By default, all incoming IP traffic from the Internet is allowed. The Inbound Filter allows you to create a filter rule to filter incoming IP traffic by
specifying a filter name and at least one condition. All of the specified conditions in this filter rule must be satisfied for the rule to take effect.
ADD INBOUND IP FILTER
Type the filter name in the Filter Name field.
Choose ICMP, TCP/UDP, TCP, or UDP in Protocol.
Type the Source IP address, Source Subnet Mask,
and Source Port.
Type the Destination IP address, Destination Subnet Mask,
and Destination port.
Please click Add/Apply to add the filter to the list.