D-Link DSL-2750U User Manual page 54

Appendix A – Troubleshooting
Now default policy is BLOCK, it means all incoming IP traffic from WAN is
blocked, but some IP traffic can be accepted by setting up filters.
If you are setting up the incoming IP filtering, click the Add button.
Enter the information in the section. Explanations of parameters are
described below. Click the Apply / Save button to add the entry in the
Active Inbound IP Filtering table.
Filters Parameter
Filter Name Enter a name for the new filter.
IP Version Ipv4/Ipv6
Protocol Select the transport protocol (Any, TCP/UDP, TCP, UDP or ICMP) that will be used for the filter rule.
Source IP Enter the start IP address which you are creating the filter rule.
address[/prefix
length]
Source Port (port or The Source Port is the TCP/UDP port on either the LAN or WAN depending on if you are configuring an Outbound or
port:port) Inbound Filter rule.
D-Link DSL-2750U User Manual
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