User`s manual

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78
802.11n WLAN ADSL2+ Router
IP/Port Filtering
From the left-hand • Services menu, click on Firewall->IP/PortFiltering.
Fieldsontherstsetting
block
Description
Outgoing Default Action Specify the default action on the LAN to WAN
forwarding path.
Incoming Default Action Specify the default action on the WAN to LAN
forwarding path.
Function Button Description
Apply Changes Click to save the setting of default actions to the conguration.
Fields on the second
setting block
Description
Rule Action Deny or allow trafc when matching this rule.
Direction Trafc forwarding direction.
Protocol There are 3 options available: TCP, UDP and ICMP.
Source IP Address The source IP address assigned to the trafc on which
ltering is applied.
Source Subnet Mask Subnet-mask of the source IP.
Source Port Starting and ending source port numbers.
Destination IP Address The destination IP address assigned to the trafc on
which ltering is applied.
Destination Subnet Mask Subnet-mask of the destination IP.
Destination Port Starting and ending destination port numbers.
Function Button Description
Apply Changes Click to save the rule entry to the conguration.