TD851W
150Mbps Wireless N ADSL2+ Modem Router User Guide
)
Note:
After configuration, you need to click the
Save
button appeared on the left panel so that your
configuration can still take effect after the Router reboots.
4.5.2 IP/Port Filter
Choose “
Firewall
→
IP/Port Filter
” menu, and you will see the next screen (shown in Figure 4-44).
Here you can set the IP/Port filter rules to secure or restrict your local network.
Figure 4-44
¾
SPI Firewall:
Choose to enable or disable the SPI firewall.
¾
Rule Action:
The filter mode of this entry, it can be “Permit” and “Deny”. If the mode is
“Permit”, the IP connection matches the rule will be permitted; if the mode is “Deny”, the IP
connection matches the rule will be denied.
¾
Protocol:
The protocol of this entry, it can be “IP”, “ICMP”, “TCP” and “UDP”.
¾
Direction:
The direction of this entry, it can be “upstream” and “Downstream”.
¾
Source IP Address / Mask Address:
The source IP address and mask address of the entry.
¾
Dest IP Address / Mask Address:
The destination IP address and mask address of the
entry.
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