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X5668 / X5668U
User’s Guide
31
ALG
A ALG (Application Layer Gateway) is a method to allow specific application to pass
through NAT firewall.
Figure 32: ALG configuration
Global Setting
Check to select
SIP ALG
enabled
Click
Save/Apply
Security
The Security feature provides two more setting pages including MAC filtering and
Parental Control.
IP Address Filter
The device can block the packet in outgoing and incoming directions. By default, all
outgoing IP packets from LAN is allowed to surf Internet, but some IP packets can be
blocked by setting up filters.
Figure 33: Outgoing IP Filter Setup
Click
Add
to add a rule of Outgoing IP Filtering.
Check
Remove
and click
Remove
to remove the specified entry.
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User’s Guide
32
Figure 34: Add - Outgoing IP Filter Setup
Global Setting
Enter the
Filter Name
Select the
Protocol
from the selection list.
Enter the
Source IP Address
and
Subnet Mask (range of IP addresses)
of packet
Enter the
one port or multi ports
(port range)
Enter the
Destination IP Address
and
Subnet Mask (range of IP addresses)
of
packet
Enter the
one port or multi ports
(port range)
Click
Save/Apply
By default, all incoming IP packets from WAN are blocked to access PCs in LAN, but
some IP packets can be accepted by setting up filters.
Figure 35: Incoming IP Filter Setup
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33
Click
Add
to add a rule of Incoming IP Filtering.
Check
Remove
and click
Remove
to remove the specified entry.
Figure 36: Add - Incoming IP Filter Setup
Global Setting
Enter the
Filter Name
Select the
Protocol
from the selection list.
Enter the
Source IP Address
and
Subnet Mask (range of IP addresses)
of packet
Enter the
one port or multi ports
(port range)
Enter the
Destination IP Address
and
Subnet Mask (range of IP addresses)
of
packet
Enter the
one port or multi ports
(port range)
Select the
WAN interfaces
which will be applied with this incoming IP filter rule.
Click
Save/Apply
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User’s Guide
34
MAC Filtering
This feature allows you to configure the filter feature based on MAC address. The
default MAC filtering rule is FORWARDED which means that all MAC layer frames will
be forwarded except those matching with any of the specified rules in the MAC
filtering table. The default MAC filtering rule can be changed to BLOCKED. It means
that all MAC layer frames will be blocked except those matching with any of the
specified rule in the MAC filtering table.
Figure 37: MAC Filtering Configuration
Click
Change Policy
to change the MAC filtering rule between FORWARDED and
BLCOKED.
Figure 38: Change Policy Rule
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User’s Guide
35
Click
Add
to add a rule of MAC filtering.
Check
Remove
and click
Remove
to remove the specified entry
Figure 39: Add MAC Filter Rule
Global Setting
Select the
Protocol Type
of packet from the list
Enter the
Destination MAC Address
of packet
Enter the
Source MAC Address
of packet
Select the Frame Direction, both LAN to WAN and WAN to LAN, LAN to WAN
(outgoing) or WAN to LAN (incoming) from the list
Select the
WAN interfaces
which will be applied with this MAC filtering rule.
Click Save/Apply to save the configuration
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