DSL-2740E User Manual
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to cyber attacks from the Internet. In these cases, you can limit that exposure by
specifying the IP addresses of Internet hosts that you trust to access your LAN
through the ports that you have opened.
Choose Advanced > Filtering Options > IP/Port Filter. The IP/Port Filtering
page shown in the following figure appears.
Direction Upstream (Downstream) means packets outgoing (incoming) from (to)
router. The Source IP addresses are LAN-side (WAN-side) addresses and the
Destination IP addresses are WAN-side (LAN-side) addresses. Select the rule
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