutGoing/Ingoing)::
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DNS (OutGoing/Ingoing):
3.6.3.4.2 MAC address Filtering
MAC filtering function enables you to configure your ADSL Firewall Router to block internal
user (
MAC address
) from Internet access.
If you check
Enable,
remember to choosea defaulkt rules policy between
Forward
or
Drop
.
If you select
Forward
, the packet with the MAC address in the table(
Drop
) will be dropped
and others will be forwarded. If you select
Drop
, the packet with the MAC address in the
table (
Forward
) will be forwarded and others will be dropped. Then select
Apply
button to
save the setting.
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•
Active:
Select
Yes
from the drop down list box to enable MAC address filtering.
•
Action When Matched:
Select “Drop” or “Forward”.
•
Log:
Choose “Yes” if you wish to generate logs when the filer rule is applied to a
packet.
•
MAC Address:
Enter the MAC addresses you wish to manage.
3.6.3.4.3 Intrusion Detection
The router’s Intrusion Detection System (IDS) is used to detect hacker attacks and intrusion
attempts from the Internet. If the IDS function of the firewall is enabled, inbound packets are
filtered and blocked depending on whether they are detected as possible hacker attacks,
intrusion attempts or other connections that the router determines to be suspicious.
Hacker attack types recognized by the IDS:
•
IP Spoofing
•
Ping of Death (Length > 65535)
•
Land Attack (Same source / destination IP address)
•
IP with zero length
•
Sync flooding
•
Smurf Attack (ICMP Echo with x.x.x.0 or x.x.x.255)
•
Snork Attack
•
UDP port loop-back
•
TCP NULL scan
•
Intrusion Detection:
Check “Enable” if you wish to detect intruders accessing your
computer without permission.
•
Alert Mail:
Select this check box to use Alert Mail.
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•
Alert Mail Time:
Set the time for receiving Alert mail.
•
Your E-Mail:
Set your email address.
•
Recipient’s E-mail:
Set the Recipient’s email address to which
the E-<mail
notification is sent.
•
SMTP server:
Set the SMTP (mail) server address.
3.6.3.4.4 Block Wan Request
The “
Block WAN Request
” is a stand-alone function and not relate to whether security
enable or disable. Mostly it is for preventing any scan tools from WAN site by hacker.
3.6.3.4.5 URL Blocking
URL filter rules allow you to prevent users on your network from accessing particular
websites by their URL. There are no predefined URL filter rules; you can add filter rules to
meet your requirements.
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From/To:
IP Address
Block Mode:
You can select when Router have yo use thess settings
Keywords Filtering:
Allows blocking by specific keywords within a particular URL rather than having to
specify a complete URL (e.g. to block any image called “advertisement.gif”).
When enabled, your specified keywords list will be checked to see if any keywords are
present in URLs accessed to determine if the connection attempt should be blocked.
Please note that the URL filter blocks web browser (HTTP) connection attempts using
port 80 only.
For example, if the URL is http://www.atlantis-land.com/start.html, it will be dropped as
the keyword “start” occurs in the URL.
Domains Filtering:
This function checks the domain name in URLs accessed against your list of domains to
block or allow. If it is matched, the URL request will be sent (Trusted) or dropped
(Forbidden). The checking procedure is:
1. Check the domain in the URL to determine if it is in the trusted list. If yes, the
connection attempt is sent to the remote web server.
2. If not, check if it is listed in the forbidden list, and if present then the connection
attempt is dropped..
3. If the packet does not match either of the above two items, it is sent to the remote
web server.
4. Please be note that the domain only should be specified, not the full URL. For
example to block traffic to www.sex.com, enter “sex” or “sex.com” instead of
“www.sex.com”. In the example below, the URL request for www.helloworld.com.tw will
be sent to the remote web server because it is listed in the trusted list, whilst the URL
request for www.sex or www.sex.com will be dropped, because helloworld.com is in
the forbidden list.

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